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These proceedings introduce the main techniques and ideas for a systematic effective field theory analysis of CP violation in the charged lepton sector. This study is required because the Standard Model of particle physics predicts a very…

高能物理 - 唯象学 · 物理学 2022-09-21 Giovanni Marco Pruna

Considering the constraints from the experimental data on $\mu\rightarrow e\gamma$, $\mu\rightarrow3e$, $\mu-e$ conversion etc., we analyze the Lepton Flavor Violating decays $\phi(J/\Psi,\Upsilon(1S)) \rightarrow e^+\mu^-(\mu^+\tau^-)$ in…

高能物理 - 唯象学 · 物理学 2015-06-11 Ke-Sheng Sun , Tai-Fu Feng , Tie-Jun Gao , Shu-Min Zhao

The one--loop contribution of the two CP--violating components of the $WW\gamma$ vertex, $ \tilde{\kappa}_\gamma W^+_\mu W^-_\nu \tilde{F}^{\mu \nu}$ and $(\tilde{\lambda}_\gamma / m^2_W)W^+_{\mu \nu}W^{-\nu}_{\ \rho}\tilde{F}^{\rho \mu}$,…

高能物理 - 唯象学 · 物理学 2008-11-26 H. Novales--Sanchez , J. J. Toscano

New CP-violating asymmetries of decay leptons in $e^+\,e^-\;\ra\;t\,\bar{t}$, arising from electric and weak dipole couplings of $t\,\bar{t}$ to $\gamma$ and $Z$, are examined in the case of unpolarized and longitudinally polarized…

高能物理 - 唯象学 · 物理学 2010-11-01 P. Poulose , Saurabh D. Rindani

Electric dipole moments constitute highly sensitive probes for CP-violating effects beyond the Standard Model. The upper limits obtained in various precision experiments can therefore be used to strongly restrict new physics models.…

高能物理 - 唯象学 · 物理学 2014-05-27 Martin Jung

We derive an upper limit on the electric dipole moment (EDM) of the tau-lepton, which follows from the precision measurements of the electron EDM.

高能物理 - 唯象学 · 物理学 2009-08-05 A. G. Grozin , I. B. Khriplovich , A. S. Rudenko

The electric dipole moment is a very sensitive probe of CP violation beyond the standard model. Light nuclei are particularly interesting since the CP violation may be enhanced by nuclear many-body effects. In this proceeding, we present…

核理论 · 物理学 2019-01-30 Nodoka Yamanaka

We analyze the connection between electric dipole moment of the electron and the soft leptogenesis in supersymmetric $B-L$ extension of the standard model. In this model, the $B-L$ symmetry is radiatively broken at TeV scale. Therefore, it…

高能物理 - 唯象学 · 物理学 2010-04-15 Yuji Kajiyama , Shaaban Khalil , Martti Raidal

We investigate new contributions to the neutron electric dipole moment induced by colored scalars. As an example, we evaluate contributions coming from the color octet, weak doublet scalar, accommodated within a modified Minimal Flavor…

高能物理 - 唯象学 · 物理学 2015-06-18 Svjetlana Fajfer , Jan O. Eeg

Relativistic many-body methods at different levels of approximations are employed to gain insights into the passage of the electron correlations from lower to higher levels in the accurate determination of the electric dipole polarizability…

原子物理 · 物理学 2015-03-18 Yashpal Singh , B. K. Sahoo

In this work, we address the impact of a small lepton number violation on charged lepton electric dipole moments - EDMs. Low-scale seesaw models protected by lepton number symmetry and leading to pseudo-Dirac pairs in the neutrino heavy…

高能物理 - 唯象学 · 物理学 2024-08-27 Asmaa Abada , Takashi Toma

The $\mu^-e^-\to e^-e^-$ process in a muonic atom is one of the promising probes to study the charged lepton flavor violation (CLFV). We have investigated the angular distribution of electrons from the polarized muon of the atomic bound…

高能物理 - 唯象学 · 物理学 2019-10-16 Yoshitaka Kuno , Joe Sato , Toru Sato , Yuichi Uesaka , Masato Yamanaka

The question of CP violating phases in supersymmetry and electric dipole moments (EDMs) is considered within the framework of supergravity grand unification (GUT) models with a light ($\stackrel{<}{\sim}$1 TeV) mass spectrum. In the minimal…

高能物理 - 唯象学 · 物理学 2008-11-26 E. Accomando , R. Arnowitt , B. Dutta

A permanent electric dipole moment of fundamental spin-1/2 particles violates both parity (P) and time re- versal (T) symmetry, and hence, also charge-parity (CP) symmetry since there is no sign of CPT-violation. The search for a neutron…

The electric dipole moment (EDM) of an atom could arise also from $P$-odd and $T$-odd electron-nucleon couplings. In this work we investigate a general class of dimension-$6$ electron-nucleon ($e$-$N$) nonminimal interactions mediated by…

高能物理 - 唯象学 · 物理学 2019-08-07 Jonas B. Araujo , A. H. Blin , Marcos Sampaio , Manoel M. Ferreira

The contribution of the R-parity violating minimal supersymmetric Standard model (RPVMSSM) at the one-loop level to the 199Hg atomic electric dipole moment (EDM) through P, CP-odd electron-nucleon (e-N) interaction is calculated. We show…

高能物理 - 唯象学 · 物理学 2012-06-20 Nodoka Yamanaka

After a brief review of the minimal flavour violation hypothesis and its implementation in the MSSM, the most general parametrisation of the soft supersymmetry-breaking terms by means of the charged lepton and neutrino spurions is…

高能物理 - 唯象学 · 物理学 2009-03-27 Lorenzo Mercolli

We examine the lepton dipole moments in an extension of the Standard Model (SM), which contains vector-like leptons that couple only to the second-generation SM leptons. The model naturally leads to sizable contributions to the muon $g-2$…

高能物理 - 唯象学 · 物理学 2023-02-08 Koichi Hamaguchi , Natsumi Nagata , Genta Osaki , Shih-Yen Tseng

Using electroweak data and an effective Lagrangian approach we obtain stringent bounds on the tau anomalous magnetic moment, $-0.004 \leq a_\tau \leq 0.006$, and on its electric dipole moment, $|d_\tau| \leq 1.1 \times 10^{-17} e$ cm. This…

高能物理 - 唯象学 · 物理学 2016-09-06 Rafel Escribano , Eduard Masso

We report the results of our {\it ab initio} relativistic many-body calculations of the electric dipole moment (EDM) $d_A$ arising from the electron-nucleus tensor-pseudotensor (T-PT) interaction, the interaction of the nuclear Schiff…

原子物理 · 物理学 2015-06-23 B. K. Sahoo , Yashpal Singh , B. P. Das