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Journal articles on the topic 'Two body muon decay'

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Published: 10 December 2022

Last updated: 28 January 2023

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1

Jones, Preston, and Douglas Singleton. "Gravitons to photons — Attenuation of gravitational waves." International Journal of Modern Physics D 24, no. 12 (October 2015): 1544017. http://dx.doi.org/10.1142/s0218271815440174.

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In this essay, we examine the response of an Unruh–DeWitt (UD) detector (a quantum two-level system) to a gravitational wave background. The spectrum of the UD detector is of the same form as some scattering processes or three body decays such as muon-electron scattering or muon decay. Based on this similarity, we propose that the UD detector response implies a “decay” or attenuation of gravitons, [Formula: see text], into photons, [Formula: see text], via [Formula: see text] or [Formula: see text]. Over large distances such a decay/attenuation may have consequences in regard to the detection of gravitational waves.

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2

Giovannella, S. "Status of the Mu2e experiment." EPJ Web of Conferences 179 (2018): 01003. http://dx.doi.org/10.1051/epjconf/201817901003.

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The Mu2e experiment at Fermilab searches for the charged-lepton flavor violating neutrino-less conversion of a negative muon into an electron in the field of an aluminum nucleus. The dynamics of such a process is well modelled by a two-body decay, resulting in a mono-energetic electron with an energy slightly below the muon rest mass. If no events are observed, in three years of running Mu2e will improve the current limit by four orders of magnitude. Such a charged lepton flavor-violating reaction probes new physics at a scale inaccessible with direct searches at either present or planned high energy colliders. The experiment both complements and extends the current search for muon decay to electron-photon at MEG and searches for new physics at the LHC. This paper focuses on the physics motivation, the design and the status of the experiment.

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3

Tanaka, K. H., Y. Kawashima, J. Imazato, M. Takasaki, H. Tamura, M. Iwasaki, E. Takada, et al. "New monochromatic muon beam channel using two body decay K+ → μ+v at rest in a production target." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 316, no. 2-3 (June 1992): 134–42. http://dx.doi.org/10.1016/0168-9002(92)90895-b.

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4

Seeger, Alfred, and Manfred Fähnle. "Vacancies in thermal equilibrium and ferromagnetism near the Curie temperature." International Journal of Materials Research 93, no. 10 (October 1, 2002): 1030–42. http://dx.doi.org/10.1515/ijmr-2002-0178.

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Abstract In several refractory body-centred cubic metals (α-Fe, V, Nb, Ta) the binding energy of positrons (e+) trapped in vacancies is too small to permit accurate determinations of the enthalpy of formation of monovacancies, H 1V F , $ H_{{\rm{1V}}}^{\rm{F}},$ by high-temperature positron annihilation. Owing to their larger mass, trapped positive muons (μ+) and π-mesons (π+) are much more firmly bound to vacancies. It is argued that the lattice steering (channelling or blocking) of their charged decay products (e+ or μ+) allows us to obtain accurate H 1V F $ H_{{\rm{1V}}}^{\rm{F}}$ values of the refractory bcc metals. In ferromagnets with high Curie temperatures T C, such as α-Fe, Co, and FeCo alloys, H 1V F $ H_{{\rm{1V}}}^{\rm{F}}$ may also be deduced from muon spin rotation (μ+SR) measurements. However, in Fe and Co this approach is limited by the strong sensitivity of the spontaneous magnetization against temperature fluctuations near T C. The reduction of this sensitivity in the so-called asymptotic critical regime by applying sufficiently strong external magnetic fields is investigated on the basis of the Arrott– Noakes equation. A method for determining the critical amplitudes occurring in this equation is proposed. In disordered Fe1–xCox alloys (0.2 ≤ x ≤ 0.75) the Curie temperatures are sufficiently high for the spontaneous magnetization in the bcc phase not to be critically affected by temperature fluctuations, hence these alloys are well suited for μ+SR investigations of thermal vacancies. From an analysis of the available positron-annihilation and self-diffusion data the vacancy migration enthalpy in disordered Fe0.5Co0.5 is found to be (1.1 ± 0.2) eV, in good agreement with quenching data and with the value established for α-Fe.

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Cahn, Robert N. "J. David Jackson (January 19, 1925–May 20, 2016): A Biographical Memoir." Annual Review of Nuclear and Particle Science 71, no. 1 (September 21, 2021): 23–36. http://dx.doi.org/10.1146/annurev-nucl-021621-035759.

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John David (“Dave”) Jackson, a Canadian-born theoretical physicist, contributed significantly to particle, nuclear, and atomic physics. He is best known, however, for his text Classical Electrodynamics, which has been a fixture in physics graduate education around the world for more than 50 years. It is generally referred to simply as “Jackson.” This textbook, which has inspired fear and wonder alike in generations of students, clearly reflects the author's fascination with physical phenomena, his renowned mathematical dexterity, and his appreciation of the elegance of physical laws. Jackson's major contributions to research included the theory of muon-catalyzed fusion; the analysis, with Kurt Gottfried, of angular distributions in quasi-two-body elementary particle collisions; and the elucidation of charmonium-state decays. Jackson influenced the development of physics research throughout the United States as well as internationally—particularly through his work on the nascent Superconducting Super Collider. An active promoter of civil liberties and human rights, he was one of the leaders of the efforts to free Andrei Sakharov, Yuri Orlov, and Anatoly Shcharansky from Soviet imprisonment.

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6

Freitas, A., S. Heinemeyer, W. Hollik, W. Walter, and G. Weiglein. "Calculation of fermionic two-loop contributions to muon decay." Nuclear Physics B - Proceedings Supplements 89, no. 1-3 (October 2000): 82–87. http://dx.doi.org/10.1016/s0920-5632(00)00827-6.

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7

Awramik, M., and M. Czakon. "Two loop electroweak bosonic corrections to the muon decay lifetime." Nuclear Physics B - Proceedings Supplements 116 (March 2003): 238–42. http://dx.doi.org/10.1016/s0920-5632(03)80177-9.

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8

CHIZHOV, M. V. "NEW TENSOR INTERACTIONS IN μ-DECAY." Modern Physics Letters A 09, no. 32 (October 20, 1994): 2979–85. http://dx.doi.org/10.1142/s0217732394002811.

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The most general form of Hamiltonian for the muon decay is presented. We assume that it arises as a result of the exchange of intermediate bosons with a momentum q and naturally should depend on this momentum. That allows us to introduce two additional coupling constants for the tensor interactions which give rise to new parameters in the energy spectrum of positrons. The experimental consequences of such a generalization are discussed.

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9

Sungu, J. Y., H. Sundu, and K. Azizi. "Semileptonic Transition of Tensorχc2(1P)toDsMeson." Advances in High Energy Physics 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/252795.

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Taking into account the two-gluon condensate corrections, the transition form factors of the semileptonicχc2→Dsl-ν(l=e,μ)decay channel are calculated via three-point QCD sum rules. These form factors are used to estimate the decay width of the transition under consideration in both electron and muon channels. The obtained results can be used both in direct search for such decay channels at charm factories and in analysis of theBcmeson decay at LHC.

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10

Warren, J. T., K. E. O’Hara, and J. P. Wolfe. "Two-body decay of thermalized excitons inCu2O." Physical Review B 61, no. 12 (March 15, 2000): 8215–23. http://dx.doi.org/10.1103/physrevb.61.8215.

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11

Baker, M. D., H. D. Knox, and E. Breitenberger. "Cross Sections for Two-Body Sequential Decay Reactions." Nuclear Science and Engineering 96, no. 1 (May 1987): 39–45. http://dx.doi.org/10.13182/nse87-a16362.

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12

Yamamoto, Hitoshi. "Inclusive Decay Distributions of Coherent Two-Body States." Physical Review Letters 79, no. 13 (September 29, 1997): 2402–5. http://dx.doi.org/10.1103/physrevlett.79.2402.

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13

Faessler, A. "Super-Kamiokande neutrino oscillations and the supersymmetric model." HNPS Proceedings 9 (February 11, 2020): 14. http://dx.doi.org/10.12681/hnps.2773.

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The standard model predicts a ratio of 2 for the number of atmospheric muon to electron neutrinos, while super-Kamiokande and others measure a much smaller value (1.30±0.02 for super-Kamiokande). Super-Kamiokande is also able to measure roughly the direction and the energy of the neutrinos. The zenith-angle dependence for the muon neutrinos suggests that the muon neutrinos oscillate into a third neutrino species, either into the r neutrino or a sterile neutrino. This finding is inves- tigated within the supersymmetric model. The neutrinos mix with the neutralinos, this meaning the wino, the bino and the two higgsinos. The 7 x 7 mass matrix is calculated on the tree level. One finds that the mass matrix has three linearly dependent rows, which means that two masses are zero. They are identified with the two lightest neutrino masses. The fit of the super-Kamiokande data to oscillations between three neutrinos yields, together with the result of supersymmetry, that the third neutrino mass lies between 2x10^-2 and 10^-1 eV. The two lightest neutrino masses are in supersymmetry on the tree level zero. The averaged electron neutrino mass which is the essential parameter in the neutrinoless double-beta decay is given by {m_ve) ~ m_v3 P_ze < 0.8 x10^-2 eV (95% confidence limit). It is derived from the super-Kamiokande data in this supersymmetric model to be two orders smaller than the best value (1 eV) from the neutrinoless double-beta decay.

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14

MA, ERNEST, and GWO-GUANG WONG. "TWO-BODY RADIATIVE GLUINO DECAYS." Modern Physics Letters A 03, no. 16 (November 1988): 1561–68. http://dx.doi.org/10.1142/s0217732388001860.

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A gluino can decay into a color-singlet neutral fermion [Formula: see text] by radiating off a gluon. We study this process in a minimal supersymmetric extension of the standard model. A significant branching fraction is possible depending on how much [Formula: see text] overlaps with the Higgs fermion which couples to the t quark and the mass of the t quark itself.

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15

Martin Perez, Cristina, and Luigi Vigani. "Searching for the Muon Decay to Three Electrons with the Mu3e Experiment." Universe 7, no. 11 (November 3, 2021): 420. http://dx.doi.org/10.3390/universe7110420.

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Mu3e is a dedicated experiment designed to find or exclude the charged lepton flavor violating μ→ eee decay at branching fractions above 10−16. The search is pursued in two operational phases: Phase I uses an existing beamline at the Paul Scherrer Institute (PSI), targeting a single event sensitivity of 2·10−15, while the ultimate sensitivity is reached in Phase II using a high intensity muon beamline under study at PSI. As the μ→ eee decay is heavily suppressed in the Standard Model of particle physics, the observation of such a signal would be an unambiguous indication of the existence of new physics. Achieving the desired sensitivity requires a high rate of muons (108 stopped muons per second) along with a detector with large kinematic acceptance and efficiency, able to reconstruct the low momentum of the decay electrons and positrons. To achieve this goal, the Mu3e experiment is mounted with an ultra thin tracking detector based on monolithic active pixel sensors for excellent momentum and vertex resolution, combined with scintillating fibers and tiles for precise timing measurements.

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16

DOMINGO, FLORIAN, and ULRICH ELLWANGER. "CDF MULTI-MUON EVENTS AND SINGLET EXTENSIONS OF THE MSSM." Modern Physics Letters A 24, no. 08 (March 14, 2009): 557–66. http://dx.doi.org/10.1142/s0217732309030448.

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We discuss a generalization of the minimal supersymmetric extension of the Standard Model in the form of three additional singlet superfields, which would explain the essential features of the CDF multi-muon events presented recently: a large production cross section of ~ 100 pb originates from the production of a CP-odd scalar A with a mass in the 70–80 GeV range and a large value of tan β ~ 40. The CP-odd scalar A decays dominantly into CP-odd and CP-even scalars a1 and h1, which generate decay cascades h1 → 2h2 → 4a2 → 8τ, and a1 → h1 a2 with h1 decaying as above. The decay a2 → τ+τ- is slow, leading to a lifetime of [Formula: see text]. The phenomenology of the model differs from similar scenarios presented before in that one of the two cascades leads to 10 instead of 8 τ-leptons, and additional production processes like associate A production with [Formula: see text] pairs are relevant.

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17

Orito, S., K. Yoshimura, T. Haga, M. Minowa, and M. Tsuchiaki. "New limits on exotic two-body decay of orthopositronium." Physical Review Letters 63, no. 6 (August 7, 1989): 597–600. http://dx.doi.org/10.1103/physrevlett.63.597.

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18

Roth, M., T. Einfeld, K. H. Gericke, and C. Maul. "Competition between two- and three-body decay of Cl2O." Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science 26, no. 7 (January 2001): 513–17. http://dx.doi.org/10.1016/s1464-1917(01)00039-3.

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19

Winckler, Nicolas, Klaus Blaum, Fritz Bosch, and Yuri A. Litvinov. "Two-body beta decay of stored highly-charged ions." Nuclear Physics A 834, no. 1-4 (March 2010): 432c—435c. http://dx.doi.org/10.1016/j.nuclphysa.2010.01.057.

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20

Winckler, N., F. Bosch, and Y. A. Litvinov. "Two-body beta decay of stored few-electron ions." Hyperfine Interactions 199, no. 1-3 (April 19, 2011): 103–14. http://dx.doi.org/10.1007/s10751-011-0305-9.

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21

Behr, J. A., J. R. A. Pitcairn, D. G. Roberge, M. R. Pearson, C. Höhr, G. Gwinner, D. Ashery, et al. "Ion detection from beta decay and two-body decay experiments with laser-cooled atoms." Hyperfine Interactions 173, no. 1-3 (November 2006): 41–48. http://dx.doi.org/10.1007/s10751-007-9540-5.

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22

KAUR, HARPREET, and M. P. KHANNA. "TWO BODY NONLEPTONIC DECAYS OF Bs MESONS." International Journal of Modern Physics A 16, no. 04 (February 10, 2001): 529–40. http://dx.doi.org/10.1142/s0217751x0100307x.

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Two-body nonleptonic decays of [Formula: see text] mesons involving heavy to heavy transitions are discussed in detail. All these decay widths are estimated by the use of spectator model dominance. The form factors for various transitions are calculated in BSW model improved to O(1/mQ) by comparison with the heavy quark effective theory.

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23

KAMAL, A. N. "TWO-BODY FINAL STATE INTERACTIONS WITH EXAMPLES." International Journal of Modern Physics A 07, no. 15 (June 20, 1992): 3515–48. http://dx.doi.org/10.1142/s0217751x92001563.

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Two-body multichannel scattering is discussed using, for pedagogical reasons, a field-theoretical model. Methods for unitarizing two-body hadronic weak decay amplitudes are considered. For illustrative purposes detailed studies are carried out for the following three cases: (i) [Formula: see text], ωρ+, ϕρ+, (ii) D0 → ππ, [Formula: see text], and (iii) [Formula: see text], [Formula: see text].

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24

Wang, Xiaorong, and Feng Wei. "AN of Single Heavy Flavor Decay Muon in the PHENIX Experiment at RHIC." International Journal of Modern Physics: Conference Series 40 (January 2016): 1660043. http://dx.doi.org/10.1142/s2010194516600430.

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Transverse single-spin asymmetries provide valuable information about the spin structure of the nucleon. At RHIC energies, heavy-flavor production is dominated by gluon-gluon fusion, and the subsequent decay into high [Formula: see text] electrons or muons can be observed statistically in a collider detector like PHENIX. The transverse single-spin asymmetry in heavy-flavor production originates from the initial state correlation between the internal transverse momentum of the parton and the transverse spin of the nucleon (similar with the known Sivers effect). The measurement of transverse single-spin asymmetry of single muons from heavy flavor decay at RHIC serves as a clean probe and would provide important information on the gluon Sivers function. In 2012, the PHENIX experiment collected 9.2 [Formula: see text] integrated luminosity in transversely polarized [Formula: see text] collisions at [Formula: see text] = 200 GeV with a polarization of [Formula: see text]. The signal-to-background ratio was improved by a factor of two compared to the previous RHIC 2006 and 2008 results in high transverse momentum region ([Formula: see text]GeV). The recent PHENIX preliminary results of transverse single-spin asymmetries of single heavy flavor decay muon at forward-rapidity will be shown and the possible improvement on this measurement in 2015 with the help of the FVTX detector will be discussed.

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25

Efrosinin, V. P., I. B. Khriplovich, G. G. Kirilin, and Yu G. Kudenko. "Transverse muon polarization in K±→π0μ±ν decay induced by the two-photon final-state interaction." Physics Letters B 493, no. 3-4 (November 2000): 293–300. http://dx.doi.org/10.1016/s0370-2693(00)01167-9.

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26

LICHTENBERG, D. B. "A NEW TWO-BODY WAVE EQUATION WITH RELATIVISTIC KINEMATICS." Modern Physics Letters A 02, no. 10 (October 1987): 795–800. http://dx.doi.org/10.1142/s0217732387001002.

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27

NISHI, C. C. "ABSOLUTE NEUTRINO MASS FROM HELICITY MEASUREMENTS." Modern Physics Letters A 24, no. 03 (January 30, 2009): 219–27. http://dx.doi.org/10.1142/s021773230902814x.

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The possibility to access the absolute neutrino mass scale through the measurement of the wrong helicity contribution of charged leptons is investigated in pion decay. Through this method, one may have access to the same effective mass [Formula: see text] extractable from the tritium beta decay experiments for electron neutrinos as well as the analogous effective mass [Formula: see text] for muon neutrinos. In the channel [Formula: see text], the relative probability of producing an antineutrino with left helicity is enhanced if compared with the naive expectation (mν/2Eν)2. The possibility to constrain new interactions in the context of two-Higgs-Doublet models is also investigated.

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28

Kienle, Paul. "Two-body weak decay studies in an ion storage ring." Journal of Physics: Conference Series 171 (June 1, 2009): 012065. http://dx.doi.org/10.1088/1742-6596/171/1/012065.

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29

Karshenboim, S. G. "Two-body effects in the decay rate of atomic levels." Physical Review A 56, no. 5 (November 1, 1997): 4311–13. http://dx.doi.org/10.1103/physreva.56.4311.

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30

Melić, Blaženka. "LCSR analysis of exclusive two-body B decay into charmonium." Physics Letters B 591, no. 1-2 (July 2004): 91–96. http://dx.doi.org/10.1016/j.physletb.2004.04.019.

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31

Djouadi, A., J. Kalinowski, and P. M. Zerwas. "Two-and three-body decay modes of SUSY Higgs particles." Zeitschrift f�r Physik C Particles and Fields 70, no. 3 (April 26, 1996): 435–47. http://dx.doi.org/10.1007/s002880050121.

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32

BLUMENSCHEIN, ULLA. "SEARCH FOR ASSOCIATE CHARGINO NEUTRALINO PRODUCTION IN TRILEPTON FINAL STATES." International Journal of Modern Physics A 20, no. 15 (June 20, 2005): 3325–27. http://dx.doi.org/10.1142/s0217751x05026467.

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Searches have been performed for the trilepton decay signature from the associated production of the lightest chargino and the next-to-lightest neutralino in leptonic channels with (a) two electrons and a lepton, (b) an electron, a muon and a lepton (c) two muons and a lepton and (d) two like-sign muons. The searches use data taken with the DØ detector at the Fermilab Tevatron proton-antiproton collider at a center-of-mass energy of 1.96 TeV corresponding to an integrated luminosity of 147 pb-1 to 249 pb-1.

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Chahri, R., M. Jakha, S. Mouslih, B. Manaut, and S. Taj. "Two-body top-quark decay in a circularly polarized laser field." Laser Physics 33, no. 2 (January 12, 2023): 026002. http://dx.doi.org/10.1088/1555-6611/acaecd.

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Abstract The top quark is distinct from all other fermions due to its high mass and short lifetime. Therefore, it decays rapidly almost exclusively into a light quark and a W + gauge boson. Through all of these properties, the top quark can reveal new details about the standard model and possibly about new physics. In this paper, we have investigated the two-body decay of the top quark ( t → q W + ), where q represents one of the quarks d, s and b, in the presence of a monochromatic circularly polarized laser field. Using the lowest-order Dirac-Volkov formalism, we have analytically established the expression for the laser-assisted total decay width of the top quark. We have analyzed the dependence of the total decay width, as well as the lifetime and branching ratios (BRs) on the characteristic parameters of the laser. The results indicate that the laser has a decreasing effect on the decay width, leading to an extension of the lifetime. The lifetime behavior inside the laser field is explained by the quantum Zeno effect. More importantly, we find that the laser field with an appropriate frequency and electric field amplitude leads to a modification of the BRs either by the enhancement of the ( t → b W + ) mode or by the suppression of the ( t → s W + ) and ( t → d W + ) modes.

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Dorokhov, A. E., A. P. Martynenko, F. A. Martynenko, and A. E. Radzhabov. "The sigma-meson exchange contribution to the muonic hydrogen Lamb shift." EPJ Web of Conferences 212 (2019): 07003. http://dx.doi.org/10.1051/epjconf/201921207003.

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The sigma(ξ)meson exchange contribution to the potential of the muon-proton interactionin muonichydrogen inducedbythe ξ-meson coupling to two photons is estimated. The transition form factor ξ → γγ is deduced from the quark model and experimental data on the decay widths Γσγγ. It is shown that scalar meson exchange contribution to the Lamb shift in muonic hydrogen, △ELs(2P−2S ),is rather large and relevant for a comparison with coming precise experimental data.

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KLASEN, MICHAEL. "CALCULATING TWO- AND THREE-BODY DECAYS WITH FeynArts AND FormCalc." International Journal of Modern Physics C 14, no. 09 (November 2003): 1273–78. http://dx.doi.org/10.1142/s012918310300539x.

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The Feynman diagram generator FeynArts and the computer algebra program FormCalc allow for an automatic computation of 2→2 and 2→3 scattering processes in High Energy Physics. We have extended this package by four new kinematical routines and adapted one existing routine in order to accomodate also two- and three-body decays of massive particles. This makes it possible to compute automatically two- and three-body particle decay widths and decay energy distributions as well as resonant particle production within the Standard Model and the Minimal Supersymmetric Standard Model at the tree- and loop-level. The use of the program is illustrated with three standard examples: [Formula: see text], [Formula: see text], and [Formula: see text].

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MAITI, A. K., S. KOLA, and D. P. BHATTACHARYYA. "WEAK RADIATIVE DECAY WIDTH OF Λb→Λγ DECAY." Modern Physics Letters A 16, no. 31 (October 10, 2001): 2013–19. http://dx.doi.org/10.1142/s0217732301004881.

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We have systematically analyzed the two-body weak radiative Λb→Λγ decay of bottom baryon. The weak radiative decay proceeds through W-exchange accompanied by a photon emission. Effective Lagrangian has been used for the W-exchange bremsstrahlung processes to estimate the long distance effect through pole. The short distance effect at the quark level (b→sγ) is also estimated here. With these predictions we have finally obtained the branching ratio of Λb→Λγ as Br (Λb→Λγ)=2.3×10-10 which is in close agreement with the experimental results.

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SHEIKHOLESLAMI, S. M., and R. C. VERMA. "TWO-BODY MESONIC DECAYS OF B MESONS IN SU(4)." International Journal of Modern Physics A 07, no. 16 (June 30, 1992): 3691–712. http://dx.doi.org/10.1142/s0217751x92001642.

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Bakalov, D. "Short distance singularities of the relativistic two-body interaction and muon capture in hydrogen." Physics Letters A 170, no. 5 (November 1992): 393–96. http://dx.doi.org/10.1016/0375-9601(92)90893-q.

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Madar, Romain. "Search for fermionic Higgs boson decays in pp collisions at the ATLAS and CMS experiments." International Journal of Modern Physics: Conference Series 31 (January 2014): 1460287. http://dx.doi.org/10.1142/s2010194514602877.

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The newly discovered boson was only observed in diboson final states. The measurement of the fermionic decay modes of this new particle is essential to establish its compatibility with the Standard Model Higgs boson. The two main final states accessible at the LHC are the decay into pairs of b quarks and τ leptons, both of which are experimentally challenging. In some cases, the exploitation of specific Higgs boson production modes allows to significantly increase the experimental sensitivity. One can also extend the search by looking for di-muon final states. This article gives an overview of the Higgs boson searches in these three fermionic final states at the ATLAS and CMS experiments, focusing on the most recent developments and results.

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Madar, Romain. "Search for fermionic Higgs boson decays in pp collisions at the ATLAS and CMS experiments." International Journal of Modern Physics A 29, no. 26 (October 16, 2014): 1430055. http://dx.doi.org/10.1142/s0217751x14300555.

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The newly discovered boson was only observed in diboson final states. The measurement of the fermionic decay modes of this new particle is essential to establish its compatibility with the Standard Model Higgs boson. The two main final states accessible at the LHC are the decay into pairs of b quarks and τ leptons, both of which are experimentally challenging. In some cases, the exploitation of specific Higgs boson production modes allows to significantly increase the experimental sensitivity. One can also extend the search by looking for di-muon final states. This article gives an overview of the Higgs boson searches in these three fermionic final states at the ATLAS and CMS experiments, focusing on the most recent developments and results.

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Chen, Xiaoyun, Zhaozhao Yan, and Jialun Ping. "Two-body strong decay of light mesons with Gaussian expansion method." International Journal of Modern Physics A 29, no. 30 (December 8, 2014): 1450175. http://dx.doi.org/10.1142/s0217751x14501759.

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In this paper, we survey the radial and orbital excitations of I = 0 and [Formula: see text] systems anticipated up to 2.0 GeV in the framework of the chiral quark model. The Schrödinger equation is solved by using Gaussian expansion method. And using the wave functions obtained, instead of the simple harmonic oscillator wave functions, we study systematically the two-body strong decay (limited to S + S modes) of the systems. By comparing with the experimental data, we try to identify the normal states and exotic states.

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42

Skibiński, R., J. Golak, H. Witała, and W. Glöckle. "Final state interaction effects inμ-capture induced two-body decay of3He." Physical Review C 59, no. 5 (May 1, 1999): 2384–88. http://dx.doi.org/10.1103/physrevc.59.2384.

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Mo, Xiao-Hu. "Kinematics of τ two-body decay near τ threshold at BESIII." Chinese Physics C 34, no. 11 (November 2010): 1671–79. http://dx.doi.org/10.1088/1674-1137/34/11/001.

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Helmrich, S., A. Arias, N. Pehoviak, and S. Whitlock. "Two-body interactions and decay of three-level Rydberg-dressed atoms." Journal of Physics B: Atomic, Molecular and Optical Physics 49, no. 3 (January 21, 2016): 03LT02. http://dx.doi.org/10.1088/0953-4075/49/3/03lt02.

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Agashe, Kaustubh, Roberto Franceschini, Sungwoo Hong, and Doojin Kim. "Energy spectra of massive two-body decay products and mass measurement." Journal of High Energy Physics 2016, no. 4 (April 2016): 1–37. http://dx.doi.org/10.1007/jhep04(2016)151.

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Nardini, Franco. "Exponential decay for the eigenfunctions of the two body relativistic hamiltonian." Journal d'Analyse Mathématique 47, no. 1 (December 1986): 87–109. http://dx.doi.org/10.1007/bf02792534.

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Estabar, T., and H. Mehraban. "Analysis of four-body decay of D meson." International Journal of Modern Physics A 32, no. 02n03 (January 25, 2017): 1750011. http://dx.doi.org/10.1142/s0217751x17500117.

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The aim of this work is to provide a phenomenological analysis of the contribution of [Formula: see text] meson to [Formula: see text], [Formula: see text] and [Formula: see text] quasi-three-body decays. Such that the analysis of mentioned four-body decays is summarized into three-body decay and several channels are observed. Based on the factorization approach, hadronic three-body decays receive both resonant and nonresonant contributions. We compute both contributions of three-body decays. As, there are tree, penguin, emission, and emission annihilation diagrams for these decay modes. Our theoretical model for [Formula: see text] decay is based on the QCD factorization to quasi-two body followed by [Formula: see text]-wave. This model for this decay following experimental information which demonstrated two pion interaction in the [Formula: see text]-wave is introduced by the scalar resonance. The theoretical values are [Formula: see text], [Formula: see text] and [Formula: see text], while the experimental results of them are [Formula: see text], [Formula: see text] and [Formula: see text], respectively. Comparing computation analysis values with experimental values show that our results are in agreement with them.

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CABIBBO, NICOLA. "CONCLUDING REMARKS." International Journal of Modern Physics A 17, no. 24 (September 30, 2002): 3500–3508. http://dx.doi.org/10.1142/s0217751x02012892.

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Important new results have been presented at this conference. The direct violation of CP in K0 → π + π has been firmly established in two independent experiments, NA48 at CERN and KTeV at Fermilab. Both Babar at SLAC and Belle at Kek have determined the CP violation in [Formula: see text] oscillations through the study of the golden KS + Ψ decay mode. The observed CP violation agrees with the expectations of the Standard model, based on the quark-mixing phenomenon. The first results of the Sudbury Neutrino Observatory, SNO, suggest that the long-lasting solar neutrino puzzle has been finally solved in terms of neutrino oscillations. Results appeared after the conference which modify the theoretical prediction of the muon anomaly. This new result, if confirmed, would drastically reduce the significance of the discrepancy between the theoretically expected value for the muon anomaly and the recent results of the Brookhaven experiment.

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Dorokhov, A. E., A. P. Martynenko, F. A. Martynenko, and A. E. Radzhabov. "Hadronic contribution of light by light scattering in the energy spectrum of muonic hydrogen." EPJ Web of Conferences 204 (2019): 05008. http://dx.doi.org/10.1051/epjconf/201920405008.

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The contribution from scalar meson (S) exchange to the potential of the muon-proton interaction in muonic hydrogen induced by the scalar meson coupling to the two photon state is calculated. An estimate of transition form factor S → γγ is given on the basis of the quark model and experimental data on the decay widths $${\Gamma _{S\gamma \gamma }}$$. It is shown that scalar meson exchange contribution to the Lamb shift in muonic hydrogen ∆ELs(2P – 2S) is large and important for a comparison with precise experimental data.

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TRAMPETIĆ, JOSIP. "PHOTON-NEUTRINO INTERACTION IN θ-EXACT COVARIANT MODEL: PHENOMENOLOGY AND QUANTUM PROPERTIES." International Journal of Geometric Methods in Modern Physics 09, no. 06 (August 3, 2012): 1261016. http://dx.doi.org/10.1142/s0219887812610166.

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We construct the theta-exact covariant noncommutative model and obtain various closed constraints on the noncommutative scale from inelastic neutrino-nucleon scatterings, from plasmon decay into neutrino pair, from the Big Bang Nucleosynthesis and from the reheating phase after inflation, respectively. We find neutrino two-point function in a closed form and decoupling of the UV divergent term from softened UV/IR mixing term. Deformed dispersion relations at low energies are capable to account for the recent results from the OPERA collaboration on the superluminal speed of the muon neutrinos.

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