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Title: R(D (*)) from W' and right-handed neutrinos

Abstract

Here we provide an ultraviolet (UV) complete model for the R(D (*)) anomalies, in which the additional contribution to semi-tauonic b → c transitions arises from decay to a right-handed sterile neutrino via exchange of a TeV-scale SU(2) L singlet W'. The model is based on an extension of the Standard Model (SM) hypercharge group, U(1) Y, to the SU(2) V × U(1)' gauge group, containing several pairs of heavy vector-like fermions. We present a comprehensive phenomenological survey of the model, ranging from the low-energy flavor physics, direct searches at the LHC, to neutrino physics and cosmology. We show that, while the W' and Z'-induced constraints are important, it is possible to find parameter space naturally consistent with all the available data. The sterile neutrino sector also offers rich phenomenology, including possibilities for measurable dark radiation, gamma ray signals, and displaced decays at colliders.

Authors:
 [1];  [2];  [3];  [4]
  1. Johannes Gutenberg-Univ. Mainz, Mainz (Germany); Univ. of Sarajevo, Sarajevo (Bosnia and Herzegovina)
  2. Univ. of Cincinnati, Cincinnati, OH (United States)
  3. Univ. of Cincinnati, Cincinnati, OH (United States); Univ. of Michigan, Ann Arbor, MI (United States)
  4. Univ. of Cincinnati, OH (United States). Dept. of Physics
Publication Date:
Research Org.:
Univ. of Cincinnati, Cincinnati, OH (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1499182
Grant/Contract Number:  
SC0011784
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: 2018; Journal Issue: 9; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Beyond Standard Model; Heavy Quark Physics; Neutrino Physics

Citation Formats

Greljo, Admir, Robinson, Dean J., Shakya, Bibhushan, and Zupan, Jure. R(D(*)) from W' and right-handed neutrinos. United States: N. p., 2018. Web. doi:10.1007/jhep09(2018)169.
Greljo, Admir, Robinson, Dean J., Shakya, Bibhushan, & Zupan, Jure. R(D(*)) from W' and right-handed neutrinos. United States. doi:10.1007/jhep09(2018)169.
Greljo, Admir, Robinson, Dean J., Shakya, Bibhushan, and Zupan, Jure. Fri . "R(D(*)) from W' and right-handed neutrinos". United States. doi:10.1007/jhep09(2018)169. https://www.osti.gov/servlets/purl/1499182.
@article{osti_1499182,
title = {R(D(*)) from W' and right-handed neutrinos},
author = {Greljo, Admir and Robinson, Dean J. and Shakya, Bibhushan and Zupan, Jure},
abstractNote = {Here we provide an ultraviolet (UV) complete model for the R(D(*)) anomalies, in which the additional contribution to semi-tauonic b → c transitions arises from decay to a right-handed sterile neutrino via exchange of a TeV-scale SU(2)L singlet W'. The model is based on an extension of the Standard Model (SM) hypercharge group, U(1)Y, to the SU(2)V × U(1)' gauge group, containing several pairs of heavy vector-like fermions. We present a comprehensive phenomenological survey of the model, ranging from the low-energy flavor physics, direct searches at the LHC, to neutrino physics and cosmology. We show that, while the W' and Z'-induced constraints are important, it is possible to find parameter space naturally consistent with all the available data. The sterile neutrino sector also offers rich phenomenology, including possibilities for measurable dark radiation, gamma ray signals, and displaced decays at colliders.},
doi = {10.1007/jhep09(2018)169},
journal = {Journal of High Energy Physics (Online)},
number = 9,
volume = 2018,
place = {United States},
year = {2018},
month = {9}
}

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