Bibliographies thématiques / Astroparticle Physics - Standard Model (SM)

Littérature scientifique sur le sujet « Astroparticle Physics - Standard Model (SM) »

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Publié le 7 septembre 2023

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Articles de revues sur le sujet "Astroparticle Physics - Standard Model (SM)"

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Feng, Jonathan L., Felix Kling, Mary Hall Reno, Juan Rojo, Dennis Soldin, Luis A. Anchordoqui, Jamie Boyd et al. « The Forward Physics Facility at the High-Luminosity LHC ». Journal of Physics G : Nuclear and Particle Physics 50, no 3 (20 janvier 2023) : 030501. http://dx.doi.org/10.1088/1361-6471/ac865e.

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Abstract High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large number of particles along the beam collision axis, outside of the acceptance of existing LHC experiments. The proposed Forward Physics Facility (FPF), to be located several hundred meters from the ATLAS interaction point and shielded by concrete and rock, will host a suite of experiments to probe standard model (SM) processes and search for physics beyond the standard model (BSM). In this report, we review the status of the civil engineering plans and the experiments to explore the diverse physics signals that can be uniquely probed in the forward region. FPF experiments will be sensitive to a broad range of BSM physics through searches for new particle scattering or decay signatures and deviations from SM expectations in high statistics analyses with TeV neutrinos in this low-background environment. High statistics neutrino detection will also provide valuable data for fundamental topics in perturbative and non-perturbative QCD and in weak interactions. Experiments at the FPF will enable synergies between forward particle production at the LHC and astroparticle physics to be exploited. We report here on these physics topics, on infrastructure, detector, and simulation studies, and on future directions to realize the FPF’s physics potential.
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BETTINI, A. « ASTROPARTICLE PHYSICS ». International Journal of Modern Physics A 22, no 30 (10 décembre 2007) : 5550–60. http://dx.doi.org/10.1142/s0217751x07038815.

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Astroparticle is a very wide, expanding, sector of Physics; this report covers only a fraction of it complementing the plenary reports of Y. Takahashi and K. Inoue. I will focus, in particular, on the experimental evidence of new physics, beyond the Standard Model. Astroparticle and accelerator experiments will give complementary tools in the search of new particles, like those of the dark matter, and new fundamental fields, like the inflaton.
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Tinyakov, Peter, Maxim Pshirkov et Sergei Popov. « Astroparticle Physics with Compact Objects ». Universe 7, no 11 (25 octobre 2021) : 401. http://dx.doi.org/10.3390/universe7110401.

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Probing the existence of hypothetical particles beyond the Standard model often deals with extreme parameters: large energies, tiny cross-sections, large time scales, etc. Sometimes, laboratory experiments can test required regions of parameter space, but more often natural limitations lead to poorly restrictive upper limits. In such cases, astrophysical studies can help to expand the range of values significantly. Among astronomical sources, used in interests of fundamental physics, compact objects—neutron stars and white dwarfs—play a leading role. We review several aspects of astroparticle physics studies related to observations and properties of these celestial bodies. Dark matter particles can be collected inside compact objects resulting in additional heating or collapse. We summarize regimes and rates of particle capturing as well as possible astrophysical consequences. Then, we focus on a particular type of hypothetical particles—axions. Their existence can be uncovered due to observations of emission originated due to the Primakoff process in magnetospheres of neutron stars or white dwarfs. Alternatively, they can contribute to the cooling of these compact objects. We present results in these areas, including upper limits based on recent observations.
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GREEN, DAN. « "REDISCOVERING" THE STANDARD MODEL AT CMS ». Modern Physics Letters A 26, no 05 (20 février 2011) : 309–17. http://dx.doi.org/10.1142/s0217732311035134.

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The Large Hadron Collider (LHC) began 7 TeV C.M. energy operation in April, 2010. The CMS experiment immediately analyzed the earliest data taken in order to "rediscover" the Standard Model (SM) of high energy physics. By the late summer, all SM particles were observed and CMS began to search for physics beyond the SM and beyond the present limits set at the Fermilab Tevatron. The first LHC run ended in Dec., 2010 with a total integrated luminosity of about 45 pb-1 delivered to the experiments.
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Kitahara, Teppei. « Standard Model and New physics for ε′k/εk ». EPJ Web of Conferences 179 (2018) : 01007. http://dx.doi.org/10.1051/epjconf/201817901007.

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The first result of the lattice simulation and improved perturbative calculations have pointed to a discrepancy between data on ε′k/εk and the standard-model (SM) prediction. Several new physics (NP) models can explain this discrepancy, and such NP models are likely to predict deviations of ℬ(K → πvv) from the SM predictions, which can be probed precisely in the near future by NA62 and KOTO experiments. We present correlations between ε′k/εk and ℬ(K → πvv) in two types of NP scenarios: a box dominated scenario and a Z-penguin dominated one. It is shown that different correlations are predicted and the future precision measurements of K → πvv can distinguish both scenarios.
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Okada, Nobuchika, Digesh Raut et Desmond Villalba. « Domain-Wall Standard Model in non-compact 5D and LHC phenomenology ». Modern Physics Letters A 34, no 10 (28 mars 2019) : 1950080. http://dx.doi.org/10.1142/s0217732319500809.

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We propose a framework to construct “Domain-Wall Standard Model” in a non-compact 5-dimensional spacetime, where all the Standard Model (SM) fields are localized in certain domains of the 5th dimension and the SM is realized as a 4-dimensional effective theory without any compactification for the 5th dimension. In this context, we investigate the collider phenomenology of the Kaluza–Klein (KK) modes of the SM gauge bosons and the current constraints from the search for a new gauge boson resonance at the Large Hadron Collider Run-2. The couplings of the SM fermions with the KK-mode gauge bosons depend on the configuration of the SM fermions in the 5-dimensional bulk. This “geometry” of the model can be tested at the future Large Hadron Collider experiment, once a KK-mode of the SM gauge boson is discovered.
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Díaz Cruz, L. « The Higgs profile in the standard model and beyond ». Revista Mexicana de Física 65, no 5 Sept-Oct (2 septembre 2019) : 419. http://dx.doi.org/10.31349/revmexfis.65.419.

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We present a review of Higgs physics in the SM and beyond, including the tests of the Higgs boson properties that have been performed at LHC and have permitted to delineate its profile. After presenting the essential features of the BEH mechanism, and its implementation in the SM, we discuss how the Higgs mass limits developed over the years. These constraints in turn helped to classify the Higgs phenomenology (decays and production mechanisms), which provided the right direction to search for the Higgs particle, an enterprise that culminated with its discovery at LHC. So far, the constraints on the couplings of the Higgs particle, point towards a SM interpretation. However, the SM has open ends that suggest the need to look for extensions of the model. We discuss in general the connection of the Higgs sector with some new physics (e.g. supersymmetry, flavor and Dark matter), with special focus on a more flavored Higgs sector. Thus is realized in the most general 2HDM, and its textured version, which we study in general, and for its various limits, which contain distinctive flavor-violating signals that could be searched at current and future colliders.
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Koren, Seth. « A Note on Proton Stability in the Standard Model ». Universe 8, no 6 (30 mai 2022) : 308. http://dx.doi.org/10.3390/universe8060308.

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In this short note, we describe the symmetry responsible for absolute, nonperturbative proton stability in the Standard Model. The SM with Nc colors and Ng generations has an exact, anomaly-free, generation-independent, global symmetry group U(1)B−NcL×ZNgL, which contains a subgroup of baryon plus lepton number of order 2NcNg. This disallows proton decay for Ng>1. Many well-studied models beyond the SM explicitly break this global symmetry, and the alternative deserves further attention.
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Wolf, Günter. « Highlights in Subnuclear Physics ». International Journal of Modern Physics A 18, supp01 (février 2003) : 129–77. http://dx.doi.org/10.1142/s0217751x03016641.

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An overview on new developments in experimental particle and astroparticle physics is presented. This includes observation of CP violation in the B-sector, detection of direct CP violation in the K0-system, new measurements on solar neutrinos, cosmic microwave background radiation and properties of the universe, electroweak results from the large colliders and tests of the Standard Model, measurement of the anomalous magnetic moment of muons, structure of the proton at large energy transfers and virtualities, and heavy ion collisions at very high energies. Finally, the physics reach of TEVATRONII, LHC and TESLA, a linear e+e- collider proposed for the 0.5 - 1 TeV regime, is briefly reviewed.
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FUKUYAMA, TAKESHI. « SEARCHING FOR NEW PHYSICS BEYOND THE STANDARD MODEL IN ELECTRIC DIPOLE MOMENT ». International Journal of Modern Physics A 27, no 16 (17 juin 2012) : 1230015. http://dx.doi.org/10.1142/s0217751x12300153.

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This is a theoretical review of exploration of new physics beyond the Standard Model (SM) in the electric dipole moment (EDM) in elementary particles, atoms and molecule. EDM is a very important CP violating phenomenon and sensitive to new physics. Starting with the estimations of EDM of quarks–leptons in SM, we explore new signals beyond SM. However, these works drive us to wider frontiers where we search fundamental physics using atoms and molecules and vice versa. Paramagnetic atoms and molecules have great enhancement factor on electron EDM. Diamagnetic atoms and molecules are very sensitive to nuclear P and T odd processes. Thus EDM becomes the keyword not only of New Physics but also of unprecedented fruitful collaborations among particle, atomic and molecular physics. This review intends to help such collaborations over a wide range of physicists.
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Thèses sur le sujet "Astroparticle Physics - Standard Model (SM)"

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Birkel, Michael. « Astroparticle physics beyond the standard model ». Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388826.

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Kahlhoefer, Felix Karl David. « Complementarity of searches for dark matter ». Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:ec5b1afe-b75c-44d9-9dad-e0d342e46fa1.

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The striking evidence for the existence of dark matter in the Universe implies that there is new physics to be discovered beyond the Standard Model. To identify the nature of this dark matter is a key task for modern astroparticle physics, and a large number of experiments pursuing a range of different search strategies have been developed to solve it. The topic of this thesis is the complementarity of these different experiments and the issue of how to combine the information from different searches independently of experimental and theoretical uncertainties. The first part focuses on the direct detection of dark matter scattering in nuclear recoil detectors, with a special emphasis on the impact of the assumed velocity distribution of Galactic dark matter particles. By converting experimental data to variables that make the astrophysical unknowns explicit, different experiments can be compared without implicit assumptions concerning the dark matter halo. We extend this framework to include annual modulation signals and apply it to recent experimental hints for dark matter, showing that the tension between these results and constraints from other experiments is independent of astrophysical uncertainties. We explore possible ways of ameliorating this tension by changing our assumptions on the properties of dark matter interactions. In this context, we propose a new approach for inferring the properties of the dark matter particle, which does not require any assumptions about the structure of the dark matter halo. A particularly interesting option is to study dark matter particles that couple differently to protons and neutrons (so-called isospin-violating dark matter). Such isospin-violation arises naturally in models where the vector mediator is the gauge boson of a new U(1) that mixes with the Standard Model gauge bosons. In the second part, we first discuss the case where both the Z' and the dark matter particle have a mass of a few GeV and then turn to the case where the Z' is significantly heavier. While the former case is most strongly constrained by precision measurements from LEP and B-factories, the latter scenario can be probed with great sensitivity at the LHC using monojet and monophoton searches, as well as searches for resonances in dijet, dilepton and diboson final states. Finally, we study models of dark matter where loop contributions are important for a comparison of LHC searches and direct detection experiments. This is the case for dark matter interactions with Yukawa-like couplings to quarks and for interactions that lead to spin-dependent or momentum suppressed scattering cross sections at tree level. We find that including the contribution from heavy-quark loops can significantly alter the conclusions obtained from a tree-level analysis.
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Akrami, Yashar. « Supersymmetry vis-à-vis Observation : Dark Matter Constraints, Global Fits and Statistical Issues ». Doctoral thesis, Stockholms universitet, Fysikum, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-57194.

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Weak-scale supersymmetry is one of the most favoured theories beyond the Standard Model of particle physics that elegantly solves various theoretical and observational problems in both particle physics and cosmology. In this thesis, I describe the theoretical foundations of supersymmetry, issues that it can address and concrete supersymmetric models that are widely used in phenomenological studies. I discuss how the predictions of supersymmetric models may be compared with observational data from both colliders and cosmology. I show why constraints on supersymmetric parameters by direct and indirect searches of particle dark matter are of particular interest in this respect. Gamma-ray observations of astrophysical sources, in particular dwarf spheroidal galaxies, by the Fermi satellite, and recording nuclear recoil events and energies by future ton-scale direct detection experiments are shown to provide powerful tools in searches for supersymmetric dark matter and estimating supersymmetric parameters. I discuss some major statistical issues in supersymmetric global fits to experimental data. In particular, I further demonstrate that existing advanced scanning techniques may fail in correctly mapping the statistical properties of the parameter spaces even for the simplest supersymmetric models. Complementary scanning methods based on Genetic Algorithms are proposed.
At the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 4: Submitted.
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Strid, Carl-Fabian. « MAC-E-Filter characterization for PTOLEMY : a relic neutrino direct detection experiment ». Thesis, Luleå tekniska universitet, Rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-75678.

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The cosmic neutrino background (CNB) can be composed of both active and hypothetical sterileneutrinos. At approximately one second after big bang, neutrinos decoupled from radiationand matter at a temperature of approximately one MeV. Neutrinos played an important role inthe origin and evolution of our universe and have been indirectly verified by cosmological dataon the BBN (Big Bang nucleosynthesis) of the Big Bang.It was Steven Weinberg in 1962 that first theorized on the direct detection of relic neutrinos.The signal of the relic neutrino capture on a tritium target can be observed by studying theendpoint of the electrons kinetic energy that are above the endpoint energy of the beta decayspectrum. The PTOLEMY project aims to archive direct detection of the relic neutrinobackground with a large tritium target of 100 gram, MAC-E-Filter, RF-tracking, Time of flighttracking and a cryogenic calorimetry.In this thesis the MAC-E-Filter have been simulated in two filter configurations. In the firstconfiguration, the electron were simulated five times in the filter. Two in the opposite sideof the detector, one in the middle, and two at the detector. In the second configuration theelectrons was simulated in the entrance solenoid at a fixed position of y = -0.19634954 m fromthe center of the filter and in random positions. Both multiple electrons and single electronswere simulated in the second configuration.In the single electron configuration the electron had a starting position of y = -0.19634954 mfrom the center of the filter, and an initial kinetic energy of 18.6 KeV. The first filter configurationsuccessfully accomplished to simulate the electron track, as the electron was reflectedback and forth between the entry and detector solenoid. The electric and magnetic field profilediered at the entry and detector solenoid. The second filter configuration successfully showedthat the electron will reach the end solenoid, when the filter length was 0.5 m. When the filterlength was increased to 0.7 m, then the electron was reflected in the middle of the filter. Thesimulation showed that the electron energy dropped below 1 eV from 18.6 KeV as the electronpropagated through the filter. The magnetic and electric fields decreased exponentially in thedirection of the detector solenoid. The Simulation of multiple electrons showed mixed resultsand would need more modifications in order to come to a final conclusion.
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Barman, Rahool Kumar. « Higgs phenomenology and Dark Matter prospects in MSSM, NMSSM and U(1) extended SM ». Thesis, 2019. https://etd.iisc.ac.in/handle/2005/4962.

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Particle physics today is at a juncture where all particles predicted within Standard Model (SM) have been discovered at the particle colliders while no particles from the realm of physics beyond the Standard Model (BSM) have been observed yet. The discovery of the 125 GeV Higgs particle using the Run-I data collected at the Large Hadron Collider (LHC), by the ATLAS and CMS collaborations, has initiated a new era in particle physics. Comprehensive studies to investigate the spin and parity quantum number of the observed resonance prefer its scalar nature and numerous investigations find the properties of the observed resonance to be in good accordance with the predictions from SM. However, the possibility of the observed resonance to be a part of an extended Higgs sector is not ruled out by the current LHC data. Furthermore, the SM does not provide an explanation for various experimentally observed phenomena viz the existence of dark matter (SM), the neutrino masses, the baryon asymmetry. Several BSM theories have been proposed to address these shortcomings in SM, many of which also contain an extended Higgs sector
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Chiu, Justin. « Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at the LHC ». Thesis, 2020. http://hdl.handle.net/1828/12490.

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This thesis presents the search for the dark sector process h -> Zd Zd -> 4l in events collected by the ATLAS detector at the Large Hadron Collider in 2015--2018. In this theorized process, the Standard Model Higgs boson (h) decays to four leptons via two intermediate Beyond-the-Standard-Model particles each called Zd. This process arises from interactions of the Standard Model with a dark sector. A dark sector consists of one or more new particles that have limited or zero interaction with the Standard Model, such as the new vector boson Zd (dark photon). It could have a rich and interesting phenomenology like the visible sector (the Standard Model) and could naturally address many outstanding problems in particle physics. For example, it could contain a particle candidate for dark matter. In particular, Higgs decays to Beyond-the-Standard-Model particles are well-motivated theoretically and are not tightly constrained; current measurements of Standard Model Higgs properties permit the fraction of such decays to be as high as approximately 30%. The results of this search do not show evidence for the existence of the h -> Zd Zd -> 4l process and are therefore interpreted in terms of upper limits on the branching ratio B(h -> Zd Zd) and the effective Higgs mixing parameter kappa^prime.
Graduate
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Chapitres de livres sur le sujet "Astroparticle Physics - Standard Model (SM)"

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Grupen, Claus. « The Standard Model of Elementary Particles ». Dans Astroparticle Physics, 29–47. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-27339-2_2.

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De Angelis, Alessandro, et Mário Pimenta. « The Standard Model of Cosmology and the Dark Universe ». Dans Introduction to Particle and Astroparticle Physics, 455–542. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78181-5_8.

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De Angelis, Alessandro, et Mário João Martins Pimenta. « The Standard Model of Cosmology and the Dark Universe ». Dans Introduction to Particle and Astroparticle Physics, 421–504. Milano : Springer Milan, 2015. http://dx.doi.org/10.1007/978-88-470-2688-9_8.

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De Angelis, Alessandro, et Mário Pimenta. « The Higgs Mechanism and the Standard Model of Particle Physics ». Dans Introduction to Particle and Astroparticle Physics, 393–454. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78181-5_7.

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De Angelis, Alessandro, et Mário João Martins Pimenta. « The Higgs Mechanism and the Standard Model of Particle Physics ». Dans Introduction to Particle and Astroparticle Physics, 361–420. Milano : Springer Milan, 2015. http://dx.doi.org/10.1007/978-88-470-2688-9_7.

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Bartolo, Nicola, Sabino Matarrese et Matteo Viel. « Cosmology : Searching for Deviations from the Standard Cosmological Model ». Dans Multiple Messengers and Challenges in Astroparticle Physics, 499–552. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-65425-6_7.

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« The Standard Model ». Dans Particle and Astroparticle Physics, 135–52. CRC Press, 2007. http://dx.doi.org/10.1201/9781584889328-12.

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« The Standard Model ». Dans Particle and Astroparticle Physics, 121–38. Taylor & ; Francis, 2007. http://dx.doi.org/10.1201/9781584889328.ch5.

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Albert Robson, Brian. « The Generation Model of Particle Physics ». Dans Redefining Standard Model Particle Physics [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.111584.

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The main purpose of this chapter is to present the Generation Model (GM) as an alternative to the Standard Model (SM) of particle physics, which is considered to be incomplete. It will be reported how the GM provides an understanding of three generations of leptons and quarks in the SM, a unified origin of mass, the cause and quantum nature of gravity, the matter-antimatter asymmetry problem, mixed quark states in hadrons, and the conservation of CP and the cause of parity violation in weak nuclear interactions.
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Zinn-Justin, Jean. « The Standard Model (SM) of fundamental interactions ». Dans Quantum Field Theory and Critical Phenomena, 567–92. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198834625.003.0023.

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The Standard Model (SM) 2020 of weak, electromagnetic and strong interactions, based on gauge symmetry and spontaneous symmetry breaking, describes all known fundamental interactions at the microscopic scale except gravity and, perhaps, interactions with dark matter. The SM model has been tested systematically in collider experiments, and in the case of strong interactions (quantum chromodynamics) also with numerical simulations. With the discovery in 2012 of the Higgs particle at the Large Hadron Collider (LHC) at the European Council for Nuclear Research (CERN), all particles of the SM have been identified, and most parameters have been measured. Still, the Higgs particle remains the most mysterious particle of the SM, since it is responsible for all the parameters of the SM except gauge couplings and since it leads to the fine-tuning problem. The discovery of its origin, and the precise study of its properties should be, in the future, one of the most important field of research in particle physics. Since we know now that the neutrinos have masses, the simplest extension of the SM implies Dirac neutrinos. With such a minimal modification, consistent so far (2020) with experimental data, the lepton and quark sectors have analogous structures: the lepton sector involves a mixing matrix, like the quark sector (three angles have been determined, the fourth charge conjugation parity (CP) violating angle is still unknown).
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Actes de conférences sur le sujet "Astroparticle Physics - Standard Model (SM)"

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Semikoz, Victor. « Lepton magnetohydrodynamics in Standard Model of electroweak interactions ». Dans International Workshop on Astroparticle and High Energy Physics. Trieste, Italy : Sissa Medialab, 2003. http://dx.doi.org/10.22323/1.010.0059.

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Ginzburg, Ilya F. « Physics beyond SM at photon colliders (γγ and eγ) ». Dans Beyond the standard model. American Institute of Physics, 1997. http://dx.doi.org/10.1063/1.54476.

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Bona, Marcella, Marco Ciuchini, Denis Derkach, Fabio Ferrari, Enrico Franco, Vittorio Lubicz, Guido Martinelli et al. « Unitarity Triangle global fits testing the Standard Model : UTfit 2021 SM update ». Dans The European Physical Society Conference on High Energy Physics. Trieste, Italy : Sissa Medialab, 2022. http://dx.doi.org/10.22323/1.398.0512.

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Orduz, Javier. « The Machine Learning role in High Energy Physics ». Dans LatinX in AI at Neural Information Processing Systems Conference 2018. Journal of LatinX in AI Research, 2018. http://dx.doi.org/10.52591/lxai2018120321.

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We explore some Standard Model (SM) extensions considering Machine Learning (ML) techniques. This is stage one, looking for recents papers, collaborations and events to build the framework and the contributions in this exciting field which combines: Physics, Computing, Mathematics and Artificial Intelligence. Our main expectations (stage two of the project) are to explore some of the new physics scenarios such as THDM, gauge extended models and vector-like models, and we investigate the observables and parameters using some ML techniques to place some bounds and define exclusion regions for the models. These techniques could prove to be useful in the understanding of flavor-changing scalar interactions, the detection of new particles and precise measurements of SM particles.
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