Lepton Number Violation in Higgs Decay at LHC.
We show that within the left-right symmetric model, lepton number violating decays of the Higgs boson can be discovered at the LHC. The process is due to the mixing of the Higgs boson with the triplet that breaks parity. As a result, the Higgs boson can act as a gateway to the origin of the heavy Majorana neutrino mass. To assess the LHC reach, a detailed collider study of the same-sign dileptons plus jets channel is provided. This process is complementary to the existing nuclear and collider searches for lepton number violation and can probe the scale of parity restoration even beyond other direct searches.
IFIC, Universitat de València-CSIC, Apartamento Correus 22085, E-46071 València, Spain.
Alessio
A
Maiezza
Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia.
Miha
M
Nemevšek
Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
Fabrizio
F
Nesti