Novel Higgs decay signals in R-parity violating models

Journal Article · Tue Jul 01 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.015015· OSTI ID:21250269

Sierra, D Aristizabal; Porod, W; Restrepo, D; Yaguna, Carlos E ^[1]

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1. INFN, Laboratori Nazionali di Frascati, Codice Fiscale 13, I00044 Frascati (Italy)

In supersymmetric models the lightest Higgs boson may decay with a sizable branching ratio into a pair of light neutralinos. We analyze such decays within the context of the minimal supersymmetric standard model with R-parity violation, where the neutralino itself is unstable and decays into standard model fermions. We show that the R-parity violating couplings induce novel Higgs decay signals that might facilitate the discovery of the Higgs boson at colliders. At the LHC, the Higgs may be observed, for instance, through its decay--via two neutralinos--into final states containing missing energy and isolated charged leptons such as l{sup {+-}}l{sup {+-}}, l{sup {+-}}l{sup {+-}}, 3l, and 4l. Another promising possibility is the search for the displaced vertices associated with the neutralino decay. We also point out that Higgs searches at the LHC might additionally provide the first evidence of R-parity violation.

• OSTI ID: 21250269
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 78; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
CERN LHC
COUPLING
HIGGS BOSONS
HIGGS MODEL
LEPTONS
PARITY
PARTICLE DECAY
STANDARD MODEL
SUPERSYMMETRY