Artykuły w czasopismach: „Lepton flavored dark matter”

1

Kile, Jennifer, Andrew Kobach i Amarjit Soni. "Lepton-flavored dark matter". Physics Letters B 744 (maj 2015): 330–38. http://dx.doi.org/10.1016/j.physletb.2015.04.005.

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Kitabayashi, Teruyuki. "Primordial Black Holes and Scotogenic dark matter". Journal of Physics: Conference Series 2156, nr 1 (1.12.2021): 012192. http://dx.doi.org/10.1088/1742-6596/2156/1/012192.

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Abstract We study the correlations between the initial density of primordial black holes and the lepton flavor violating μ → eγ process via scotogenic dark matter. The initial density of PBHs may be constrained with the future MEG II experiment.

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Panci, Paolo, Diego Redigolo, Thomas Schwetz i Robert Ziegler. "Axion dark matter from lepton flavor-violating decays". Physics Letters B 841 (czerwiec 2023): 137919. http://dx.doi.org/10.1016/j.physletb.2023.137919.

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Chao, Wei. "Dark matter, LFV and neutrino magnetic moment in the radiative seesaw model with fermion triplet". International Journal of Modern Physics A 30, nr 01 (9.01.2015): 1550007. http://dx.doi.org/10.1142/s0217751x15500074.

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In this paper we work in the framework of a radiative seesaw model with triplet fermion Σ. Due to the Z2 discrete flavor symmetry, the lightest neutral component of Σ is stable and thus can be a dark matter candidate. Its mass can be solely determined by the dark matter relic abundance, which is bout 2.594 TeV. It can still constitute 30% of the dark matter when considering constraints from dark matter indirect detection experiments. The model also predict a dark matter-nucleus scattering cross-section that would be accessible with future dark matter direct detection searches. We further investigate constraints on the parameter space of the model from the lepton-flavor-violating processes and neutrino transition magnetic moments, induced by the Yukawa interaction of the Σ with the left-handed lepton doublets.

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Chiang, Cheng-Wei, i Hiroshi Okada. "A simple model for explaining muon-related anomalies and dark matter". International Journal of Modern Physics A 34, nr 20 (20.07.2019): 1950106. http://dx.doi.org/10.1142/s0217751x19501069.

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We propose a model to explain several muon-related experimental anomalies and the abundance of dark matter. We introduce a vector-like exotic lepton that form an iso-doublet and three right-handed Majorana fermions as an iso-singlet. A real/complex scalar field is added as a dark matter candidate. We impose a global [Formula: see text] symmetry under which fields associated with the SM muon are charged. To stabilize the dark matter, we impose a [Formula: see text] (or [Formula: see text]) symmetry under which the exotic lepton doublet and the real (or complex) scalar field are charged. We find that the model can simultaneously explain the muon anomalous magnetic dipole moment and the dark matter relic density in no conflict with any lepton flavor-violating/conserving observables, with some details depending upon whether the scalar field is real or complex. Besides, we extend the framework to the quark sector in a way similar to the lepton sector, and find that the recent anomalies associated with the [Formula: see text] transition can also be accommodated while satisfying constraints such as the [Formula: see text] decays and neutral meson mixings.

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Gaviria, Alexandra, Robinson Longas i Andrés Rivera. "Lepton dark matter portal in the inert Zee model". International Journal of Modern Physics A 35, nr 31 (10.11.2020): 2050190. http://dx.doi.org/10.1142/s0217751x20501900.

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The inert Zee model is an extension of the Zee model for neutrino masses. This new model explains the dark matter relic abundance, generates a one-loop neutrino masses and forbids tree-level Higgs-mediated flavor changing neutral currents. Although the dark matter phenomenology of the model is similar to that of the inert doublet model, the presence of new vector-like fermions opens the lepton portal as a new dark matter annihilation channel. We study the impact of this new portal in the low-mass regime and show the parameter space allowed by direct and indirect searches of dark matter. Remarkably, the region for [Formula: see text] GeV is recovered for [Formula: see text]. We also show that future experiments like LZ and DARWIN could probe a large region of the parameter space of the model.

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Alam, I. S. "Phenomenology of dark matter and mirror fermions from a left–right mirror model with singlet scalar". Journal of Physics G: Nuclear and Particle Physics 49, nr 2 (22.12.2021): 025002. http://dx.doi.org/10.1088/1361-6471/ac3cfc.

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Abstract We investigate a left–right mirror model with SU(3) c × SU(2)L × SU(2)R × U(1) Y and a discrete Z 2 symmetry, which introduces mirror fields that are copies of the standard model (SM) fields. The mirror fields have the opposite chirality to their SM counterpart fields. We also introduce singlet scalars as dark matter (DM). The new interaction between DM, SM fermions, and mirror fermions can account for DM abundance, charged lepton flavor violation, lepton anomalous magnetic moment, and flavor changing neutral current. We demonstrated that if we choose DM annihilation into muon as the dominant annihilation channel for leptophilic DM, both the observed DM abundance and the observed discrepancy between theory and experiment in the muon anomalous magnetic moment can be explained without contradicting the bound derived from charged lepton flavor violating processes. We briefly discuss how mirror fermions will be produced at the future linear collider, as mirror fermions can interact with neutral gauge bosons in this model. Finally, we discuss the lightest mirror neutrino decay mechanism, which will be highly abundant if stable.

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Hwang, Jae-Kwang. "New fermionic dark matters, extended Standard Model and cosmic rays". Modern Physics Letters A 32, nr 26 (11.08.2017): 1730023. http://dx.doi.org/10.1142/s0217732317300233.

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Three generations of leptons and quarks correspond to the lepton charges (LCs) in this work. Then, the leptons have the electric charges (ECs) and LCs. The quarks have the ECs, LCs and color charges (CCs). Three heavy leptons and three heavy quarks are introduced to make the missing third flavor of EC. Then the three new particles which have the ECs are proposed as the bastons (dark matters) with the rest masses of 26.121 eV/c2, 42.7 GeV/c2 and 1.9 × 10[Formula: see text] eV/c2. These new particles are applied to explain the origins of the astrophysical observations like the ultra-high energy cosmic rays and supernova 1987A anti-neutrino data. It is concluded that the 3.5 keV X-ray peak observed from the cosmic X-ray background spectra is originated not from the pair annihilations of the dark matters but from the X-ray emission of the Q1 baryon atoms which are similar in the atomic structure to the hydrogen atom. The presence of the 3.5 keV cosmic X-ray supports the presence of the Q1 quark with the EC of −4/3. New particles can be indirectly seen from the astrophysical observations like the cosmic ray and cosmic gamma ray. In this work, the systematic quantized charges of EC, LC and CC for the elementary particles are used to consistently explain the decay and reaction schemes of the elementary particles. Also, the strong, weak and dark matter forces are consistently explained.

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Vicente, Avelino. "Anomalies in b→s Transitions and Dark Matter". Advances in High Energy Physics 2018 (24.06.2018): 1–11. http://dx.doi.org/10.1155/2018/3905848.

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Since 2013, the LHCb collaboration has reported on the measurement of several observables associated with b→s transitions, finding various deviations from their predicted values in the Standard Model. These include a set of deviations in branching ratios and angular observables, as well as in the observables RK and RK⁎, specially built to test the possible violation of Lepton Flavor Universality. Even though these tantalizing hints are not conclusive yet, the b→s anomalies have gained considerable attention in the flavor community. Here we review new physics models that address these anomalies and explore their possible connection to the dark matter of the Universe. After discussing some of the ideas introduced in these works and classifying the proposed models, two selected examples are presented in detail in order to illustrate the potential interplay between these two areas of current particle physics.

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10

Chun, Eung Jin. "Lepton-flavor violating signatures in supersymmetric U(1)′ seesaw". International Journal of Modern Physics A 30, nr 15 (26.05.2015): 1530041. http://dx.doi.org/10.1142/s0217751x15300410.

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In a supersymmetric U(1)′ seesaw model, a right-handed sneutrino can be a good thermal dark matter candidate if the extra gaugino [Formula: see text] is light enough to provide an appropriate annihilation cross-section through a t-channel diagram. We first discuss how right thermal relic density of the right-handed sneutrino dark matter can arise and then explore lepton number and flavor violating signatures followed by cascade production of [Formula: see text] from the third generation squarks at the LHC.

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11

Masiero, Antonio, Stefano Profumo, Sudhir K. Vempati i Carlos E. Yaguna. "Lepton Flavor Violation, Neutralino Dark Matter and the Reach of the LHC". Journal of High Energy Physics 2004, nr 03 (22.03.2004): 046. http://dx.doi.org/10.1088/1126-6708/2004/03/046.

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Chuliá, Salvador Centelles, Rahul Srivastava i José W. F. Valle. "CP violation from flavor symmetry in a lepton quarticity dark matter model". Physics Letters B 761 (październik 2016): 431–36. http://dx.doi.org/10.1016/j.physletb.2016.08.028.

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KANG, KYUNGSIK, SIN KYU KANG, C. S. KIM i SUN MYONG KIM. "NEUTRINO OSCILLATIONS AND LEPTON FLAVOR MIXING". Modern Physics Letters A 16, nr 33 (30.10.2001): 2169–75. http://dx.doi.org/10.1142/s0217732301005473.

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In view of the recent announcement on nonzero neutrino mass from Super-Kamiokande experiment, it would be very timely to investigate all the possible scenarios on masses and mixings of light neutrinos. Recently suggested mass matrix texture for the quark CKM mixing, which can be originated from the family permutation symmetry and its suitable breakings, is assumed for the neutrino mass matrix and determined by the four combinations of solar, atmospheric and LSND neutrino data and cosmological hot dark matter bound as input constraints. The charged-lepton mass matrix is assumed to be diagonal so that the neutrino mixing matrix can be identified directly as the lepton flavor mixing matrix and no CP invariance violation originates from the leptonic sector. The results favor hierarchical patterns for the neutrino masses, which follow from the case when the solar-atmospheric data is used.

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14

Carone, Christopher D., Ari Cukierman i Reinard Primulando. "On the cosmic-ray spectra of three-body lepton-flavor-violating dark matter decays". Physics Letters B 704, nr 5 (październik 2011): 541–46. http://dx.doi.org/10.1016/j.physletb.2011.09.086.

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Gautam, Nayana, i Mrinal Kumar Das. "Neutrino mass, leptogenesis and sterile neutrino dark matter in inverse seesaw framework". International Journal of Modern Physics A 36, nr 21 (30.07.2021): 2150146. http://dx.doi.org/10.1142/s0217751x21501463.

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We study [Formula: see text] flavor symmetric inverse seesaw model which has the possibility of simultaneously addressing neutrino phenomenology, dark matter (DM) and baryon asymmetry of the universe (BAU) through leptogenesis. The model is the extension of the standard model by the addition of two (RH) neutrinos and three sterile fermions leading to a keV scale sterile neutrino DM and two pairs of quasi-Dirac states. The CP violating decay of the lightest quasi-Dirac pair present in the model generates lepton asymmetry which then converts to BAU. Thus, this model can provide a simultaneous solution for nonzero neutrino mass, DM content of the universes and the observed baryon asymmetry. The [Formula: see text] flavor symmetry in this model is augmented by additional [Formula: see text] symmetry to constrain the Yukawa Lagrangian. A detailed numerical analysis has been carried out to obtain DM mass, DM-active mixing as well as BAU both for normal hierarchy as well as inverted hierarchy. We try to correlate the two cosmological observables and found a common parameter space satisfying the DM phenomenology and BAU. The parameter space of the model is further constrained from the latest cosmological bounds on the observables.

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FARZAN, Y. "STRATEGIES TO LINK TINY NEUTRINO MASSES WITH HUGE MISSING MASS OF THE UNIVERSE". International Journal of Modern Physics A 26, nr 15 (20.06.2011): 2461–85. http://dx.doi.org/10.1142/s0217751x11053572.

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With the start of the LHC, interest in electroweak scale models for the neutrino mass has grown. In this paper, we review two specific models that simultaneously explain neutrino masses and provide a suitable DM candidate. We discuss the implications of these models for various observations and experiments including the LHC, Lepton Flavor Violating (LFV) rare decays, direct and indirect dark matter searches and kaon decay.

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Boucenna, Sofiane M., Stefano Morisi i José W. F. Valle. "The Low-Scale Approach to Neutrino Masses". Advances in High Energy Physics 2014 (2014): 1–15. http://dx.doi.org/10.1155/2014/831598.

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In this short review we revisit the broad landscape of low-scaleSU(3)c⊗SU(2)L⊗U(1)Ymodels of neutrino mass generation, with view on their phenomenological potential. This includes signatures associated to direct neutrino mass messenger production at the LHC, as well as messenger-induced lepton flavor violation processes. We also briefly comment on the presence of WIMP cold dark matter candidates.

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Moreno, O., E. Moya de Guerra i M. Ramón Medrano. "Warm Dark Matter Sterile Neutrinos in Electron Capture and Beta Decay Spectra". Advances in High Energy Physics 2016 (2016): 1–12. http://dx.doi.org/10.1155/2016/6318102.

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We briefly review the motivation to search for sterile neutrinos in the keV mass scale, as dark matter candidates, and the prospects to find them in beta decay or electron capture spectra, with a global perspective. We describe the fundamentals of the neutrino flavor-mass eigenstate mismatch that opens the possibility of detecting sterile neutrinos in such ordinary nuclear processes. Results are shown and discussed for the effect of heavy neutrino emission in electron capture in Holmium 163 and in two isotopes of Lead, 202 and 205, as well as in the beta decay of Tritium. We study the deexcitation spectrum in the considered cases of electron capture and the charged lepton spectrum in the case of Tritium beta decay. For each of these cases, we define ratios of integrated transition rates over different regions of the spectrum under study and give new results that may guide and facilitate the analysis of possible future measurements, paying particular attention to forbidden transitions in Lead isotopes.

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Valle, José W. F. "Status and implications of neutrino masses: A brief panorama". International Journal of Modern Physics A 30, nr 13 (4.05.2015): 1530034. http://dx.doi.org/10.1142/s0217751x15300343.

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With the historic discovery of the Higgs boson our picture of particle physics would have been complete were it not for the neutrino sector and cosmology. I briefly discuss the role of neutrino masses and mixing upon gauge coupling unification, electroweak breaking and the flavor sector. Time is ripe for new discoveries such as leptonic CP violation, charged lepton flavor violation and neutrinoless double beta decay. Neutrinos could also play a role in elucidating the nature of dark matter and cosmic inflation.

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Ganguly, Sougata, Sourov Roy i Ananya Tapadar. "Secluded dark sector and muon (g-2) in the light of fast expanding Universe". Journal of Cosmology and Astroparticle Physics 2023, nr 02 (1.02.2023): 044. http://dx.doi.org/10.1088/1475-7516/2023/02/044.

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Abstract The lack of information before Big Bang Neucleosynthesis (BBN) allow us to assume the presence of a new species ϕ whose energy density redshifts as a -4+n where n > 0 and a is the scale factor. This non-standard cosmological setup facilitates a larger portal coupling (ϵ) between the dark and the visible sectors even when the two sectors are not in thermal equilibrium. Here, we have considered U(1) Lμ-Lτ ⊗ U(1) X gauge extension of the Standard Model (SM) and studied different phases of the cosmological evolution of a thermally decoupled dark sector such as leak-in, freeze-in, reannihilation, and late-time annihilation in the presence of fast expansion. Due to the tree level kinetic mixing between U(1) X and U(1) Lμ-Lτ gauge bosons, the dark sector couples with the μ and τ flavored leptons of the SM. We show that in our scenario it is possible to reconcile the dark matter relic density and muon (g-2) anomaly. In particular, we show that for 2 × 10-4 ≲ ϵ ≲ 10-3, 5.5 MeV ≲ mZ ' ≲ 200 MeV, n = 4, and 1 TeV ≲ mχ ≲ 10 TeV relic density constraint of dark matter, constraint from muon (g-2) anomaly, and other cosmological, astrophysical constraints are satisfied.

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Centelles Chuliá, Salvador, Rahul Srivastava i José W. F. Valle. "Generalized bottom-tau unification, neutrino oscillations and dark matter: Predictions from a lepton quarticity flavor approach". Physics Letters B 773 (październik 2017): 26–33. http://dx.doi.org/10.1016/j.physletb.2017.07.065.

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SANNINO, FRANCESCO. "LIGHT COMPOSITE HIGGS: LCH @ LHC". International Journal of Modern Physics A 20, nr 27 (30.10.2005): 6133–48. http://dx.doi.org/10.1142/s0217751x05029162.

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Here I summarize some of the salient features of technicolor theories with technifermions in higher dimensional representations of the technicolor gauge group. The expected phase diagram as function of number of flavors and colors for the two index (anti)symmetric representation of the gauge group is reviewed. After having constructed the simplest walking technicolor theory one can show that it is not at odds with the precision measurements. The simplest theory also requires, for consistency, a fourth family of heavy leptons. The latter may result in an interesting signature at LHC. In the case of a fourth family of leptons with ordinary lepton hypercharge the new heavy neutrino can be a natural candidate of cold dark matter. New theories will also be proposed in which the critical number of flavors needed to enter the conformal window is higher than in the one with fermions in the two-index symmetric representation, but lower than in the walking technicolor theories with fermions only in the fundamental representation of the gauge group. Due to the near conformal/chiral phase transition the composite Higgs is very light compared to the intrinsic scale of the technicolor theory. For the two technicolor theory the composite Higgs mass is predicted not to exceed 150 GeV.

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23

Zhang, Xinyi, i Shun Zhou. "Inverse seesaw model with a modular S ₄ symmetry: lepton flavor mixing and warm dark matter". Journal of Cosmology and Astroparticle Physics 2021, nr 09 (1.09.2021): 043. http://dx.doi.org/10.1088/1475-7516/2021/09/043.

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Nomura, Takaaki, i Hiroshi Okada. "A model with isospin doublet U(1)D gauge symmetry". International Journal of Modern Physics A 33, nr 14n15 (28.05.2018): 1850089. http://dx.doi.org/10.1142/s0217751x18500896.

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We propose a model with an extra isospin doublet [Formula: see text] gauge symmetry, in which we introduce several extra fermions with odd parity under a discrete [Formula: see text] symmetry in order to cancel the gauge anomalies out. A remarkable issue is that we impose nonzero [Formula: see text] charge to the Standard Model Higgs, and it gives the most stringent constraint to the vacuum expectation value of a scalar field breaking the [Formula: see text] symmetry that is severer than the LEP bound. We then explore relic density of a Majorana dark matter candidate without conflict of constraints from lepton flavor violating processes. A global analysis is carried out to search for parameters which can accommodate with the observed data.

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Kashav, Monal, i Surender Verma. "On minimal realization of topological Lorentz structures with one-loop seesaw extensions in A₄ modular symmetry". Journal of Cosmology and Astroparticle Physics 2023, nr 03 (1.03.2023): 010. http://dx.doi.org/10.1088/1475-7516/2023/03/010.

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Abstract The topological classification of one-loop Weinberg operator at dimension-5 leads to systematic categorization of one-loop neutrino mass models. All one-loop neutrino mass models must fall in one of these categories. Among these topological categories, loop extension of canonical seesaw scenarios is interesting in light of the current LHC run. Apart from one-loop contribution, these extensions result in dominant tree-level contribution to neutrino masses. The immediate remedy to obtain dominant one-loop contribution requires combination of flavor symmetries and enlarged field content. Alternatively, in this work, we propose a minimal way of realizing the topological structures with dominant one-loop contribution using modular variant of the permutation symmetries. In such a realization, no new fields are needed apart from those permitted by the topology itself. For the first time, we have realized one such topological Lorentz structure(T4-2-i) pertaining to one-loop extension of Type-II seesaw using modular A4 symmetry. Here, modular weights play an important role in suppressing tree-level terms and stabilizing the particles running in the loop(Ni , ρ and ϕ), thus, making them suitable dark matter candidates. In this work, we have explored the possibility of fermionic dark matter candidate where right-handed neutrino (N 1) is assumed to be lightest. We have, also, analyzed the compatibility of the model with neutrino oscillation data and obtained model predictions for effective Majorana mass Mee and CP violation. Furthermore, the predictions on relic density of dark matter and its direct detection considering bound on lepton flavor violating process, μ → eγ have, also, been investigated.

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Lu, Wei. "A Clifford algebra approach to chiral symmetry breaking and fermion mass hierarchies". International Journal of Modern Physics A 32, nr 26 (20.09.2017): 1750159. http://dx.doi.org/10.1142/s0217751x17501597.

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We propose a Clifford algebra approach to chiral symmetry breaking and fermion mass hierarchies in the context of composite Higgs bosons. Standard model fermions are represented by algebraic spinors of six-dimensional binary Clifford algebra, while ternary Clifford algebra-related flavor projection operators control allowable flavor-mixing interactions. There are three composite electroweak Higgs bosons resulted from top quark, tau neutrino, and tau lepton condensations. Each of the three condensations gives rise to masses of four different fermions. The fermion mass hierarchies within these three groups are determined by four-fermion condensations, which break two global chiral symmetries. The four-fermion condensations induce axion-like pseudo-Nambu–Goldstone bosons and can be dark matter candidates. In addition to the 125 GeV Higgs boson observed at the Large Hadron Collider, we anticipate detection of tau neutrino composite Higgs boson via the charm quark decay channel.

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Das, Pritam, i Mrinal Kumar Das. "Phenomenology of keV sterile neutrino in minimal extended seesaw". International Journal of Modern Physics A 35, nr 22 (7.08.2020): 2050125. http://dx.doi.org/10.1142/s0217751x20501250.

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We explore the possibility of a single generation of keV scale sterile neutrino [Formula: see text] as a dark matter candidate within the minimal extended seesaw (MES) framework and its influence in neutrinoless double beta decay [Formula: see text] study. Three hierarchical right-handed neutrinos were considered to explain neutrino mass. We also address baryogenesis via the mechanism of thermal leptogenesis considering the decay of the lightest RH neutrino to a lepton and Higgs doublet. A generic model based on [Formula: see text] flavor symmetry is constructed to explain both normal and inverted hierarchy mass pattern of neutrinos. Significant results on effective neutrino masses are observed in presence of sterile mass [Formula: see text] and active-sterile mixing [Formula: see text] in [Formula: see text]. Results from [Formula: see text] give stringent upper bounds on the active-sterile mixing matrix element. To establish sterile neutrino as dark matter within this model, we checked decay width and relic abundance of the sterile neutrino, which restricted sterile mass [Formula: see text] within some definite bounds. Constrained regions on the CP phases and Yukawa couplings are obtained from [Formula: see text] and baryogenesis results. Co-relations among these observable are also established and discussed within this framework.

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Francis, Ng K. "Cosmic Baryon Asymmetry in Different Neutrino Mass Models with Mixing Angles". Advances in High Energy Physics 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/689719.

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We investigate the comparative studies of cosmological baryon asymmetry in different neutrino mass models with and withoutθ13by considering the three-diagonal form of Dirac neutrino mass matrices and the three aspects of leptogenesis, unflavoured, flavoured, and nonthermal. We found that the estimations of any models withθ13are consistent in all the three stages of calculations of leptogenesis and the results are better than the predictions of any models withoutθ13which are consistent in a piecemeal manner with the observational data in all the three stages of leptogenesis calculations. For the normal hierarchy of Type-IA with charged lepton matrix, model with and withoutθ13predicts inflaton mass required to produce the observed baryon asymmetry to beMϕ~2.2×1011 GeV andMϕ~3.6×1010 GeV, and the corresponding reheating temperatures areTR~4.86×106 GeV andTR~4.50×106 GeV respectively. These predictions are not in conflict with the gravitino problem which required the reheating temperature to be below107 GeV. And these values apply to the recent discovery of Higgs boson of mass~125 GeV. One can also have the right order of relic dark matter abundance only if the reheating temperature is bounded to below107 GeV.

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Ma, Ernest. "The Higgs connection — Flavor and dark matter". International Journal of Modern Physics A 29, nr 13 (15.05.2014): 1430034. http://dx.doi.org/10.1142/s0217751x14300348.

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Chao, Wei, Huai-Ke Guo, Hao-Lin Li i Jing Shu. "Electron flavored dark matter". Physics Letters B 782 (lipiec 2018): 517–22. http://dx.doi.org/10.1016/j.physletb.2018.05.075.

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KILE, JENNIFER. "FLAVORED DARK MATTER: A REVIEW". Modern Physics Letters A 28, nr 34 (17.10.2013): 1330031. http://dx.doi.org/10.1142/s0217732313300310.

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The current status of flavored dark matter (DM) is reviewed. We discuss the main experimental constraints on models of flavored DM and survey some possible considerations which are relevant for the constructions of models. We then review the application of existing flavor principles to DM, with an emphasis on minimal flavor violation, and discuss implications of flavored DM on collider phenomenology.

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32

Blanchet, Steve. "Flavored Dark Matter and its Laboratory Tests". Journal of Physics: Conference Series 384 (13.09.2012): 012019. http://dx.doi.org/10.1088/1742-6596/384/1/012019.

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Lineros, Roberto A. "Dark Matter detection via lepton cosmic rays". Journal of Physics: Conference Series 259 (1.11.2010): 012101. http://dx.doi.org/10.1088/1742-6596/259/1/012101.

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Chen, Mu-Chun, Jinrui Huang i Volodymyr Takhistov. "Beyond minimal lepton-flavored Dark Matter". Journal of High Energy Physics 2016, nr 2 (luty 2016). http://dx.doi.org/10.1007/jhep02(2016)060.

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Lee, Chao-Jung, i Jusak Tandean. "Lepton-flavored scalar dark matter with minimal flavor violation". Journal of High Energy Physics 2015, nr 4 (kwiecień 2015). http://dx.doi.org/10.1007/jhep04(2015)174.

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Baek, Seungwon, i Zhaofeng Kang. "Naturally large radiative lepton flavor violating Higgs decay mediated by lepton-flavored dark matter". Journal of High Energy Physics 2016, nr 3 (marzec 2016). http://dx.doi.org/10.1007/jhep03(2016)106.

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Acaroğlu, Harun, Prateek Agrawal i Monika Blanke. "Lepton-flavoured scalar dark matter in Dark Minimal Flavour Violation". Journal of High Energy Physics 2023, nr 5 (15.05.2023). http://dx.doi.org/10.1007/jhep05(2023)106.

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Abstract We study a simplified model of lepton-flavoured complex scalar dark matter set up in the Dark Minimal Flavour Violation framework. In this model the Standard Model is extended by a scalar dark matter flavour triplet and a charged fermionic mediator, through which dark matter couples to the right-handed charged leptons of the Standard Model. This interaction is parameterized by a new 3 × 3 coupling matrix λ. Consistent with the field content of the model, also the Standard Model’s approximate flavour symmetry is extended to include an additional global U(3) associated with the dark matter flavour triplet. In addition to the Standard Model Yukawa couplings, the new coupling matrix λ is assumed to constitute the only source that violates this extended symmetry. We analyse the parameter space of this model by investigating constraints from collider searches, lepton flavour violating decays, the observed dark matter relic density, and direct as well as indirect dark matter detection experiments. By performing a combined analysis of all constraints we find that restrictions from lepton flavour violating decays, the observed relic density and dark matter nucleon scattering are dominant. The combination of the latter two renders limits from collider searches irrelevant while indirect detection constraints are weak due to a p-wave suppression of the annihilation rate. We conclude that lepton-flavoured scalar dark matter has a rich phenomenology and is a viable dark matter candidate.

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38

Desai, Niral, Can Kilic, Yuan-Pao Yang i Taewook Youn. "Suppressed flavor violation in lepton flavored dark matter from an extra dimension". Physical Review D 101, nr 7 (23.04.2020). http://dx.doi.org/10.1103/physrevd.101.075043.

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39

Hamze, Ali, Can Kilic, Jason Koeller, Cynthia Trendafilova i Jiang-Hao Yu. "Lepton-flavored asymmetric dark matter and interference in direct detection". Physical Review D 91, nr 3 (11.02.2015). http://dx.doi.org/10.1103/physrevd.91.035009.

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40

Arcadi, Giorgio, C. P. Ferreira, Florian Goertz, M. M. Guzzo, Farinaldo S. Queiroz i A. C. O. Santos. "Lepton flavor violation induced by dark matter". Physical Review D 97, nr 7 (17.04.2018). http://dx.doi.org/10.1103/physrevd.97.075022.

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41

Heurtier, Lucien, i Daniele Teresi. "Dark matter and observable lepton flavor violation". Physical Review D 94, nr 12 (27.12.2016). http://dx.doi.org/10.1103/physrevd.94.125022.

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42

Barger, Vernon, Danny Marfatia, Azar Mustafayev i Ali Soleimani. "Supersymmetric dark matter and lepton flavor violation". Physical Review D 80, nr 7 (16.10.2009). http://dx.doi.org/10.1103/physrevd.80.076004.

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43

Chiang, Cheng-Wei, Ryomei Obuchi i Kei Yagyu. "Dark sector as origin of light lepton mass and its phenomenology". Journal of High Energy Physics 2022, nr 5 (maj 2022). http://dx.doi.org/10.1007/jhep05(2022)070.

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Abstract We discuss a model with a dark sector, in which smallness of mass for charged leptons and neutrinos can naturally be explained by one-loop effects mediated by particles in the dark sector. These new particles, including dark matter candidates, also contribute to the anomalous magnetic dipole moment, denoted by (g − 2), for charged leptons. We show that our model can explain the muon (g − 2) anomaly and observed neutrino oscillations under the constraints from lepton flavor violating decays of charged leptons. We illustrate that the scenario with scalar dark matter is highly constrained by direct searches at the LHC, while that with fermionic dark matter allows for considering dark scalars with masses of order 100 GeV. Our scenario can be tested by a precise measurement of the muon Yukawa coupling as well as the direct production of dark scalar bosons at future electron-positron colliders.

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44

De, Bibhabasu. "Dark Contributions to $h\to \mu^+\mu^-$ in Presence of a $\mu$-flavored Vector-like Lepton". Chinese Physics Letters, 2.03.2023. http://dx.doi.org/10.1088/0256-307x/40/4/049501.

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Abstract A simple extension of the Standard Model (SM) with a $\mu$-flavored vector-like lepton (VLL) doublet and a real singlet scalar can have an interesting implication to the $h \to\mu^+\mu^-$ decay while offering the simplest possible explanation for the Dark Matter (DM) phenomenology. Assuming the real singlet scalar to be a viable DM candidate, it has been shown that the muon Yukawa coupling can have a negative contribution at the one-loop order if the $2^{\rm nd}$ generation SM leptons are allowed to couple with the VLL doublet. The stringent direct detection bounds corresponding to a real singlet scalar DM can easily be relaxed if the SM quark sector was augmented with a dimension-6 operator at some New Physics (NP) scale $\Lambda_{\rm NP}$. Thus, this model presents a significant phenomenological study where the muon Yukawa coupling can be corrected within a real singlet scalar DM framework. The considered parameter space can be tested/constrained through the high luminosity run of the LHC (HL-LHC) and future direct detection experiments.

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45

De, Bibhabasu, Debottam Das, Manimala Mitra i Nirakar Sahoo. "Magnetic moments of leptons, charged lepton flavor violations and dark matter phenomenology of a minimal radiative Dirac neutrino mass model". Journal of High Energy Physics 2022, nr 8 (19.08.2022). http://dx.doi.org/10.1007/jhep08(2022)202.

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Abstract In a simple extension of the standard model (SM), a pair of vector like lepton doublets (L1 and L2) and a SU(2)L scalar doublet (η) have been introduced to help in accommodating the discrepancy in determination of the anomalous magnetic moments of the light leptons, namely, e and μ. Moreover, to make our scenario friendly to a Dirac like neutrino and also for a consistent dark matter phenomenology, we specifically add a singlet scalar (S) and a singlet fermion (ψ) in the set-up. However, the singlet states also induce a meaningful contribution in other charged lepton processes. A discrete symmetry $$ {\mathcal{Z}}_2\times {\mathcal{Z}}_2^{\prime } $$ Z 2 × Z 2 ′ has been imposed under which all the SM particles are even while the new particles may be assumed to have odd charges. In a bottom-up approach, with a minimal particle content, we systematically explore the available parameter space in terms of couplings and masses of the new particles. Here a number of observables associated with the SM leptons have been considered, e.g., masses and mixings of neutrinos, (g − 2) anomalies of e, μ, charged lepton flavor violating (cLFV) observables and the dark matter (DM) phenomenology of a singlet-doublet dark matter. Neutrinos, promoted as the Dirac type states, acquire mass at one loop level after the discrete $$ {\mathcal{Z}}_2^{\prime } $$ Z 2 ′ symmetry gets softly broken, while the unbroken $$ {\mathcal{Z}}_2 $$ Z 2 keeps the dark matter stable. The mixing between the singlet ψ and the doublet vector lepton can be constrained to satisfy the electroweak precision observables and the spin independent (SI) direct detection (DD) cross section of the dark matter. In this analysis, potentially important LHC bounds have also been discussed.

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46

Huang, Guo-Yuan, Sudip Jana, Álvaro Santos de Jesus, Farinaldo Silva Queiroz i Werner Rodejohann. "Search for leptophilic dark matter at the LHeC". Journal of Physics G: Nuclear and Particle Physics, 12.04.2023. http://dx.doi.org/10.1088/1361-6471/accc4a.

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Abstract The Large Hadron electron Collider (LHeC) has been designed to push the field of deep inelastic scattering to the high energy and intensity frontier using an intense electron beam with a proton beam from the High Luminosity–Large Hadron Collider. However, LHeC is also a great laboratory for new physics. In this work, we propose a search for dark matter that couples with leptons. This may yield $ej + \slashed{E}$ and $\mu j + \slashed{E}$ signals that can be potentially observed through simple missing-energy cuts that suppress the Standard Model background. Considering direct dark matter detection and LHC constraints, we show that LHeC can indeed discover a weak scale dark matter fermion for masses up to $350$~GeV, which reproduces the correct relic density, and has interesting implications for lepton flavor violation.

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Chen, Kai-Feng, Cheng-Wei Chiang i Kei Yagyu. "An explanation for the muon and electron g − 2 anomalies and dark matter". Journal of High Energy Physics 2020, nr 9 (wrzesień 2020). http://dx.doi.org/10.1007/jhep09(2020)119.

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Abstract We propose simple models with a flavor-dependent global U(1)ℓ and a discrete ℤ2 symmetries to explain the anomalies in the measured anomalous magnetic dipole moments of muon and electron, (g − 2)μ,e, while simultaneously accommodating a dark matter candidate. These new symmetries are introduced not only to avoid the dangerous lepton flavor-violating decays of charged leptons, but also to ensure the stability of the dark matter. Our models can realize the opposite-sign contributions to the muon and electron g − 2 via one-loop diagrams involving new vector-like leptons. Under the vacuum stability and perturbative unitarity bounds as well as the constraints from the dark matter direct searches and related LHC data, we find suitable parameter space to simultaneously explain (g − 2)μ,e and the relic density. In this parameter space, the coupling of the Higgs boson with muons can be enhanced by up to ∼ 38% from its Standard Model value, which can be tested in future collider experiments.

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48

Brzeminski, Dawid, Saurav Das, Anson Hook i Clayton Ristow. "Constraining Vector Dark Matter with neutrino experiments". Journal of High Energy Physics 2023, nr 8 (28.08.2023). http://dx.doi.org/10.1007/jhep08(2023)181.

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Abstract Vector Dark Matter (VDM) that couples to lepton flavor (Le, Lμ, Lτ) acts similarly to a chemical potential for the neutrino flavor eigenstates and modifies neutrino oscillations. VDM imparts unique signatures such as time and directional dependence with longer baselines giving better sensitivity. We use the non-observation of such a signal at Super-Kamiokande to rule out the existence of VDM in a region of parameter space several orders of magnitude beyond other constraints and show the projected reach of future experiments such as DUNE.

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49

Tran, Van Que, i Tzu-Chiang Yuan. "Charged lepton flavor violating radiative decays li → ljγ in G2HDM". Journal of High Energy Physics 2023, nr 2 (13.02.2023). http://dx.doi.org/10.1007/jhep02(2023)117.

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Abstract We compute the electromagnetic form factors of the liljγ vertex at one-loop level in the minimal G2HDM which has a sub-GeV vector dark matter candidate. The results are applied to the radiative decay rates for the charged lepton flavor violating processes li → ljγ, and the anomalous magnetic dipole moment and the electric dipole moment of the charged lepton. To numerically compute the branching ratio for μ → eγ and compare with the latest experimental limit from MEG, we adapt our previous parameter space scan that is consistent with the relic density and constraints from direct searches of dark matter, W and Z mass measurements, as well as the LHC Higgs signal strengths and invisible width. While the extra contributions are at least an order of magnitude smaller than required to explain the ~4.2σ discrepancy in the muon anomaly, the existing MEG limit imposes stringent constraint on the parameter space. The remaining viable parameter space can be further probed by the MEG II sensitivity for μ → eγ as well as from the direct searches of sub-GeV dark matter in foreseeable future. Higher loop contributions may be significant to resolve the discrepancy in the muon anomaly and generate a non-vanishing electric dipole moments for the standard model quarks and leptons in G2HDM.

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Sahu, Purushottam, Aishwarya Bhatta, Rukmani Mohanta, Shivaramakrishna Singirala i Sudhanwa Patra. "Flavour anomalies and dark matter assisted unification in SO(10) GUT". Journal of High Energy Physics 2022, nr 11 (7.11.2022). http://dx.doi.org/10.1007/jhep11(2022)029.

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Abstract With the recent experimental hint of new physics from flavor physics anomalies, combined with the evidence from neutrino masses and dark matter, we consider a minimal extension of SM with a scalar leptoquark and a fermion triplet. The scalar leptoquark with couplings to leptons and quarks can explain lepton flavor non-universality observables RK, $$ {R}_{K^{\left(\ast \right)}} $$ R K ∗ , $$ {R}_{D^{\left(\ast \right)}} $$ R D ∗ and RJ/ψ. Neutral component of fermion triplet provides current abundance of dark matter in the Universe. The interesting feature of the proposal is that the minimal addition of these phenomenologically rich particles (scalar leptoquark and fermion triplet) assist in realizing the unification of the gauge couplings associated with the strong and electroweak forces of standard model when embedded in the non-supersymmetric SO(10) grand unified theory. We discuss on unification mass scale and the corresponding proton decay constraints while taking into account the GUT threshold corrections.

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