Eur. Phys. J. C 22, 165-170 (2001)
DOI: 10.1007/s1005201O0785
Filter for strangeness in JPC exotic four-quark states
P.R. PageTheoretical Division, MS B283, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
(Received: 10 May 2001 / Revised version: 15 August 2001 / Published online: 21 September 2001 - © Springer-Verlag / Società Italiana di Fisica 2001 )
Abstract
Symmetrization selection rules for the decay of
four-quark states to two
J=0 mesons are analysed in a non -
field theoretic context with
isospin symmetry. The OZI allowed decay of an isoscalar
exotic state to
or
f0'f0 is only allowed for four-quark
components of the state containing one
pair, providing a
filter for strangeness content in these states.
Decays of four-quark
a0 states are narrower than otherwise
expected. If the experimentally
observed
1-+ enhancement in
is resonant, it is
qualitatively in agreement with being a four-quark state.
© Società Italiana di Fisica, Springer-Verlag 2001