Lightest supersymmetric particle stability and new Higgs signals at the LHC

Journal Article · Tue Nov 01 04:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.84.095028· OSTI ID:21608069

Fileviez Perez, Pavel; Spinner, Sogee; Trenkel, Maike K ^[1]

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1. Phenomenology Institute, Department of Physics, University of Wisconsin-Madison, 1150 University Avenue, Madison, Wisconsin 53706 (United States)

The fate of R-parity in the context of the minimal supersymmetric standard model is a central issue which has profound implications for particle physics and cosmology. In this article, we discuss the possibility of testing the mechanism responsible for the stability of the lightest supersymmetric particle at the Large Hadron Collider (LHC). The simplest theoretical framework where R-parity conservation can be explained dynamically allows for two types of B-L models. In the first scenario the new Higgses decay mainly into two right-handed neutrinos, giving rise to exotic lepton number violating signals together with displaced vertices. In the second model, one could have peculiar channels with multileptons and/or multiphotons in the final state. In both cases, the local B-L gauge symmetry is broken at the TeV scale and the discovery of the new Higgs bosons may be possible at the LHC. We investigate in detail the production mechanisms for the Higgs bosons relevant for the LHC and the key decays which would shed light on how R-parity is conserved. These results may help to understand the link between the cold dark matter of the universe and the missing energy that could be observed at the LHC if supersymmetry is realized in nature.

• OSTI ID: 21608069
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 84; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BOSONS
CERN LHC
CYCLIC ACCELERATORS
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
GAUGE INVARIANCE
GRAND UNIFIED THEORY
HIGGS BOSONS
HIGGS MODEL
INVARIANCE PRINCIPLES
LEPTON NUMBER
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATTER
MULTI-PHOTON PROCESSES
NEUTRINOS
NONLUMINOUS MATTER
PARITY
PARTICLE DECAY
PARTICLE MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES
QUANTUM FIELD THEORY
SPARTICLES
STABILITY
STANDARD MODEL
STORAGE RINGS
SUPERSYMMETRY
SYMMETRY
SYNCHROTRONS
TEV RANGE
UNIFIED GAUGE MODELS
UNIVERSE