Electric dipole moments as probes of new physics

Pospelov, Maxim; Ritz, Adam

doi:10.1016/j.aop.2005.04.002

Cited by 992 publications

(1,450 citation statements)

References 157 publications

(240 reference statements)

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“…The complex phase of the Cabibbo-KobayashiMaskawa (CKM) matrix of the Standard Model (SM) generates EDMs orders of magnitude smaller [1][2][3][4] than the sensitivities of current and planned experiments. Therefore, EDMs serve as ideal probes for flavor-diagonal CP violation -with a minimal SM backgroundfrom e.g.…”

Section: Introductionmentioning

confidence: 99%

Nuclear electric dipole moments in chiral effective field theory

Bsaisou

Vries

Hanhart

et al. 2015

J. High Energ. Phys.

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We provide a consistent and complete calculation of the electric dipole moments of the deuteron, helion, and triton in the framework of chiral effective field theory. The CP-conserving and CP-violating interactions are treated on equal footing and we consider CP-violating one-, two-, and three-nucleon operators up to next-to-leading-order in the chiral power counting. In particular, we calculate for the first time EDM contributions induced by the CP-violating three-pion operator. We find that effects of CP-violating nucleon-nucleon contact interactions are larger than those found in previous studies based on phenomenological models for the CP-conserving nucleon-nucleon interactions. Our results which apply to any model of CP violation in the hadronic sector can be used to test various scenarios of CP violation. As examples, we study the implications of our results on the QCD θ-term and the minimal left-right symmetric model.

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Section: Introductionmentioning

confidence: 99%

Nuclear electric dipole moments in chiral effective field theory

Bsaisou

Vries

Hanhart

et al. 2015

J. High Energ. Phys.

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“…However, they could be significantly smaller, when parameters encoding / P/ T beyond the Standard Model are small, or significantly larger, since f q is unnaturally small; for discussion and examples, see for instance Refs. [2,15].…”

Section: P -And T -Violating Chiral Lagrangianmentioning

confidence: 99%

Electric dipole moments of light nuclei from chiral effective field theory

et al. 2011

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We set up the framework for the calculation of electric dipole moments (EDMs) of light nuclei using the systematic expansion provided by chiral effective field theory (EFT). We take into account parity (P ) and time-reversal (T ) violation which, at the quark-gluon level, originates from the QCD vacuum angle and dimension-six operators capturing physics beyond the Standard Model. We argue that EDMs of light nuclei can be expressed in terms of six low-energy constants that appear in the P -and T -violating nuclear potential and electric current. As examples, we calculate the EDMs of the deuteron, the triton, and 3 He in leading order in the EFT expansion.

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“…Explicitly, for the neutron EDM, we use the estimate [12,18] d n (θ) ≃ 2.5 × 10 −16θ e · cm. where C I Hg = 1.8, C II Hg = 1.0, C III Hg = 1.4 and C IV Hg = 9.5 × 10 −2 , with [12,45] …”

Section: Jhep02(2011)045mentioning

confidence: 99%

Maximal electric dipole moments of nuclei with enhanced Schiff moments

Ellis

Lee

Pilaftsis

2011

J. High Energ. Phys.

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Abstract:The electric dipole moments (EDMs) of heavy nuclei, such as 199 Hg, 225 Ra and 211 Rn, can be enhanced by the Schiff moments induced by the presence of nearby parity-doublet states. Working within the framework of the maximally CP-violating and minimally flavour-violating (MCPMFV) version of the MSSM, we discuss the maximal values that such EDMs might attain, given the existing experimental constraints on the Thallium, neutron and Mercury EDMs. The maximal EDM values of the heavy nuclei are obtained with the help of a differential-geometrical approach proposed recently that enables the maxima of new CP-violating observables to be calculated exactly in the linear approximation. In the case of 225 Ra, we find that its EDM may be as large as 6 to 50 × 10 −27 e · cm.

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Electric dipole moments as probes of new physics

Cited by 992 publications

References 157 publications

Nuclear electric dipole moments in chiral effective field theory

Nuclear electric dipole moments in chiral effective field theory

Electric dipole moments of light nuclei from chiral effective field theory

Maximal electric dipole moments of nuclei with enhanced Schiff moments

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