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New physics thresholds which can modify the diphoton and dilepton Higgs branching ratios significantly may also provide new sources of CP and lepton flavor violation. We find that limits on electric dipole moments impose strong constraints…

高能物理 - 唯象学 · 物理学 2015-03-20 David McKeen , Maxim Pospelov , Adam Ritz

We review the status of the electric dipole moment (EDM) of neutron in the Standard Model (SM). The contributions of the strong and electroweak interactions are discussed seperately. In each case the structure of the Lagrangian and the…

高能物理 - 唯象学 · 物理学 2009-09-25 Shahida Dar

We have studied the impact of CP-violating (CPV) effects on electroweak baryogenesis (EWBG) and the electric dipole moment (EDM) of electron ($d_e$), the electric dipole moment (EDM) of mercury neutron ($d_n$) and the electric dipole moment…

高能物理 - 唯象学 · 物理学 2025-02-18 Xiang Yang , Ming-Hui Guo , Jin-Lei Yang , Qing-Hua Li , Tai-Fu Feng

A permanent electric dipole moment (EDM) of a particle or system is a separation of charge along its angular-momentum axis and is a direct signal of T-violation and, assuming CPT symmetry, CP violation. For over sixty years EDMs have been…

原子物理 · 物理学 2019-02-08 Timothy Chupp , Peter Fierlinger , Michael Ramsey-Musolf , Jaideep Singh

Vector-like quarks have been of interest for a plethora of experimentally motivated reasons and have come under increased investigation recently due to their inclusion to the Standard Model (SM) appreciably improving global fits to several…

高能物理 - 唯象学 · 物理学 2022-07-12 Shyam Balaji

We study the two scalar leptoquarks capable of generating chirally-enhanced, sign-dependent contributions to lepton magnetic dipole moments (MDMs) and electric dipole moments (EDMs), $R_2\sim (\mathbf{3}, \mathbf{2}, 7/6)$ and $S_1\sim…

高能物理 - 唯象学 · 物理学 2022-01-06 Innes Bigaran , Raymond R. Volkas

Using QCD sum rules, we calculate the electric dipole moment of the neutron d_n induced by all CP violating operators up to dimension five. We find that the chromoelectric dipole moments of quarks \tilde d_i, including that of the strange…

高能物理 - 唯象学 · 物理学 2009-10-31 Maxim Pospelov , Adam Ritz

The Electric Dipole Moment of the electron (eEDM) is typically investigated in experiments using paramagnetic molecules. However, the physical observable in these searches consists in a linear combination of CP-violating interactions,…

高能物理 - 唯象学 · 物理学 2025-03-31 Marco Ardu , Nicola Valori

We discuss, within the framework of the Standard Model, the calculation of the two-loop electroweak contributions to the anomalous magnetic moment of the muon involving triangle fermionic loops of leptons and quarks. Because of the large…

高能物理 - 唯象学 · 物理学 2008-11-26 S. Peris , M. Perrottet , E. de Rafael

We present a discussion of model-independent contributions to the EDM of the electron. We focus on those contributions that emerge from a heavy scalar sector that is linearly realized. In particular, we explore the decoupling limit of the…

高能物理 - 唯象学 · 物理学 2025-10-22 Juan Manuel Dávila , Anirban Karan , Emilie Passemar , Antonio Pich , Luiz Vale Silva

We give a quantitative analysis of the electric dipole moments as a probe of high scale physics. We focus on the electric dipole moment of the electron since the limit on it is the most stringent. Further, theoretical computations of it are…

高能物理 - 唯象学 · 物理学 2015-06-19 Tarek Ibrahim , Ahmad Itani , Pran Nath

We perform a comprehensive study of the dominant two- and higher-loop contributions to the $^{205}$Tl, neutron and muon electric dipole moments induced by Higgs bosons, third-generation quarks and squarks, charginos and gluinos in the…

高能物理 - 唯象学 · 物理学 2010-04-05 Apostolos Pilaftsis

New bounds on the electric dipole moment (EDM) of charm and bottom quarks are derived using the stringent limits on their chromo-EDMs. The new limits, $|d_c|<1.5\times10^{-21}\:e\,\text{cm}$ and $|d_b|< 1.2\times 10^{-20}\:e\,\text{cm}$,…

高能物理 - 唯象学 · 物理学 2020-07-22 Hector Gisbert , Joan Ruiz Vidal

We evaluate the electric dipole moment of charged leptons in the standard model, where the complex phase of the Cabibbo-Kobayashi-Maskawa matrix is the only source of CP violation. We first prove that, at the quark-gluon level, it is…

高能物理 - 唯象学 · 物理学 2021-01-06 Yasuhiro Yamaguchi , Nodoka Yamanaka

The flavor changing and CP violating phenomena predicted in supersymmetric unified theories as a consequence of the large top quark Yukawa coupling, are investigated in the quark sector and compared with related phenomena in the lepton…

高能物理 - 唯象学 · 物理学 2009-10-09 Riccardo Barbieri , Lawrence Hall , Alessandro Strumia

The CP-violating quark chromoelectric dipole moment (qCEDM) operator, contributing to the electric dipole moment (EDM), mixes under renormalization and particularly on the lattice with the pseudoscalar density. The mixing coefficient is…

高能物理 - 格点 · 物理学 2021-10-12 Jangho Kim , Thomas Luu , Matthew D. Rizik , Andrea Shindler

If the underlying flavor symmetry is Abelian, quark mixings in $d_R$ sector are the most prominent. Such flavor violating effects can reveal itself through $\tilde d_R$ squark mixings if supersymmetry is realized in Nature. Quark-squark…

高能物理 - 唯象学 · 物理学 2007-05-23 Chun-Khiang Chua , Wei-Shu Hou

Hierarchical masses of quarks and leptons are addressed by imposing horizontal symmetries. In supersymmetric Standard Models, the same symmetries play a role in suppressing flavor violating processes induced by supersymmetric particles.…

高能物理 - 唯象学 · 物理学 2021-10-27 Yuichiro Nakai , Matthew Reece , Motoo Suzuki

The ACME collaboration has recently reported a new bound on the electric dipole moment (EDM) of the electron, $|d_e|< 1.1 \times 10^{-29}\, {\rm e\cdot cm}$ at 90$\%$ confidence level, reaching an unprecedented accuracy level. This can…

高能物理 - 唯象学 · 物理学 2021-11-05 Giuliano Panico , Alex Pomarol , Marc Riembau

We study the lepton flavor violation (LFV), the leptonic magnetic moments $(g-2)_{\mu,\,e} $ and the electric dipole moment (EDM) of the electron in the Standard-Model Effective Field Theory with the $\Gamma_N$ modular flavor symmetry. We…

高能物理 - 唯象学 · 物理学 2022-08-24 Tatsuo Kobayashi , Hajime Otsuka , Morimitsu Tanimoto , Kei Yamamoto