Pseudoscalar mass effects in the decays of [tau] with three pseudoscalar mesons

Journal Article · Thu Dec 01 04:00:00 EST 1994 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.50.6863· OSTI ID:6850190

Decker, R; Finkemeier, M ^[1]; Mirkes, E ^[2]

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1. Institut fuer Theoretische Teilchenphysik, Universitaet Karlsruhe, 76128 Karlsruhe (Germany)
2. Physics Department, University of Wisconsin, Madison, Wisconsin 53706 (United States)

We study the dynamical effects of nonvanishing pseudoscalar masses in [tau] decays into three mesons. The hadronic matrix elements are obtained by using the chiral Lagrangian of the order [ital O]([ital P][sup 2]), including the quark mass terms which explicitly break the chiral symmetry, and implementing the low-lying resonances in the different channels. We demonstrate that suitable angular distributions are sensitive to the nonconservation of the axial-vector current resulting from the pseudoscalar masses. Numerical results for the relevant structure functions are given for the decay modes [tau][r arrow][nu][pi][sup [minus]][pi][sup [minus]][pi][sup +], [nu][ital K][sup [minus]][pi][sup [minus]][pi][sup +], and [nu][ital K][sup [minus]][pi][sup [minus]][ital K][sup +].

• OSTI ID: 6850190
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 50:11; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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662370* -- Decays of Leptons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
BOSONS
CHIRAL SYMMETRY
DECAY
DISTRIBUTION
ELEMENTARY PARTICLES
FERMIONS
FUNCTIONS
HADRONS
HEAVY LEPTONS
LEPTONS
MASS
MATRIX ELEMENTS
MESONS
PARTICLE DECAY
POSTULATED PARTICLES
PSEUDOSCALARS
STRUCTURE FUNCTIONS
SYMMETRY
SYMMETRY BREAKING
TAU PARTICLES