125 GeV Higgs decay with lepton flavor violation in the μ ν SSM

Abstract

Recently, the CMS and ATLAS collaborations have reported direct searches for the 125 GeV Higgs decay with lepton flavor violation, h → μτ. In this work, we analyze the signal of the lepton flavour violating (LFV) Higgs decay h → μτ in the μ from ν Supersymmetric Standard Model (μνSSM) with slepton flavor mixing. Simultaneously, we consider the constraints from the LFV decay τ → μγ, the muon anomalous magnetic dipole moment and the lightest Higgs mass around 125 GeV.

Contribution of heavy neutrinos to decay of standard-model-like Higgs boson $h\rightarrow μτ$ in a 3-3-1 model with additional gauge singlets

“…Branching ratio of LFVHDs, such as (h 0 1 → µτ, τ e), are stringent limited by the CMS Collaboration using data collected at a center-of-mass energy of 13TeV, as given Br(h 0 1 → µτ, τ e) ≤ O(10 −3 ). Some published results show that Br(h 0 1 → µτ ) can reach values of O(10 −4 ) in supersymmetric and non-supersymmetric models [8,9]. In fact, the main contributions to Br(h 0 1 → µτ ) come from heavy neutrinos.…”

Search for lepton flavour violating decays of the Higgs boson to μτ and eτ in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

“…These decays are forbidden in the SM but occur in many new physics scenarios. These include supersymmetric [5][6][7][8][9][10][11][12][13], composite Higgs [14,15], or Randall-Sundrum models [16][17][18], SM extensions with more than one Higgs boson doublet [19,20] or with flavour symmetries [21], and many other scenarios [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36]. The presence of LFV Higgs boson couplings would allow τ → µ and τ → e to proceed via a virtual Higgs boson [37,38].…”

Muon (g − 2) in the B-LSSM

“…Based on our previous analyses on the muon anomalous MDM [109][110][111][112][113][114], the Higgs boson mass, the Higgs boson decays andB → X s γ in the B-LSSM, the muon anomalous MDM depends on M E , µ, tan β; the Higgs boson mass depends on A t , Mt, tan β; the Higgs boson decay modes h → gg, ZZ, W W, bb, ττ depend on A t , A b , µ, Mt, Mb, tan β, M H ± (charged Higgs boson mass), the B meson rare decay processB → X s γ depends on M H ± , A t , Mt, tan β. In addition, the new parameters g B , g Y B , tan β can affect contributions to all these measured quantities.…”

“…Refs. [109][110][111][112][113][114] show that the theoretical predictions of the muon anomalous MDM and the transition magnetic moments of Majorana neutrinos in the B-LSSM depend on sleptons, neutralinos and charginos strongly. On the basis (ẽ L ,ẽ R ), the mass matrix of charged sleptons is given as:…”

“…where the concrete expressions of ∆a one−loop µ , ∆a two−loop µ can be found in our previous works [109][110][111].…”