Results 1 to 10 of about 118,443 (214)

Lepton flavor violation, lepton (g − 2) μ, e and electron EDM in the modular symmetry

Journal of High Energy Physics, 2022
We study the lepton flavor violation (LFV), the leptonic magnetic moments (g − 2) μ, e and the electric dipole moment (EDM) of the electron in the Standard-Model Effective Field Theory with the Γ N modular flavor symmetry. We employ the stringy Ansatz on
Tatsuo Kobayashi, Hajime Otsuka, Morimitsu Tanimoto, Kei Yamamoto   +3 more
doaj   +1 more source

Electromagnetic properties of the $$\Sigma _{c}(2800)^+$$ Σ c ( 2800 ) + and $$\Lambda _c(2940)^+$$ Λ c ( 2940 ) + states via light-cone QCD

European Physical Journal C: Particles and Fields, 2023
The $$\Sigma _{c}(2800)^+$$ Σ c ( 2800 ) + and $$\Lambda _c(2940)^+$$ Λ c ( 2940 ) + states are among the most interesting and intriguing particles whose internal structures have not yet been elucidated.
Ulaş Ozdem
doaj   +1 more source

Charged lepton flavor violating radiative decays l i → l j γ in G2HDM

Journal of High Energy Physics, 2023
We compute the electromagnetic form factors of the l i l j γ vertex at one-loop level in the minimal G2HDM which has a sub-GeV vector dark matter candidate.
Van Que Tran, Tzu-Chiang Yuan
doaj   +1 more source

A large muon EDM from dark matter

Journal of High Energy Physics, 2023
We explore a model of dark matter (DM) that can explain the reported discrepancy in the muon anomalous magnetic moment and predict a large electric dipole moment (EDM) of the muon.
Kim Siang Khaw, Yuichiro Nakai, Ryosuke Sato, Yoshihiro Shigekami, Zhihao Zhang   +4 more
doaj   +1 more source

A large ‘Active Magnetic Shield’ for a high-precision experiment

European Physical Journal C: Particles and Fields, 2023
We present a novel Active Magnetic Shield (AMS), designed and implemented for the n2EDM experiment at the Paul Scherrer Institute. The experiment will perform a high-sensitivity search for the electric dipole moment of the neutron.
C. Abel, N. J. Ayres, G. Ban, G. Bison, K. Bodek, V. Bondar, T. Bouillaud, E. Chanel, J. Chen, W. Chen, P. -J. Chiu, C. B. Crawford, M. Daum, C. B. Doorenbos, S. Emmenegger, L. Ferraris-Bouchez, M. Fertl, A. Fratangelo, W. C. Griffith, Z. D. Grujic, P. Harris, K. Kirch, V. Kletzl, P. A. Koss, J. Krempel, B. Lauss, T. Lefort, P. Mullan, O. Naviliat-Cuncic, D. Pais, F. M. Piegsa, G. Pignol, M. Rawlik, I. Rienäcker, D. Ries, S. Roccia, D. Rozpedzik, W. Saenz-Arevalo, P. Schmidt-Wellenburg, A. Schnabel, E. P. Segarra, N. Severijns, T. Shelton, K. Svirina, R. Tavakoli Dinani, J. Thorne, R. Virot, N. Yazdandoost, J. Zejma, N. Ziehl, G. Zsigmond   +50 more
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Muon and electron g − 2 and lepton masses in flavor models

Journal of High Energy Physics, 2020
The stringent experimental bound on μ → eγ is compatible with a simultaneous and sizable new physics contribution to the electron and muon anomalous magnetic moments (g − 2)ℓ (ℓ = e, μ), only if we assume a non-trivial flavor structure of the dipole ...
Lorenzo Calibbi, M. L. López-Ibáñez, Aurora Melis, Oscar Vives   +3 more
doaj   +1 more source

Singlet scalar and 2HDM extensions of the Standard Model: CP-violation and constraints from (g − 2) μ and eEDM

Journal of High Energy Physics, 2018
We study popular scalar extensions of the Standard Model, namely the singlet extension, the 2-Higgs doublet model (2HDM) and its extension by a singlet scalar.
Venus Keus, Niko Koivunen, Kimmo Tuominen   +2 more
doaj   +1 more source

Electrically Charged One and a Half Monopole Solution [PDF]

, 2014
Recently, we have discussed the coexistence of a finite energy one-half monopole and a 't Hooft-Polyakov monopole of opposite magnetic charges. In this paper, we would like to introduce electric charge into this new monopoles configuration, thus creating
Ng, Ban-Loong, Teh, Rosy, Wong, Khai-Ming   +2 more
core   +2 more sources

Higgs boson decay h → Zγ and muon magnetic dipole moment in the μνSSM

Journal of High Energy Physics, 2020
To solve the μ problem and generate three tiny neutrino masses in the MSSM, the μ from ν Supersymmetric Standard Model (μνSSM) introduces three singlet right- handed neutrino superfields, which lead to the mixing of the Higgs doublets with the sneutrinos.
Chang-Xin Liu, Hai-Bin Zhang, Jin-Lei Yang, Shu-Min Zhao, Yu-Bin Liu, Tai-Fu Feng   +5 more
doaj   +1 more source

Lepton flavor violating decays of neutral higgses in extended mirror fermion model

Nuclear Physics B, 2016
We investigate the one-loop induced charged lepton flavor violating decays of the neutral Higgses in an extended mirror fermion model with non-sterile electroweak-scale right-handed neutrinos and a horizontal A4 symmetry in the lepton sector.
Chia-Feng Chang, Chia-Hung Vincent Chang, Chrisna Setyo Nugroho, Tzu-Chiang Yuan   +3 more
doaj   +1 more source