Lepton universality violation with lepton flavor conservation in B-meson decays
Abstract
Anomalies in semileptonic B-meson decays present interesting patterns that might be revealing the shape of the new physics to come. Under the assumption that neutrino and charged lepton mass terms are the only sources of flavor violation and given the hierarchy between the two, we find that charged lepton universality violation without charged lepton flavor violation naturally arises. This can account for a deficit of B+ → K+ μμ over B+ → K+ ee decays with new physics coupled predominantly to muons and a new physics scale of a few TeV. A generic prediction of this scenario is a large enhacement of tauonic B decay rates that, in particular, could accommodate an excess in B → D (*) τ ν. For the most part, the study is carried out in an effective field theory framework with an underlying SU(2)L × U(1) Y symmetry that emphasizes the model-independent correlations between low- and high-energy observables. As an example, a connection between B-decays and top physics is pointed out. To complement the discussion, all possible (spin 0 and 1) leptoquark models are matched to the low-energy field theory so that the effective analysis can be used to survey these candidates for new physics.
- Authors:
-
- University of California, San Diego, La Jolla, CA (United States). Department of Physics
- University of California, San Diego, La Jolla, CA (United States). Department of Physics; Johannes Gutenberg-Universität Mainz (Germany). PRISMA Cluster of Excellence Institut für Kernphysik
- Publication Date:
- Research Org.:
- University of California, San Diego, La Jolla, CA (United States). Department of Physics
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1434590
- Grant/Contract Number:
- SC0009919; SC000991
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2015; Journal Issue: 10; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Rare Decays; Beyond Standard Model; B-Physics
Citation Formats
Alonso, R., Grinstein, B., and Camalich, J. Martin. Lepton universality violation with lepton flavor conservation in B-meson decays. United States: N. p., 2015.
Web. doi:10.1007/JHEP10(2015)184.
Alonso, R., Grinstein, B., & Camalich, J. Martin. Lepton universality violation with lepton flavor conservation in B-meson decays. United States. https://doi.org/10.1007/JHEP10(2015)184
Alonso, R., Grinstein, B., and Camalich, J. Martin. Wed .
"Lepton universality violation with lepton flavor conservation in B-meson decays". United States. https://doi.org/10.1007/JHEP10(2015)184. https://www.osti.gov/servlets/purl/1434590.
@article{osti_1434590,
title = {Lepton universality violation with lepton flavor conservation in B-meson decays},
author = {Alonso, R. and Grinstein, B. and Camalich, J. Martin},
abstractNote = {Anomalies in semileptonic B-meson decays present interesting patterns that might be revealing the shape of the new physics to come. Under the assumption that neutrino and charged lepton mass terms are the only sources of flavor violation and given the hierarchy between the two, we find that charged lepton universality violation without charged lepton flavor violation naturally arises. This can account for a deficit of B+ → K+ μμ over B+ → K+ ee decays with new physics coupled predominantly to muons and a new physics scale of a few TeV. A generic prediction of this scenario is a large enhacement of tauonic B decay rates that, in particular, could accommodate an excess in B → D (*) τ ν. For the most part, the study is carried out in an effective field theory framework with an underlying SU(2)L × U(1) Y symmetry that emphasizes the model-independent correlations between low- and high-energy observables. As an example, a connection between B-decays and top physics is pointed out. To complement the discussion, all possible (spin 0 and 1) leptoquark models are matched to the low-energy field theory so that the effective analysis can be used to survey these candidates for new physics.},
doi = {10.1007/JHEP10(2015)184},
journal = {Journal of High Energy Physics (Online)},
number = 10,
volume = 2015,
place = {United States},
year = {2015},
month = {10}
}
Web of Science
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text, January 2018
- Blanke, Monika; Crivellin, Andreas
- Karlsruhe
Importance of Loop Effects in Explaining the Accumulated Evidence for New Physics in B Decays with a Vector Leptoquark
text, January 2019
- Crivellin, Andreas; Greub, Christoph; Saturnino, Francesco
- American Physical Society
Direct determination of Wilson coefficients using $B^0\to K^{*0}\mu^+\mu^-$ decays
text, January 2017
- Hurth, T.; Langenbruch, Christoph; Mahmoudi, F.
- RWTH Aachen University
A perturbed lepton-specific two-Higgs-doublet model facing experimental hints for physics beyond the Standard Model
text, January 2015
- Crivellin, Andreas; Heeck, Julian; Stoffer, Peter
- arXiv
Revisiting Lepton Flavour Universality in B Decays
text, January 2016
- Feruglio, Ferruccio; Paradisi, Paride; Pattori, Andrea
- arXiv
Flavour anomalies after the $R_{K^*}$ measurement
text, January 2017
- D'Amico, Guido; Nardecchia, Marco; Panci, Paolo
- arXiv
Gauge-invariant implications of the LHCb measurements on Lepton-Flavour Non-Universality
text, January 2017
- Celis, Alejandro; Fuentes-Martin, Javier; Vicente, Avelino
- arXiv
Flavor Non-universality Gauge Interactions and Anomalies in B-Meson Decays
text, January 2017
- Tang, Yong; Wu, Yue-Liang
- arXiv
Revisiting Minimal Lepton Flavour Violation in the Light of Leptonic CP Violation
text, January 2017
- Dinh, D. N.; Merlo, L.; Petcov, S. T.
- arXiv
Importance of Loop Effects in Explaining the Accumulated Evidence for New Physics in B Decays with a Vector Leptoquark
text, January 2018
- Crivellin, Andreas; Greub, Christoph; Müller, Dario
- arXiv
Review of Lepton Universality tests in B decays
text, January 2018
- Bifani, Simone; Descotes-Genon, Sebastien; Vidal, Antonio Romero
- arXiv
Constraints on scalar leptoquarks from lepton and kaon physics
text, January 2019
- Mandal, Rusa; Pich, Antonio
- arXiv
Gauge leptoquark as the origin of B-physics anomalies
text, January 2017
- Di Luzio, Luca; Greljo, Admir; Nardecchia, Marco
- American Physical Society
B-physics anomalies : a guide to combined explanations
text, January 2017
- Buttazzo, Dario; Greljo, Admir; Isidori, Gino
- Springer