Reevaluation of heavy-fermion-induced electron EDM at three loops

Ema, Yohei; Gao, Ting; Pospelov, Maxim

doi:10.1016/j.physletb.2022.137496

Cited by 8 publications

(3 citation statements)

References 32 publications

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“…We use the FIRE6 [34] package to perform the integration-by-parts reduction and use the analytical expressions of master integrals in [33]. Divergences and gauge dependencies in the two structures cancel out separately and leave with us a finite result [35]:…”

Section: Electron Edm Induced At Three-loopmentioning

confidence: 99%

See 1 more Smart Citation

Theory of electric dipole moments

Ema,

Gao,

Pospelov

2024

Proceedings of 8th Symposium on Prospects in the Physics of Discrete Symmetries — PoS(DISCRETE2022)

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Section: Electron Edm Induced At Three-loopmentioning

confidence: 99%

“…By combining the results of and obtained above, we derive an indirect constraint on muon EDM from the paramagnetic EDM experiment [27,35]:…”

Section: Constraints On Muon Edmmentioning

confidence: 99%

Theory of electric dipole moments

Ema,

Gao,

Pospelov

2024

Proceedings of 8th Symposium on Prospects in the Physics of Discrete Symmetries — PoS(DISCRETE2022)

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“…A non-zero value of the eEDM would constitute a violation of time-reversal (T)-symmetry and CP-symmetry, where C denotes charge conjugation and P parity. The current bounds for the eEDM already put tight constraints on theories that extend the Standard Model [5,6].…”

Section: Introductionmentioning

confidence: 99%

Manipulating a beam of barium fluoride molecules using an electrostatic hexapole

Touwen,

van Hofslot,

Qualm

et al. 2024

New J. Phys.

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An electrostatic hexapole lens is used to manipulate the transverse properties of a beam of barium fluoride molecules from a cryogenic buffer gas source. The spatial distribution of the beam is measured by recording state-selective laser-induced fluorescence on an emccd camera, providing insight into the intensity and transverse position spread of the molecular beam. Although the high mass and unfavorable Stark shift of barium fluoride pose a considerable challenge, the number of molecules in the low-field seeking component of the N = 1 state that pass a 4 mm diameter aperture 712 mm behind the source is increased by a factor of 12. Furthermore, it is demonstrated that the molecular beam can be displaced by up to ±5 mm by moving the hexapole lens. Our measurements agree well with numerical trajectory simulations. We discuss how electrostatic lenses may be used to increase the sensitivity of beam experiments such as the search for the electric dipole moment of the electron.

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Flavor-changing light bosons with accidental longevity

Ema

Liu

Lyu

et al. 2023

J. High Energ. Phys.

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We consider a model with a complex scalar field that couples to (e, μ) or (μ, τ) within the “longevity” window: $$ \left[|{m}_{l_1}-{m}_{l_2}|,{m}_{l_1}+{m}_{l_2}\right] $$ m l 1 − m l 2 m l 1 + m l 2 in which l1 and l2 are the two different charged leptons. Within such a mass window, even a relatively large coupling (e.g. of the size commensurate with the current accuracy/discrepancy in the muon g − 2 experiment) leads to long lifetimes and macroscopic propagation distance between production and decay points. We propose to exploit several existing neutrino experiments and one future experiment to probe the parameter space of this model. For the μ − e sector, we exploit the muonium decay branching ratio and the production and decay sequence at the LSND experiment, excluding the parametric region suggested by gμ − 2 anomaly. For the τ − μ sector, we analyze three main production mechanisms of scalars at beam dump experiments: the Drell-Yan process, the heavy meson decay, and the muon scattering. We explore the constraints from the past CHARM and NuTeV experiments, and evaluate sensitivity for the proposed beam dump experiment, SHiP. The latter can thoroughly probe the parameter space relevant for the gμ− 2 anomaly.

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Reevaluation of heavy-fermion-induced electron EDM at three loops

Cited by 8 publications

References 32 publications

Theory of electric dipole moments

Theory of electric dipole moments

Manipulating a beam of barium fluoride molecules using an electrostatic hexapole

Flavor-changing light bosons with accidental longevity

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