b → sℓ+ℓ− transitions in two-Higgs-doublet models

Crivellin, Andreas; Müller, Dario; Wiegand, Peter Christoph (2019). b → sℓ+ℓ− transitions in two-Higgs-doublet models. Journal of High Energy Physics, 2019(6), p. 119. Springer 10.1007/JHEP06(2019)119

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In this article we study b → sμ⁺μ⁻ transitions and possible correlations with the anomalous magnetic moment of the muon (aμ) within two-Higgs-doublet models with generic Yukawa couplings, including the possibility of right-handed neutrinos. We perform the matching on the relevant effective Hamiltonian and calculate the leading one-loop effects for b → sll(′), b → sγ, ∆B = ∆S = 2, b → sνν ̄ and l → l′γ transitions in a general Rξ gauge. Concerning the phenomenology, we find that an explanation of the hints for new physics in b → sμ⁺μ⁻ data is possible once right-handed neutrinos are included. If lepton flavour violating couplings are allowed, one can account for the discrepancy in aμ as well. However, only a small portion of parameter space gives a good fit to b → sμ⁺μ⁻ data and the current bound on h → τμ requires the mixing between the neutral Higgses to be very small if one aims at an explanation of aμ.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Crivellin, Andreas; Müller, Dario and Wiegand, Peter Christoph

Subjects:

500 Science > 530 Physics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

31 Jul 2019 15:59

Last Modified:

24 Oct 2019 16:31

Publisher DOI:

10.1007/JHEP06(2019)119

ArXiv ID:

1903.10440

BORIS DOI:

10.7892/boris.132253

URI:

https://boris.unibe.ch/id/eprint/132253

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