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

Journal Article · · Physical Review D

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.

Research Organization:
Univ. of Hawaii, Honolulu, HI (United States); Texas A & M Univ., College Station, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC); University of Nebraska-Lincoln; National Science Foundation (NSF)
Grant/Contract Number:
SC0010813; SC0010504; PHY-1820891
OSTI ID:
1839507
Alternate ID(s):
OSTI ID: 1980001
Journal Information:
Physical Review D, Journal Name: Physical Review D Vol. 105 Journal Issue: 1; ISSN 2470-0010
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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