Higgs boson decays, baryon number violation, and supersymmetry at the LHC

Abstract

Baryon number violating interactions could modify the signatures of supersymmetric models at the Large Hadron Collider. In this article we investigate the predictions for the Higgs mass and the Higgs decays in a simple extension of the minimal supersymmetric standard model where the local baryon and lepton numbers are spontaneously broken at the TeV scale. This theory predicts baryon number violation at the low scale which can change the current LHC bounds on the supersymmetric spectrum. Using the ATLAS and CMS bounds on the Higgs mass we show the constraints on the sfermion masses, and show the subsequent predictions for the radiative Higgs decays. We found that the Higgs decay into two photons is suppressed due to the existence of new light leptons. In this theory the stops can be very light in agreement with all experimental bounds and we make a brief discussion of the possible signals at the LHC.

Gauged baryon and lepton numbers in supersymmetry with a 125 GeV Higgs

“…and the couplings between the lightest neutral CP-even Higgs and exotic leptons/sleptons can also be found in literature [6]. …”

“…In the supersymmetric extension of the SM proposed in Ref. [5,6], the exotic superfields include the new quarksQ 4 ∼ (3, 2, 1/6, B 4 , 0), …”

“…Furthermore, we choose the masses for exotic leptons from Ref. [6]: m ν 4 = m ν 5 = 90 GeV , m e 4 = m e 5 = 100 GeV .…”

processes in the BLMSSM

“…The local gauge group of BLMSSM SU (3 [38,42,43] enlarges the SM. In the BLMSSM, the new quark superfieldŝ Q 4 ∼ (3,2,1/6,B 4 ,0),Û The exotic Higgs superfieldsΦ B ,φ B andΦ L ,φ L acquire nonzero vacuum expectation values (VEVs), then the exotic quarks and exotic leptons obtain masses.…”

The one-loop contributions to c(t) electric dipole moment in the CP-violating BLMSSM

“…The authors in Refs. [31][32][33] first proposed BLMSSM, where they studied some phenomena. At TeV scale, the local gauge symmetries of BLMSSM break spontaneously.…”