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Title: Explaining g μ 2 and R K ( * ) using the light mediators of U ( 1 ) T 3 R

Abstract

Scenarios in which right-handed light Standard Model fermions couple to a new gauge group, U(1)T3R, can naturally generate a sub-GeV dark matter candidate. But such models necessarily have large couplings to the Standard Model, generally yielding tight experimental constraints. We show that the contributions to gu-2 from the dark photon and dark Higgs largely cancel out in the narrow window where all the experimental constraints are satisfied, leaving a net correction that is consistent with recent measurements from Fermilab. These models inherently violate lepton universality, and UV completions of these models can include quark flavor violation that can explain RK(*) anomalies as observed at the LHCb experiment after satisfying constraints on Br(Bs → μ+μ-) nd various other constraints in the allowed parameter space of the model. This scenario can be probed by FASER, SeaQuest, SHiP, LHCb, Belle, etc.

Authors:
; ORCiD logo; ;
Publication Date:
Research Org.:
Univ. of Hawaii, Honolulu, HI (United States); Texas A & M Univ., College Station, TX (United States)
Sponsoring Org.:
USDOE Office of Science (SC); University of Nebraska-Lincoln; National Science Foundation (NSF)
OSTI Identifier:
1839507
Alternate Identifier(s):
OSTI ID: 1980001
Grant/Contract Number:  
SC0010813; SC0010504; PHY-1820891
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 105 Journal Issue: 1; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; electroweak radiative corrections; flavor changing neutral currents; particle dark matter; mesons; magnetic moment; spontaneous symmetry breaking

Citation Formats

Dutta, Bhaskar, Ghosh, Sumit, Huang, Peisi, and Kumar, Jason. Explaining g μ − 2 and R K ( * ) using the light mediators of U ( 1 ) T 3 R. United States: N. p., 2022. Web. doi:10.1103/PhysRevD.105.015011.
Dutta, Bhaskar, Ghosh, Sumit, Huang, Peisi, & Kumar, Jason. Explaining g μ − 2 and R K ( * ) using the light mediators of U ( 1 ) T 3 R. United States. https://doi.org/10.1103/PhysRevD.105.015011
Dutta, Bhaskar, Ghosh, Sumit, Huang, Peisi, and Kumar, Jason. Tue . "Explaining g μ − 2 and R K ( * ) using the light mediators of U ( 1 ) T 3 R". United States. https://doi.org/10.1103/PhysRevD.105.015011.
@article{osti_1839507,
title = {Explaining g μ − 2 and R K ( * ) using the light mediators of U ( 1 ) T 3 R},
author = {Dutta, Bhaskar and Ghosh, Sumit and Huang, Peisi and Kumar, Jason},
abstractNote = {Scenarios in which right-handed light Standard Model fermions couple to a new gauge group, U(1)T3R, can naturally generate a sub-GeV dark matter candidate. But such models necessarily have large couplings to the Standard Model, generally yielding tight experimental constraints. We show that the contributions to gu-2 from the dark photon and dark Higgs largely cancel out in the narrow window where all the experimental constraints are satisfied, leaving a net correction that is consistent with recent measurements from Fermilab. These models inherently violate lepton universality, and UV completions of these models can include quark flavor violation that can explain RK(*) anomalies as observed at the LHCb experiment after satisfying constraints on Br(Bs → μ+μ-) nd various other constraints in the allowed parameter space of the model. This scenario can be probed by FASER, SeaQuest, SHiP, LHCb, Belle, etc.},
doi = {10.1103/PhysRevD.105.015011},
journal = {Physical Review D},
number = 1,
volume = 105,
place = {United States},
year = {Tue Jan 11 00:00:00 EST 2022},
month = {Tue Jan 11 00:00:00 EST 2022}
}

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