Generalized Hidden Local Symmetry Model confronts the decay τ-→π+π-π-ντ
N. N. Achasov, A. A. Kozhevnikov1) +
Laboratory of Theoretical Physics, S.L. Sobolev Institute for Mathematics, 630090 Novosibirsk, Russia
+Laboratory of Theoretical Physics, S.L. Sobolev Institute for Mathematics,
and Novosibirsk State University, 630090 Novosibirsk, Russia
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 τ-→π-π-π+ντ. 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 GeV and
GeV gives a good description of the
ALEPH data.