L. Bertolotto et al., RESULTS FROM (P)OVER-BAR-P-]PHI-PHI, Nuovo cimento della Società Italiana di Fisica. A. Nuclei, particles and fields, 107(11), 1994, pp. 2329-2337
The reaction ($) over bar pp --> phi phi is investigated in the JETSET
(PS202) experiment using an internal target in LEAR. Data have been a
nalysed at a variety of beam momenta from 1.2 GeV/c to 2.0 GeV/c, corr
esponding to centre-of-mass energies between 2.15 GeV and 2.43 GeV. A
strong phi phi-signal was observed over the whole energy range, prelim
inary results giving phi phi-yields of (1-2)mu b. No evidence for narr
ow resonances was found within the accumulated statistics. The capabil
ity of the experiment to measure phi --> K+K- decay angular distributi
ons and thus put constraints on the spin-parity quantum numbers of a p
ossible resonant intermediate state is demonstrated.