Lightest supersymmetric particle stability and new Higgs signals at the LHC

Journal Article · Tue Nov 01 00:00:00 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, Vol. 84, Issue 9; Other Information: DOI: 10.1103/PhysRevD.84.095028; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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