DOI: 10.1140/epja/i2002-10084-x
Mixing and decays of
- and
-mesons
Ya.I. Azimov Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg, 188300, Russia azimov@pa1400.spb.edu
(Received: 16 September 2002 / Published online: 4 February 2003)
Abstract
Isospin-violating mixing of
- and
-mesons
is reconsidered in terms of propagators. Its influence
on various pairs of
-decays to the same
final states is demonstrated.
Some of them,
and
, have been earlier discussed
in the literature, others (e.g.,
and
) are new in this
context. Changes in partial widths for all the decay pairs are
shown to be correlated. The set of present experimental data,
though yet inconclusive, provides some limits for the direct
-coupling and indirectly supports enhancement of
in comparison with
, though not so large as in some
previous estimates.
11.30.Ly - Other internal and higher symmetries.
13.25.Jx - Decays of other mesons.
14.40.Cs - Other mesons with S=C=0, mass < 2.5 GeV.
© Società Italiana di Fisica, Springer-Verlag 2003