Chiral perturbation theory for {tau}{r_arrow}{rho}{pi}{nu}{sub {tau}}, {tau}{r_arrow}{ital K}{asterisk}{pi}{nu}{sub {tau}}, and {tau}{r_arrow}{omega}{pi}{nu}{sub {tau}}

Journal Article · Fri Mar 01 04:00:00 EST 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.53.2523· OSTI ID:279172

Davoudiasl, H; Wise, M B ^[1]

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1. California Institute of Technology, Pasadena, California 91125 (United States)

We use heavy vector meson SU(2){sub {ital L}}{times}SU(2){sub {ital R}} chiral perturbation theory to predict differential decay distributions for {tau}{r_arrow}{rho}{pi}{nu}{sub {tau}} and {tau}{r_arrow}{ital K}{asterisk} {pi}{nu}{sub {tau}} in the kinematic region where {ital p}{sub {ital V}}{center_dot}{ital p}{sub {pi}}/{ital m}{sub {ital V}} (here {ital V}={rho} or {ital K}{asterisk}) is much smaller than the chiral symmetry-breaking scale. We also predict the rate for {tau}{r_arrow}{omega}{pi}{nu}{sub {tau}} in this region (now {ital V}={omega}). Comparing our prediction with experimental data, we determine one of the coupling constants in the heavy vector meson chiral Lagrangian. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: California Institute of Technology
• DOE Contract Number: FG03-92ER40701
• OSTI ID: 279172
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 5 Vol. 53; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHIRAL SYMMETRY
COLOR
COUPLING
KAONS
LAGRANGIAN FUNCTION
OMEGA PARTICLES
PERTURBATION THEORY
PIONS
RHO-770 MESONS
SEMILEPTONIC DECAY
SU GROUPS
SYMMETRY BREAKING
TAU NEUTRINOS
TAU PARTICLES
VECTOR MESONS