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Title: A theory of R(D*, D) anomaly with right-handed currents

Abstract

We present an ultraviolet complete theory for the R( D *) and R( D) anomaly in terms of a low mass W ± R gauge boson of a class of left-right symmetric models. These models, which are based on the gauge symmetry SU(3) c × SU(2) L × SU(2) R × U(1) B - L, utilize vector-like fermions to generate quark and lepton masses via a universal seesaw mechanism. A parity symmetric version as well as an asymmetric version are studied. A light sterile neutrino emerges naturally in this setup, which allows for new decay modes of B-meson via right-handed currents. We show that these models can explain R( D *) and R( D) anomaly while being consistent with LHC and LEP data as well as low energy flavor constraints arising from \( {K}_L-{K}_S,\kern0.5em {B}_{d,s}-{\overline{B}}_{d,s},\kern0.5em D-\overline{D} \) mixing, etc., but only for a limited range of the W R mass: 1.2 (1.8) TeV ≤ \( {M}_{W_R} \) ≤ 3 TeV for parity asymmetric (symmetric) Yukawa sectors. The ratio R( D)/ R( D *) is predicted to be ≃ 1.16, which is the same as in the Standard Model. The light sterile neutrinos predicted by the model may be relevantmore » for explaining the MiniBoone and LSND neutrino oscillation results. The parity symmetric version of the model provides a simple solution to the strong CP problem without relying on the axion. It also predicts an isospin singlet top partner with a mass M T = (1.5 - 2.5) TeV.« less

Authors:
 [1];  [2];  [3]
  1. Oklahoma State Univ., Stillwater, OK (United States)
  2. Texas A & M Univ., College Station, TX (United States)
  3. Univ. of Maryland, College Park, MD (United States)
Publication Date:
Research Org.:
Texas A & M Univ., College Station, TX (United States); Oklahoma State Univ., Stillwater, OK (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1611543
Grant/Contract Number:  
SC0010813; SC0016013
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Volume: 2019; Journal Issue: 1; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Physics; Beyond Standard Model; Gauge Symmetry; Heavy Quark Physics

Citation Formats

Babu, K. S., Dutta, Bhaskar, and Mohapatra, Rabindra N. A theory of R(D*, D) anomaly with right-handed currents. United States: N. p., 2019. Web. doi:10.1007/jhep01(2019)168.
Babu, K. S., Dutta, Bhaskar, & Mohapatra, Rabindra N. A theory of R(D*, D) anomaly with right-handed currents. United States. doi:10.1007/jhep01(2019)168.
Babu, K. S., Dutta, Bhaskar, and Mohapatra, Rabindra N. Tue . "A theory of R(D*, D) anomaly with right-handed currents". United States. doi:10.1007/jhep01(2019)168. https://www.osti.gov/servlets/purl/1611543.
@article{osti_1611543,
title = {A theory of R(D*, D) anomaly with right-handed currents},
author = {Babu, K. S. and Dutta, Bhaskar and Mohapatra, Rabindra N.},
abstractNote = {We present an ultraviolet complete theory for the R(D*) and R(D) anomaly in terms of a low mass W ± R gauge boson of a class of left-right symmetric models. These models, which are based on the gauge symmetry SU(3)c × SU(2)L × SU(2)R × U(1)B - L, utilize vector-like fermions to generate quark and lepton masses via a universal seesaw mechanism. A parity symmetric version as well as an asymmetric version are studied. A light sterile neutrino emerges naturally in this setup, which allows for new decay modes of B-meson via right-handed currents. We show that these models can explain R(D*) and R(D) anomaly while being consistent with LHC and LEP data as well as low energy flavor constraints arising from \( {K}_L-{K}_S,\kern0.5em {B}_{d,s}-{\overline{B}}_{d,s},\kern0.5em D-\overline{D} \) mixing, etc., but only for a limited range of the WR mass: 1.2 (1.8) TeV ≤ \( {M}_{W_R} \) ≤ 3 TeV for parity asymmetric (symmetric) Yukawa sectors. The ratio R(D)/R(D*) is predicted to be ≃ 1.16, which is the same as in the Standard Model. The light sterile neutrinos predicted by the model may be relevant for explaining the MiniBoone and LSND neutrino oscillation results. The parity symmetric version of the model provides a simple solution to the strong CP problem without relying on the axion. It also predicts an isospin singlet top partner with a mass MT = (1.5 - 2.5) TeV.},
doi = {10.1007/jhep01(2019)168},
journal = {Journal of High Energy Physics (Online)},
issn = {1029-8479},
number = 1,
volume = 2019,
place = {United States},
year = {2019},
month = {1}
}

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Cited by: 8 works
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