Leptophilic signals of a sneutrino (N)LSP and flavor biases from flavor-blind supersymmetry

Journal Article · Tue Jun 01 04:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.115003· OSTI ID:21407994

Katz, Andrey ^[1]; Tweedie, Brock ^[2]

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1. Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)
2. Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218 (United States)

Although the sneutrino is a viable next-to-lightest supersymmetric particle candidate with gravitino lightest supersymmetric particle, spectra of this type occupy a part of supersymmetry parameter space in which collider signatures are poorly studied. In this paper we will extend previous work on this topic to include sneutrino next-to-lightest supersymmetric particle spectra with nonminimal phenomenology. Generally, these spectra exhibit very leptophilic behavior, which can be easily observed at the LHC. We show that a variety of such spectra can be analyzed with similar techniques, leading in each case to very suggestive evidence for complicated decay chains that end in sneutrinos. Amongst the variations considered, we find a simple class of spectra that produce signals with strong electron-muon asymmetries. These signals could naively be interpreted as evidence for lepton flavor violation, but can occur even with flavor-blind supersymmetry.

• OSTI ID: 21407994
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
ASYMMETRY
CERN LHC
CHAINS
COMPOSITE MODELS
CYCLIC ACCELERATORS
DECAY
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
FLAVOR MODEL
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MUONS
NEUTRINOS
PARTICLE DECAY
PARTICLE MODELS
POSTULATED PARTICLES
QUARK MODEL
SPARTICLES
SPECTRA
STORAGE RINGS
SUPERSYMMETRY
SYMMETRY
SYNCHROTRONS