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With or without U(2)? Probing non-standard flavor and helicity structures in semileptonic B decays


Fuentes-Martín, Javier; Isidori, Gino; Pagès, Julie; Yamamoto, Kei (2020). With or without U(2)? Probing non-standard flavor and helicity structures in semileptonic B decays. Physics Letters B, 800:135080.

Abstract

Motivated by the recent hints of lepton flavor universality violation observed in semileptonic B decays, we analyze how to test flavor and helicity structures of the corresponding amplitudes in view of future data. We show that the general assumption that such non-standard effects are controlled by a flavor symmetry, minimally broken as in the Standard Model Yukawa sector, leads to stringent predictions on leptonic and semileptonic B decays.

Abstract

Motivated by the recent hints of lepton flavor universality violation observed in semileptonic B decays, we analyze how to test flavor and helicity structures of the corresponding amplitudes in view of future data. We show that the general assumption that such non-standard effects are controlled by a flavor symmetry, minimally broken as in the Standard Model Yukawa sector, leads to stringent predictions on leptonic and semileptonic B decays.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Nuclear and High Energy Physics
Uncontrolled Keywords:Nuclear and High Energy Physics
Language:English
Date:1 January 2020
Deposited On:08 Jan 2020 11:34
Last Modified:04 Jun 2024 03:31
Publisher:Elsevier
ISSN:0370-2693
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1016/j.physletb.2019.135080
Project Information:
  • : FunderH2020
  • : Grant ID833280
  • : Project TitleFLAY - Flavor Anomalies and the origin of the Yukawa couplings
  • Content: Published Version
  • Licence: Creative Commons: Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)