Charged Higgs boson effects in the production and decay of a heavy Majorana neutrino at the CERN LHC

2008/03/19 by Shaouly Bar-Shalom, G. Eilam, Gad Eilam +2 · 1 citation
Physics and Astronomy · #Boson #Dark Matter and Cosmic Phenomena #Electron #Higgs boson #Large Hadron Collider #Lepton #Lepton number #MAJORANA #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #hep-ph

paper · pdf · doi:10.1103/physrevd.77.115019

published as Phys.Rev.D77:115019,2008 · revtex4, 16 pages, 2 figures

arxiv created 2008/03/19 · openalex publication_date 2008/06/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We consider a new interaction between a heavy Majorana neutrino (N) and a charged Higgs boson (H^\ifmmode±\else\textpm\fi), and show that it can have drastic implications on lepton-number-violating (LNV) signal of same-sign dileptons at the CERN LHC. The LNV signal of heavy Majorana neutrinos previously considered at the LHC, pp\ensuremath→\ensuremathℓ⁺N\ensuremath→\ensuremathℓ⁺\ensuremathℓ⁺W^\ensuremath-, may be overwhelmed by pp\ensuremath→\ensuremathℓ⁺N\ensuremath→\ensuremathℓ⁺\ensuremathℓ⁺H^\ensuremath-. With the subsequent decays H^\ensuremath-\ensuremath→tb or H^\ensuremath-\ensuremath→W^\ensuremath-H⁰, the heavy Majorana neutrino production leads to the spectacular events of \ensuremathℓ⁺\ensuremathℓ⁺bb+2 jets. We also explore the case m_N<m_H⁺, where the decay H⁺\ensuremath→\ensuremathℓ⁺N can become the dominant N-production mechanism at the LHC. In particular, we show that the process gb\ensuremath→tH^\ensuremath- followed by t\ensuremath→bW⁺ and H^\ensuremath-\ensuremath→\ensuremathℓ^\ensuremath-N\ensuremath→\ensuremathℓ^\ensuremath-\ensuremathℓ^\ensuremath-W⁺ could lead to another type of spectacular events of \ensuremathℓ^\ensuremath-\ensuremathℓ^\ensuremath-b+4 jets.

Citations

• Inverse neutrinoless doubleβdecay reexamined
• A little Higgs model of neutrino masses
• Bounds on effective Majorana neutrino masses at HERA
• Signatures for Majorana Neutrinos at Hadron Colliders
• Signature of heavy Majorana neutrinos at a linear collider: Enhanced charged Higgs pair production
• Z-induced FCNC's and their effects on neutrino oscillations
• Verifiable radiative seesaw mechanism of neutrino mass and dark matter

Cited by

• The search for heavy Majorana neutrinos