Resolving the (g−2)μ and B anomalies with leptoquarks and a dark Higgs boson

2019/08/31 by Alakabha Datta, Jonathan L. Feng, Saeed Kamali +1
Physics and Astronomy · #Coupling (piping) #Dark Matter and Cosmic Phenomena #Higgs boson #Muon #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph

paper · pdf · doi:10.1103/physrevd.101.035010

published as Phys. Rev. D 101, 035010 (2020) · 25 pages, 7 figures. Matches published version

openalex created_date 2019/08/29 · openalex publication_date 2020/02/07 · arxiv created 2020/02/10 · arxiv updated 2020/02/12 · openalex updated_date 2026/08/06

Abstract

At present, there are outstanding discrepancies between standard model predictions and measurements of the muon's g\ensuremath-2 and several B-meson properties. We resolve these anomalies by considering a two-Higgs-doublet model extended to include leptoquarks and a dark Higgs boson S. The leptoquarks modify B-meson decays and also induce an S\ensuremathγ\ensuremathγ coupling, which contributes to the muon's g\ensuremath-2 through a Barr-Zee diagram. We show that, for TeV-scale leptoquarks and dark Higgs boson masses m_S\ensuremath∼10--200 MeV, a consistent resolution to all of the anomalies exists. The model predicts interesting new decays, such as B\ensuremath→K^(*)e⁺e^\ensuremath-, B\ensuremath→K^(*)\ensuremathγ\ensuremathγ, K\ensuremath→\ensuremathπ\ensuremathγ\ensuremathγ, and h\ensuremath→\ensuremathγ\ensuremathγ\ensuremathγ\ensuremathγ, with branching fractions not far below current bounds.

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