Results 1 to 10 of about 118,072 (139)

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
doaj   +1 more source

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

Magnetic and electric dipole moments of the $H\ {}^3\Delta_1$ state in ThO [PDF]

, 2011
The metastable $H \ {}^3\Delta_1$ state in the thorium monoxide (ThO) molecule is highly sensitive to the presence of a CP-violating permanent electric dipole moment of the electron (eEDM).
A. C. Vutha, B. L. Roberts, B. Spaun, D. DeMille, D. DeMille, E. Kirilov, G. Gabrielse, I. B. Khriplovich, J. M. Brown, J. M. Doyle, N. R. Hutzler, Y. V. Gurevich   +11 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

Constraining the neutrino magnetic dipole moment from white dwarf pulsations [PDF]

, 2014
Pulsating white dwarf stars can be used as astrophysical laboratories to constrain the properties of weakly interacting particles. Comparing the cooling rates of these stars with the expected values from theoretical models allows us to search for ...
Althaus, Leandro G., Bertolami, Marcelo M. Miller, Córsico, Alejandro H., García-Berro, Enrique, Kepler, S. O.   +4 more
core   +4 more sources