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We present an update on our calculations of the matrix elements of the CP violating quark and gluon chromo-EDM operators, as well as the operators these mix with, such as the QCD Theta-term. Their contribution to the neutron EDM is obtained…

高能物理 - 格点 · 物理学 2018-12-18 Tanmoy Bhattacharya , Boram Yoon , Rajan Gupta , Vincenzo Cirigliano

We study nuclear electric dipole moments induced by $\Delta F=1$ effective operators in the Standard Model Effective Field Theory. Such contributions arise through renormalization group evolutions and matching conditions at the electroweak…

高能物理 - 唯象学 · 物理学 2020-05-20 Motoi Endo , Daiki Ueda

The leading contributions to the electron (or muon) electric dipole moment due to CP violation in the charged Higgs sector are at the two-loop level. A careful analysis of the model-independent contribution is provided. We also consider…

高能物理 - 唯象学 · 物理学 2009-09-01 David Bowser-Chao , Darwin Chang , Wai-Yee Keung

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

We investigate CP violating 2 Higgs doublet models as an effective theory emerging from models with an $SU(3)_L \otimes U(1)_X$ gauge symmetry. Because of the extension of the electroweak symmetry, a characteristic structure of Yukawa…

高能物理 - 唯象学 · 物理学 2022-06-22 Zhiyi Fan , Kei Yagyu

The enhancement factors of the electric dipole moment (EDM) of the ground states of two paramagnetic atoms; rubidium (Rb) and caesium (Cs) which are sensitive to the electron EDM are computed using the relativistic coupled-cluster theory…

原子物理 · 物理学 2007-09-25 H. S. Nataraj , B. K. Sahoo , B. P. Das , R. K. Chaudhuri , D. Mukherjee

Electric dipole moments (EDMs) of charged leptons arise from a new source of CP violation in the lepton sector. In this paper, we calculate the EDMs of the charged leptons in the minimal scotogenic model with two singlet fermions, and the…

高能物理 - 唯象学 · 物理学 2021-04-15 Motoko Fujiwara , Junji Hisano , Chihiro Kanai , Takashi Toma

An appended sector of two octet-colored scalars, each an electroweak doublet, is an interesting extension of the simple two Higgs doublet model motivated by the minimal flavor violation. Their rich CP violating interaction gives rise to a…

高能物理 - 唯象学 · 物理学 2008-11-26 Jae Ho Heo , Wai-Yee Keung

We revisit the calculation of the electron, neutron, and proton electric dipole moments (EDMs) in the constrained minimal supersymmetric standard model (CMSSM). The relatively large mass of the Higgs boson, $m_H \simeq 125$ GeV coupled with…

高能物理 - 唯象学 · 物理学 2023-04-19 Kunio Kaneta , Natsumi Nagata , Keith A. Olive , Maxim Pospelov , Liliana Velasco-Sevilla

We study two Higgs doublet models with successful electroweak baryogenesis but without cancellations of electric dipole moments (EDMs). For the baryogenesis, additional scalar bosons are favored to couple mainly with the top quark with CP…

高能物理 - 唯象学 · 物理学 2025-04-11 Masashi Aiko , Motoi Endo , Shinya Kanemura , Yushi Mura

We apply a fully automated extension of the $R^*$-operation capable of calculating higher-loop anomalous dimensions of n-point Green's functions of arbitrary, possibly non-renormalisable, local Quantum Field Theories. We focus on the case…

高能物理 - 唯象学 · 物理学 2020-07-22 Jordy de Vries , Giulio Falcioni , Franz Herzog , Ben Ruijl

We derive a Wilson coefficient of a CP-violating purely gluonic dimension-6 operator called the Weinberg operator ($GG\tilde{G}$) generated by a scalar and two fermions at the two-loop level. We do not specify the representation of…

高能物理 - 唯象学 · 物理学 2020-05-20 Tomohiro Abe , Junji Hisano , Ryo Nagai

The magnetic dipole interaction played a central role in the development of QED, and continued in that role for the Standard Model. The muon anomalous magnetic moment has served as a benchmark for models of new physics, and the present…

高能物理 - 实验 · 物理学 2015-03-17 B. Lee Roberts

Electric dipole moments (EDMs) of nucleons and nuclei, which are sought as evidence of CP violation, require lattice calculations to connect constraints from experiments to limits on the strong CP violation within QCD or CP violation…

高能物理 - 格点 · 物理学 2019-01-18 S. Syritsyn , T. Izubuchi , H. Ohki

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…

高能物理 - 唯象学 · 物理学 2022-04-12 Y. Ünal , D. Severt , J. de Vries , C. Hanhart , Ulf-G. Meißner

We present for the first time a detailed and comprehensive analysis of the experimental results that set the current world sensitivity limit on the magnitude of the electric dipole moment (EDM) of the neutron. We have extended and enhanced…

An improved measurement of the electron electric dipole moment (EDM) appears feasible using ground-state alkali atoms in an atomic fountain in which a strong electric field, which couples to a conceivable electron dipole moment (EDM), is…

原子物理 · 物理学 2012-11-20 B. J. Wundt , C. T. Munger , U. D. Jentschura

The two-nucleon contributions to the electric dipole moment (EDM) of the deuteron, induced by the QCD $\theta$-term, are calculated in the framework of effective field theory up-to-and-including next-to-next-to-leading order. In particular…

高能物理 - 唯象学 · 物理学 2013-03-13 J. Bsaisou , C. Hanhart , S. Liebig , U. -G. Meißner , A. Nogga , A. Wirzba

An analysis of the electric dipole moment (EDM) of the neutron and of the leptons in the minimal supersymmetric standard model (MSSM) with the most general allowed set of CP violating phases without generational mixing is given. The…

高能物理 - 唯象学 · 物理学 2014-11-17 Tarek Ibrahim , Pran Nath

We reexamine the R-parity violating contribution to the fermion electric and chromo-electric dipole moments (EDM and cEDM) in the two-loop diagrams. It is found that the leading Barr-Zee type two-loop contribution is smaller than the result…

高能物理 - 唯象学 · 物理学 2012-06-20 Nodoka Yamanaka , Toru Sato , Takahiro Kubota