125 GeV Higgs boson decay to a pair of muons in the $\mu \nu$SSM

Abstract

Recently, the ATLAS and CMS Collaborations measured the 125 GeV Higgs boson decay to a pair of muons $h\to \mu \bar{\mu }$, which reported the signal strength relative to the standard model (SM) prediction is $1.2\pm 0.6$ and $1.19_{-0.39-0.14}^{+0.40+0.15}$, respectively. In this work, we investigate the 125 GeV Higgs boson decay $h\to \mu \bar{\mu }$ at one-loop level in the $\mu$ from $\nu$ Supersymmetric Standard Model ($\mu \nu$SSM). Compared to the SM prediction, the decay width of $h\to \mu \bar{\mu }$ in the $\mu \nu$SSM can boost up about 10\%, considering the constraint from the muon anomalous magnetic dipole moment.

Comments: 11 pages, 3 figures. arXiv admin note: substantial text overlap with arXiv:2002.04370