Implications of Higgs to diphoton decay rate in the bilinear R-parity violating supersymmetric model

Abstract

The Large Hadron Collider has recently discovered a Higgs-like particle having a mass around 125 GeV and also indicated that there is an enhancement in the Higgs to diphoton decay rate as compared to that in the standard model. We have studied implications of these discoveries in the bilinear R-parity violating supersymmetric model, whose main motivation is to explain the non-zero masses for neutrinos. The R-parity violating parameters in this model are $\epsilon$ and $b_{\epsilon }$, and these parameters determine the scale of neutrino masses. If the enhancement in the Higgs to diphoton decay rate is true, then we have found $ε\gapprox 0.01$ GeV and $b_{\epsilon }\sim$ 1 GeV${}^2$ in order to be compatible with the neutrino oscillation data. Also, in the above mentioned analysis, we can determine the soft masses of sleptons ($m_L$) and CP-odd Higgs boson mass ($m_A$). We have estimated that $m_L\gapprox$ 300 GeV and $m_A\gapprox$ 700 GeV. We have also commented on the allowed values of $\epsilon$ and $b_{\epsilon }$, in case there is no enhancement in the Higgs to diphoton decay rate. Finally, we present a model to explain the smallness of $\epsilon$ and $b_{\epsilon }$.

23 pages, 10 eps figures, minor changes, new references added, accepted by Physical Review D

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• Pair production of 125 GeV Higgs boson in the SM extension with color-octet scalars at the LHC
• R-Parity Violating Supersymmetry and the 125 GeV Higgs signals
• Study on the global minimum and $H\to \gamma \gamma$ in the Dirac scotogenic model