PT Journal
AU Bonilla, C
   Romao, JC
   Valle, JWF
TI Neutrino mass and invisible Higgs decays at the LHC
SO Physical Review D
JI Phys. Rev. D
PY 2015
BP 113015
EP 7pp
VL 91
IS 11
DI 10.1103/PhysRevD.91.113015
LA English
AB The discovery of the Higgs boson suggests that neutrinos also get their mass from spontaneous symmetry breaking. In the simplest ungauged lepton-number scheme, the Standard Model Higgs now has two other partners: a massive CP-even scalar, and the massless Nambu-Goldstone boson, called the Majoron. For weak-scale breaking of lepton number the invisible decays of the CP-even Higgs bosons to the Majoron lead to potentially copious sources of events with large missing energy. Using LHC results, we study how the constraints on invisible decays of the Higgs boson restrict the relevant parameters, substantially extending those previously derived from LEP and potentially shedding light on the scale of spontaneous lepton-number violation.
ER