Constraints on TeV scale Majorana neutrino phenomenology from the Vacuum Stability of the Higgs

Joydeep Chakrabortty; Moumita Das; Subhendra Mohanty

doi:10.1142/S0217732313500326

paper

Constraints on TeV scale Majorana neutrino phenomenology from the Vacuum Stability of the Higgs

arXiv:1207.2027 · doi:10.1142/S0217732313500326

Abstract

The vacuum stability condition of the Standard Model Higgs potential with mass in the range of 124-127 GeV puts an upper bound on the Dirac mass of the neutrinos. We study this constraint with the right-handed neutrino masses upto TeV scale. The heavy neutrinos contribute to $Δ L = 2$ processes like neutrinoless double beta decay and same-sign-dilepton production in the colliders. The vacuum stability criterion also restricts the light-heavy neutrino mixing and constrains the branching ratio of lepton flavour violating process, like $μ \to e γ$ mediated by the heavy neutrinos. We show that neutrinoless double beta decay with a lifetime $\sim 1 0^{25}$ years can be observed if the the lightest heavy neutrino mass is $<$ 4.5 TeV. We show that the vacuum stability condition and the experimental bound on $μ \to e γ$ together put a constrain on heavy neutrino mass $M_{R} >$ 3.3 TeV. Finally we show that the observation of same-sign-dileptons (SSD) associated with jets at the LHC needs much larger luminosity than available at present. We have estimated the possible maximum cross-section for this process at the LHC and show that with an integrated luminosity 100 $f b^{- 1}$ it may be possible to observe the SSD signals as long as $M_{R} <$ 400 GeV.

13 pages, 7 figures

Constraints on TeV scale Majorana neutrino phenomenology from the Vacuum Stability of the Higgs

Abstract

References in corpus (8)

Cited by in corpus (24)