Lepton non-universality in B decays and fermion mass structure

Grinstein, B.; Pokorski, S.; Ross, G. G.

doi:10.1007/jhep12(2018)079

Title: Lepton non-universality in B decays and fermion mass structure

Journal Article · Thu Dec 13 00:00:00 EST 2018 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/jhep12(2018)079· OSTI ID:1611234

Grinstein, B. ^[1]; Pokorski, S. ^[2]; Ross, G. G. ^[3]

Univ. of California, San Diego, CA (United States)
Univ. of Warsaw (Poland)
Univ. of Oxford (United Kingdom)

We consider the possibility that the neutral-current B anomalies are due to radiative corrections generated by Yukawa interactions of quarks and leptons with new vector-like quark and lepton electroweak doublets and new Standard Model singlet scalars. We show that the restricted interactions needed can result from an underlying Abelian family symmetry and that the same symmetry can give rise to an acceptable pattern of quark and charged lepton masses and mixings, providing a bridge between the non-universality observed in the B-sector and that of the fermion mass matrices. We construct two simple models, one with a single singlet scalar in which the flavour changing comes from quark and lepton mixing and one with an additional scalar in which the flavour changing can come from both fermion and scalar mixing. We show that for the case the new quarks are much heavier than the new leptons and scalars the B anomalies can be due to box diagrams with couplings in the perturbative regime consistent with the bounds coming from $$B_8-\overline{B}_8, K-\overline{K}$$ and $$D-\overline{D}$$ mixing as well as other lepton family number violating processes. The new states can be dark matter candidates and, in the two scalar model with a light scalar of O(60) GeV and vector-like lepton of O(100) GeV, there can be a simultaneous explanation of the B-anomalies, the muon anomalous magnetic moment and the dark matter abundance.

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Research Organization:: Univ. of California, San Diego, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC); National Science Centre, Poland

Grant/Contract Number:: SC0009919; DEC-2015/18/M/ST2/00054; DEC-2015/19/B/ST2/02848; DEC-2016/23/G/ST2/04301

OSTI ID:: 1611234

Journal Information:: Journal of High Energy Physics (Online), Vol. 2018, Issue 12; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 25 works

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Cited By (14)

Anomaly free Froggatt-Nielsen models of flavor Smolkovič, Aleks; Tammaro, Michele; Zupan, Jure Journal of High Energy Physics, Vol. 2019, Issue 10 https://doi.org/10.1007/jhep10(2019)188	journal	October 2019
Phenomenology of an extended IDM with loop-generated fermion mass hierarchies Cárcamo Hernández, A. E.; Kovalenko, Sergey; Pasechnik, Roman The European Physical Journal C, Vol. 79, Issue 7 https://doi.org/10.1140/epjc/s10052-019-7101-0	journal	July 2019
Finite Family Groups for Fermionic and Leptoquark Mixing Patterns Bernigaud, Jordan; De Medeiros Varzielas, Ivo; Talbert, Jim Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2019-02662	text	January 2019
B anomalies and dark matter: a complex connection Cerdeño, D. G.; Cheek, A.; Martín-Ramiro, P. The European Physical Journal C, Vol. 79, Issue 6 https://doi.org/10.1140/epjc/s10052-019-6979-x	journal	June 2019
Simplified Models of Flavourful Leptoquarks Varzielas, Ivo De Medeiros; Talbert, Jim Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2019-00973	text	January 2019
Simplified models of flavourful leptoquarks de Medeiros Varzielas, Ivo; Talbert, Jim The European Physical Journal C, Vol. 79, Issue 6 https://doi.org/10.1140/epjc/s10052-019-7047-2	journal	June 2019
New Physics in $${\varvec{b \rightarrow s \ell ^+ \ell ^-}}$$ b → s ℓ + ℓ - confronts new data on lepton universality Ciuchini, Marco; Coutinho, António M.; Fedele, Marco The European Physical Journal C, Vol. 79, Issue 8 https://doi.org/10.1140/epjc/s10052-019-7210-9	journal	August 2019
Finite family groups for fermionic and leptoquark mixing patterns Bernigaud, Jordan; De Medeiros Varzielas, Ivo; Talbert, Jim Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2020-00736	text	January 2020
Simplified models of flavourful leptoquarks De Medeiros Varzielas, Ivo; Talbert, Jim Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2019-02907	text	January 2019
B anomalies and dark matter: a complex connection Cerdeno, D. G.; Cheek, A.; Martin-Ramiro, P. arXiv https://doi.org/10.48550/arxiv.1902.01789	text	January 2019
Finite Family Groups for Fermionic and Leptoquark Mixing Patterns Bernigaud, Jordan; Varzielas, Ivo de Medeiros; Talbert, Jim arXiv https://doi.org/10.48550/arxiv.1906.11270	text	January 2019
New Physics in $b \to s \ell^+ \ell^-$ confronts new data on Lepton Universality Ciuchini, Marco; Coutinho, António M.; Fedele, Marco arXiv https://doi.org/10.48550/arxiv.1903.09632	text	January 2019
Complete Vector-like Fourth Family and new $\mathrm{U(1)^\prime}$ for Muon Anomalies Kawamura, Junichiro; Raby, Stuart; Trautner, Andreas arXiv https://doi.org/10.48550/arxiv.1906.11297	text	January 2019
Systematic approach to $B$-physics anomalies and $t$-channel dark matter Arcadi, Giorgio; Calibbi, Lorenzo; Fedele, Marco arXiv https://doi.org/10.48550/arxiv.2103.09835	text	January 2021

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