Yukawa coupling and anomalous magnetic moment of the muon: An update for the LHC era

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

DOI:https://doi.org/10.1103/PHYSREVD.83.055009· OSTI ID:21537449

Crivellin, Andreas ^[1]; Girrbach, Jennifer; Nierste, Ulrich ^[1]

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1. Institut fuer Theoretische Teilchenphysik, Karlsruhe Institute of Technology, Universitaet Karlsruhe, D-76128 Karlsruhe (Germany)

We study the interplay between a soft muon Yukawa coupling generated radiatively with the trilinear A-terms of the minimal supersymmetric standard model (MSSM) and the anomalous magnetic moment of the muon. In the absence of a tree-level muon Yukawa coupling the lightest smuon mass is predicted to be in the range between 600 GeV and 2200 GeV at 2{sigma}, if the bino mass M{sub 1} is below 1 TeV. Therefore, a detection of a smuon (in conjunction with a sub-TeV bino) at the LHC would directly imply a nonzero muon Yukawa coupling in the MSSM superpotential. Inclusion of slepton flavor mixing could in principle lower the mass of one smuonlike slepton below 600 GeV. However, the experimental bounds on radiative lepton decays instead strengthen the lower mass bound, with larger effects for smaller M{sub 1}, We also extend the analysis to the electron case and find that a light selectron close to the current experimental search limit may prove the MSSM electron Yukawa coupling to be nonzero.

• OSTI ID: 21537449
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 5; Other Information: DOI: 10.1103/PhysRevD.83.055009; (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
CERN LHC
DETECTION
ELECTRONS
FLAVOR MODEL
GEV RANGE 100-1000
INCLUSIONS
LEPTONIC DECAY
MAGNETIC MOMENTS
MASS
MUONS
SPARTICLES
STANDARD MODEL
SUPERSYMMETRY
TEV RANGE 01-10
YUKAWA POTENTIAL
ACCELERATORS
BASIC INTERACTIONS
COMPOSITE MODELS
CYCLIC ACCELERATORS
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
GEV RANGE
GRAND UNIFIED THEORY
INTERACTIONS
LEPTONS
MATHEMATICAL MODELS
NUCLEAR POTENTIAL
PARTICLE DECAY
PARTICLE MODELS
POSTULATED PARTICLES
POTENTIALS
QUANTUM FIELD THEORY
QUARK MODEL
STORAGE RINGS
SYMMETRY
SYNCHROTRONS
TEV RANGE
UNIFIED GAUGE MODELS
WEAK INTERACTIONS
WEAK PARTICLE DECAY