https://doi.org/10.1140/epjc/s2006-02500-4
Experimental Physics
Production properties of
vector mesons and their spin alignment as measured in the NOMAD experiment
Received:
11
December
2005
Revised:
31
January
2006
Published online:
13
March
2006
First measurements of mesons production properties and their spin alignment in
charged current (CC) and neutral current (NC) interactions are presented. The analysis of the full data sample of the NOMAD experiment is performed in different kinematic regions. For
and
mesons produced in
CC interactions and decaying into
we have found the following yields per event:
and
respectively, while for the
and
mesons produced in
interactions the corresponding yields per event are:
and
. The results obtained for the
parameter,
and
for
and
produced in
CC interactions, are compared to theoretical predictions tuned on LEP measurements in
annihilation at the
pole. For
mesons produced in
interactions the measured
parameter is
.
© Springer-Verlag, 2006