Many leptons at the LHC from the next-to-minimal supersymmetric standard model

Journal Article · Tue Mar 01 00:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.055006· OSTI ID:21537446

Barger, Vernon; Yencho, Brian ^[1]; Shaughnessy, Gabe ^[2]

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1. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)
2. Northwestern University, Department of Physics and Astronomy, Evanston, Illinois 60208 (United States)

We present a benchmark in the parameter space of the next-to-minimal supersymmetric standard model (NMSSM) that provides for a dramatic multilepton signal and no jets containing 5 or more leptons resulting from the cascade decays of the third lightest neutralino, {chi}{sub 3}{sup 0}, and the lightest chargino, {chi}{sub 1}{sup {+-}}, via light charged sleptons. This is a very clean signal with almost no standard model (SM) background. In some cases, a total signal of {>=}3 leptons+0 jets can be detected at the 5{sigma} level at the LHC running at {radical}(s)=7 TeV with approximately 3 fb{sup -1} of data and with less than 1 fb{sup -1} when running at {radical}(s)=14 TeV. In addition, kinematic edges in the invariant mass distributions of 2, 3, and 4 leptons are easily detectable with large integrated luminosities ({approx}600 fb{sup -1}) which can lead to simple measurements of the mass differences of heavy particles in the decay chains, including all combinations of the three lightest neutralinos.

• OSTI ID: 21537446
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 5; Other Information: DOI: 10.1103/PhysRevD.83.055006; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BENCHMARKS
CERN LHC
LEPTONS
LUMINOSITY
MASS DIFFERENCE
MASS DISTRIBUTION
PARTICLE DECAY
STANDARD MODEL
SUPERSYMMETRY
TEV RANGE
ACCELERATORS
CYCLIC ACCELERATORS
DECAY
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
GRAND UNIFIED THEORY
MATHEMATICAL MODELS
OPTICAL PROPERTIES
PARTICLE MODELS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
QUANTUM FIELD THEORY
SPATIAL DISTRIBUTION
STORAGE RINGS
SYMMETRY
SYNCHROTRONS
UNIFIED GAUGE MODELS