Search for electric dipole moments

Kirch, K.; Schmidt-Wellenburg, P.

doi:10.1051/epjconf/202023401007

Cited by 11 publications

(9 citation statements)

References 48 publications

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“…These estimates of SM-CKM and SM-θ EDMs for sub-atomic particles, have also been used in Refs. [17,67,68]. A statistically significant measurement in any one species would not help us understand the origins of its EDM.…”

Section: Discussionmentioning

confidence: 98%

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Estimation of CP violating EDMs from known mechanisms in the SM

Mohanmurthy¹,

Winger²

2021

Proceedings of 40th International Conference on High Energy Physics — PoS(ICHEP2020)

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New sources of CP violation, beyond the known sources in the standard model (SM), are required to explain the baryon asymmetry of the universe. Measurement of a non-zero permanent electric dipole moment (EDM) in fundamental particles, such as in an electron or a neutron, or in nuclei or atoms, can help us gain a handle on the sources of CP violation, both in the SM and beyond. Multiple mechanisms within the SM can generate CP violating EDMs, viz. through the CKM matrix in the weak sector or through the QCDθ parameter in the strong sector. We will estimate the maximum possible EDMs of leptons, certain baryons, select atoms and molecules in the (CKM θ ) framework, assuming that the EDM wholly originates from either of the two SM mechanisms, independently. These estimates have been presented in light of the current experimental upper limits on the EDMs, in the following systems -leptons: e

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Section: Discussionmentioning

confidence: 98%

“…More recently, Ref. [17] has updated the limit to d (90% C.L.) τ − < 2.6 × 10 −18 e•cm using the above method.…”

Section: Edm Of Sub-atomic Particlesmentioning

confidence: 99%

Estimation of CP violating EDMs from known mechanisms in the SM

Mohanmurthy¹,

Winger²

2021

Proceedings of 40th International Conference on High Energy Physics — PoS(ICHEP2020)

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“…The Paul Scherrer Institut (PSI) muEDM experiment is projected to have a sensitivity within the ballpark of 5 × 10 −23 e cm [64,65]. Similarly, the FNAL Muon g−2 experiment aims to probe muon EDMs of order 10 −21 e cm [66].…”

Section: Interplay Of Corrections To the Muon Mass And Muon Dipole Mo...mentioning

confidence: 99%

Reflecting on chirality: CP-violating extensions of the single scalar-leptoquark solutions for the $(g-2)_{e,μ}$ puzzles and their implications for lepton EDMs

Bigaran,

Volkas

2021

Preprint

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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), R2 ∼ (3, 2, 7/6) and S1 ∼ (3, 1, −1/3). We consider the case in which the electron and muon sectors are decoupled, and leptoquark couplings are assigned complex values. Adopting the coupling ansatz that the electron dipole operator is generated by charm-containing loops, and muon dipole operator by top-containing loops, we find that both minimal leptoquark models remain viable solutions for reconciling anomalies in the muon and electron MDMs, accounting for either of the two current (disparate) electron MDM results from Cs and Rb interferometry experiments. We also examine the correlated corrections to the muon and electron masses generated by these models, and argue that to minimise fine-tuning this introduces an upper bound on viable leptoquark (φ) masses, m φ < O(4) TeV. Similar arguments allow us to make a prediction for the upper bound of the muon EDM generated by these models, |dµ| < O(10 −22 ) e cm, which could be within reach of upcoming experimental programs, including Muon g−2 at Fermilab (FNAL), and muEDM at Paul Scherrer Institut (PSI).

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“…So far, these quantities have not been measured by PSI experiments. However, future involvement, in particular for the EDM, is being considered [77].…”

Section: Vl L νmentioning

confidence: 99%