Quark level and hadronic contributions to the electric dipole moment of charged leptons in the standard model

Yamaguchi, Yasuhiro; Yamanaka, Nodoka

doi:10.48550/arxiv.2006.00281

Cited by 5 publications

(6 citation statements)

References 111 publications

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“…From the CPT theorem, T-violation implies CP-violation. The SM predicts an electron EDM (eEDM) value, denoted by d e , of |d e | ∼ 10 −39 e cm [6,7], which falls far outside the range of values current experiments can probe. However, several beyond the SM (BSM) paradigms predict values of the eEDM that are many orders of magnitude larger, such as variants of the Supersymmetric (SUSY) model and the left-right symmetric model, which, depending on the parameters, can predict a value of the eEDM as large as |d e | ∼ 10 −27 e cm [8,9].…”

Section: Introductionmentioning

confidence: 81%

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CP violating effects in $^{210}$Fr and prospects for new physics beyond the Standard Model

Shitara,

Yamanaka,

Sahoo

et al. 2020

Preprint

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We report theoretical results of the electric dipole moment (EDM) of 210 Fr which arises from the interaction of the EDM of an electron with the internal electric field in an atom and the scalarpseudoscalar electron-nucleus interaction; the two dominant sources of CP violation in this atom. Employing the relativistic coupled-cluster theory, we evaluate the enhancement factors for these two CP violating interactions to an accuracy of about 3% and analyze the contributions of the many-body effects. These two quantities in combination with the projected sensitivity of the 210 Fr EDM experiment provide constraints on new physics beyond the Standard Model. Particularly, we demonstrate that their precise values are necessary to account for the effect of the bottom quark in the Higgs doublet models.

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Section: Introductionmentioning

confidence: 81%

“…We briefly touch upon the SM contribution to the paramagnetic systems induced by the CP phase of the CKM matrix. As mentioned in the Introduction, the electron EDM is small (d e ∼ 10 −39 e cm) [6,7]. The leading contribution to the paramagnetic systems is actually from the S-PS interaction (see Fig.…”

mentioning

confidence: 85%

CP violating effects in $^{210}$Fr and prospects for new physics beyond the Standard Model

Shitara,

Yamanaka,

Sahoo

et al. 2020

Preprint

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“…The discovery of a non-vanishing electric dipole moment (EDM) of any fundamental particle in next generation experiments would unambiguously signal the existence of new sources of CP-violation beyond the Standard Model (SM) of particle physics. Indeed, many such models predict EDMs of elementary particles that are within reach of current experiments, with the SM contribution estimated to lie several orders of magnitude lower [1][2][3]. Such a discovery could supply a crucial ingredient towards solving the long standing problem of the origin of the cosmic baryon asymmetry [4,5].…”

Section: Introductionmentioning

confidence: 87%

Electron EDM in the complex two-Higgs doublet model

Altmannshofer,

Gori,

Hamer

et al. 2020

Preprint

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We present the first complete two loop calculation of the electron EDM in the complex two-Higgs doublet model. We confirm gauge-independence by demonstrating analytic cancellation of the gauge parameter ξ in the background field gauge and the 't Hooft R ξ gauge. We also investigate the behavior of the electron EDM near the decoupling limit, and determine the short-and longdistance contributions by matching onto an effective field theory. Compared with earlier studies of the electron EDM in the complex two-Higgs doublet model, we note disagreements in several places and provide diagnoses where possible. We also provide expressions for EDMs of light quarks.

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“…is known to be unobservably small [91][92][93]. While the effect of the Weinberg operator to the nucleon EDM has already been evaluated [66,[94][95][96][97][98][99][100], its contribution to the CP-odd nuclear force, which is expected to be one of the leading effects to the atomic and nuclear EDMs, is less known.…”

Section: Introductionmentioning

confidence: 99%

Contribution of the Weinberg-type Operator to atomic and nuclear electric dipole moments

Osamura,

Gubler,

Yamanaka

2022

Preprint

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The contribution of the CP violating three-gluon Weinberg operator, 1 3! w f abc νραβ G a µν G b αβ G cµ ρ , to the atomic and nuclear EDMs is estimated using QCD sum rules. After calculating the transition matrix element between the pion and the vacuum through the Weinberg operator, we obtain the long-range CP-odd nuclear force by determining the isovector CP-odd pion-nucleon vertex, using chiral perturbation theory at NLO. The EDMs of 199 Hg, 129 Xe, 225 Ra, 2 H, and 3 He are finally given including comprehensive uncertainty analysis. While the leading contribution of the 199 Hg EDM is given by the intrinsic nucleon EDM, that of 129 Xe atom may be dominated by the one-pion exchange CP-odd nuclear force generated by the Weinberg operator. From current experimental data of the 199 Hg atomic EDM, we obtain an upper limit on the Weinberg operator magnitude of |w| < 4×10 −10 GeV −2 if we assume that it is the only source of CP violation at the scale µ = 1 TeV.

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Quark level and hadronic contributions to the electric dipole moment of charged leptons in the standard model

Cited by 5 publications

References 111 publications

CP violating effects in $^{210}$Fr and prospects for new physics beyond the Standard Model

CP violating effects in $^{210}$Fr and prospects for new physics beyond the Standard Model

Electron EDM in the complex two-Higgs doublet model

Contribution of the Weinberg-type Operator to atomic and nuclear electric dipole moments

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