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Postulating the existence of a fnite-mass mediator of T,P-odd coupling between atomic electrons and nucleons we consider its effect on permanent electric dipole moment (EDM) of diamagnetic atoms. We present both numerical and analytical…

Atomic Physics · Physics 2016-10-05 Heman Gharibnejad , Andrei Derevianko

Closed-shell atoms and molecules such as Hg or TlF provide some of the best low-energy tests of hadronic $\mathcal{CP}$-violation which is considered to be a necessary ingredient to explain the observed excess of matter over antimatter in…

Triggered by experimental prospects to measure electromagnetic dipole moments of baryons containing a bottom quark, we calculate the CP-odd electric dipole moments (EDMs) of spin-1/2 single-bottom baryons. We consider CP-violating…

High Energy Physics - Phenomenology · Physics 2022-04-12 Y. Ünal , D. Severt , J. de Vries , C. Hanhart , Ulf-G. Meißner

At natural values of parameters of the model dicussed, the contribution of the chromoelectric dipole moment of the s-quark to the neutron electric dipole moment (EDM) exceeds considerably the experimental upper limit for the neutron EDM. As…

High Energy Physics - Phenomenology · Physics 2014-11-17 I. B. Khriplovich

Experimental searches for new, "fifth" forces are attracting a lot of attention because they allow to test theoretical extensions to the standard model. Here, we report a new experimental search for possible fifth forces, specifically…

Atomic Physics · Physics 2022-12-13 Kai Wei , Wei Ji , Changbo Fu , Arne Wickenbrock , Jiancheng Fang , Victor Flambaum , Dmitry Budker

In some models of physics beyond the Standard Model (SM), one of the leading low energy consequences of the model appears in the form of the chromo-electric dipole moments (CEDMs) of the gluons and light quarks. We examine if these CEDMs…

High Energy Physics - Phenomenology · Physics 2024-08-23 Kiwoon Choi , Sang Hui Im , Krzysztof Jodłowski

The electric dipole moment (EDM) of the top quark is calculated in a model with a vector like multiplet which mixes with the third generation in an extension of the MSSM. Such mixings allow for new CP violating phases. Including these new…

High Energy Physics - Phenomenology · Physics 2014-11-21 Tarek Ibrahim , Pran Nath

We discuss constraints on soft CP-violating couplings of axion-like particles with photon and fermions by using data on electric dipole moments of Standard Model particles. In particular, for the ALP leptophilic scenario we derive bounds on…

High Energy Physics - Phenomenology · Physics 2020-12-29 D. V. Kirpichnikov , Valery E. Lyubovitskij , Alexey S. Zhevlakov

At an hadronic scale the effect of CP-violating interactions that typically appear in extensions of the Standard Model may be described by an effective Lagrangian, in which the operators are expressed in terms of lepton and partonic gluon…

The chromoelectric dipole moment of the top quark is calculated in a model with a vector like multiplet which mixes with the third generation in an extension of the MSSM. Such mixings allow for new CP violating phases. Including these new…

High Energy Physics - Phenomenology · Physics 2011-08-04 Tarek Ibrahim , Pran Nath

A fourth generation of quarks, if it exist, may provide sufficient CP violation for the baryon asymmetry of the Universe. We estimate the neutron electric dipole moment in the presence of a fourth generation, and find it would be dominated…

High Energy Physics - Phenomenology · Physics 2013-05-29 Junji Hisano , Wei-Shu Hou , Fanrong Xu

In the CP violating supersymmetric extension of the standard model with local gauged baryon and lepton symmetries(BLMSSM), there are new CP violating sources which can give new contributions to the quark electric dipole moment (EDM).…

High Energy Physics - Phenomenology · Physics 2017-03-08 Shu-Min Zhao , Tai-Fu Feng , Zhong-Jun Yang , Hai-Bin Zhang , Xing-Xing Dong , Tao-Guo

The two-loop contribution to the electric dipole moment (EDM) and the chromo electric dipole moment (CEDM) of an arbitrary fermion f induced by the most general renormalizable tbW coupling with complex left- and right-handed components (a_L…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Avilez-Lopez , H. Novales-Sanchez , G. Tavares-Velasco , J. J. Toscano

We analyze contributions to the electric dipole (EDM) and Schiff (SFM) moments of deuteron induced by the CP-violating three-pseudoscalar meson couplings using phenomenological Lagrangian approach involving nucleons and pseudoscalar mesons…

High Energy Physics - Phenomenology · Physics 2020-07-08 Alexey S. Zhevlakov , Valery E. Lyubovitskij

The Minimal Supersymmetric Standard Model can possess several CP-violating phases beyond the conventional Cabibo-Kobayashi-Maskawa phase. We calculate the contribution of these phases to T-violating nuclear forces. These forces induce a…

High Energy Physics - Phenomenology · Physics 2009-09-15 Toby Falk , Keith A. Olive , Maxim Pospelov , Radu Roiban

Many experiments are underway in the world to search for a non-zero electric dipole moment (EDM) of a particle with spin 1/2 such as the neutron or the electron. Finding an EDM would reveal new sources of CP violation. EDM measurements are…

High Energy Physics - Phenomenology · Physics 2019-12-18 Guillaume Pignol

We calculate the electric dipole form factor of the neutron in a perturbative chiral quark model, parameterizing CP-violation of generic origin by means of effective electric dipole moments of the constituent quarks and their CP-violating…

High Energy Physics - Phenomenology · Physics 2008-11-26 Claudio Dib , Amand Faessler , Thomas Gutsche , Sergey Kovalenko , Jan Kuckei , Valery E. Lyubovitskij , Kem Pumsa-ard

New one- and two-loop contributions to the lepton's and nucleon's EDM, which are induced by an axion-like particle dark matter background, are examined. These contributions include effects from CP-violating ALP interactions with photons,…

High Energy Physics - Phenomenology · Physics 2025-09-17 Jason L. Evans , Nan Li , Junyuan Lyu

Recently an improved limits on the electron electric dipole moment, \eEDM, and dimensionless constant, $k_{T,P}$, characterizing the strength of the T,P-odd pseudoscalar$-$scalar electron$-$nucleus neutral current interaction in the…

Atomic Physics · Physics 2015-01-13 L. V. Skripnikov , A. V. Titov

Neutron electric dipole moment (EDM) due to single quark EDM and to the transition EDM is calculated in the minimal supersymmetric standard model. Assuming that the Cabibbo-Kobayashi-Maskawa matrix at the grand unification scale is the only…

High Energy Physics - Phenomenology · Physics 2010-11-01 T. Inui , Y. Mimura , N. Sakai , T. Sasaki