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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2010 Volume 91, Issue 11, Pages 611–614 (Mi jetpl727)

This article is cited in 1 paper

FIELDS, PARTICLES, AND NUCLEI

Generalized Hidden Local Symmetry Model confronts the decay $\tau^-\to\pi^+\pi^-\pi^-\nu_\tau$

N. N. Achasova, A. A. Kozhevnikovab

a Laboratory of Theoretical Physics, S. L. Sobolev Institute of Mathematics
b Novosibirsk State University

Abstract: Generalized Hidden Local Symmetry (GHLS) model as the chiral model of pseudoscalar, vector, and axial vector mesons, is confronted the ALEPH data on the decay $\tau^-\to\pi^-\pi^-\pi^+\nu_\tau$. It is shown that the spectrum of this decay in GHLS falls short of the experimental data. The modifications of GHLS based on inclusion of heavier axial vector mesons are studied. It is shown that the scheme with two additional axial vector isovector mesons with masses $m_{a^\prime_1}=1.59$ GeV and $m_{a^{\prime\prime}_1}=1.88$ GeV gives a good description of the ALEPH data.

Received: 15.04.2010
Revised: 20.04.2010

Language: English


 English version:
Journal of Experimental and Theoretical Physics Letters, 2010, 91:11, 543–547

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