DOI: 10.1140/epjc/s2002-01080-7
Coupled channel analysis of
,
and
from
annihilation
at rest in hydrogen targets at three densities
The OBELIX Collaboration (Received: 15 July 2002 / Published online: 9 December 2002)
Abstract
The
,
and
final
states produced by
annihilation at rest at three different
hydrogen target densities have been analyzed in the frame of a
coupled channel analysis together with
,
and
scattering data. The percentages of the different partial
waves, the branching ratios and the parameters (masses, widths,
and
partial widths) of all the involved
resonances (
JP=0+,1-,2+) have been measured.
The main results on meson spectroscopy concern the determination of the
ratio for
f0(1370) and
f0(1500)
(
and
respectively),
the determination of
a0(1300) parameters
(
MeV;
MeV) and
the observation of two different
signals associated to
and
(
MeV;
MeV and
MeV;
MeV respectively).
© Società Italiana di Fisica, Springer-Verlag 2003