Lepton flavor violating decays of vector mesons

Journal Article · Mon Feb 01 04:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.037702· OSTI ID:21409238

Gutsche, Thomas; Lyubovitskij, Valery E ^[1]; Helo, Juan C; Kovalenko, Sergey ^[2]

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1. Institut fuer Theoretische Physik, Universitaet Tuebingen, Kepler Center for Astro and Particle Physics, Auf der Morgenstelle 14, D-72076 Tuebingen (Germany)
2. Centro de Estudios Subatomicos, Universidad Tecnica Federico Santa Maria, Centro Cientifico-Tecnologico de Valparaiso, Casilla 110-V, Valparaiso (Chile)

We estimate the rates of lepton flavor violating decays of the vector mesons {rho}, {omega}, and {phi}{yields}e{mu}. The theoretical tools are based on an effective Lagrangian approach without referring to any specific realization of the physics beyond the standard model responsible for lepton flavor violation (Le{sub f}). The effective lepton-vector meson couplings are extracted from the existing experimental bounds on the nuclear {mu}{sup -}-e{sup -} conversion. In particular, we derive an upper limit for the Le{sub f} branching ratio Br({phi}{yields}e{mu}){<=}1.3x10{sup -21} which is much more stringent than the recent experimental result Br({phi}{yields}e{mu})<2x10{sup -6} presented by the SND Collaboration. Very tiny limits on Le{sub f} decays of vector mesons derived in this paper make direct experimental observation of these processes unrealistic.

• OSTI ID: 21409238
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BRANCHING RATIO
COMPOSITE MODELS
CONVERSION
COUPLING
DECAY
DIMENSIONLESS NUMBERS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
FLAVOR MODEL
FUNCTIONS
GRAND UNIFIED THEORY
HADRONS
LAGRANGIAN FUNCTION
LEPTONS
MATHEMATICAL MODELS
MESONS
MUONS
MUONS MINUS
PARTICLE DECAY
PARTICLE MODELS
QUANTUM FIELD THEORY
QUARK MODEL
SIMULATION
STANDARD MODEL
UNIFIED GAUGE MODELS
VECTOR MESONS