PRODUCTION OF PHI AND OMEGA MESONS IN NEAR-THRESHOLD PP REACTIONS

Authors
BALESTRA F BEDFER Y BERTINI R BLAND LC BRENSCHEDE A BROCHARD F BUSSA MP CHALYSHEV V CHOI SH DEBOWSKI M DZEMIDZIC M FALOMKIN IV FAIVRE JC FAVA L FERRERO L FORYCIARZ J FROLOV V GARFAGNINI R GILL D GRASSO A GROSSE E HEINZ S IVANOV VV JACOBS WW KUHN W MAGGIORA A MAGGIORA M MANARA A PANZIERI D PFAFF HW PIRAGINO G PONTECORVO GB POPOV A RITMAN J SALABURA P SENGER P STROTH J TOSELLO F VIGDOR SE ZOSI G
Citation
F. Balestra et al., PRODUCTION OF PHI AND OMEGA MESONS IN NEAR-THRESHOLD PP REACTIONS, Physical review letters, 81(21), 1998, pp. 4572-4575
Citations number
28
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
81
Issue
21
Year of publication
1998
Pages
4572 - 4575
Database
ISI
SICI code
0031-9007(1998)81:21<4572:POPAOM>2.0.ZU;2-K
Abstract
The ratio of the exclusive production cross sections for phi and omega mesons has been measured in pp reactions at T-beam = 2.85 GeV. The ob served phi/omega ratio is (3.7 +/- 0.7(-0.9)(+1.2)) X 10(-3). After ph ase space corrections, this ratio is about a factor of 10 enhanced rel ative to naive predictions based upon the Okubo-Zweig-Iizuka rule, in comparison to an enhancement by a factor of similar to 3 previously ob served at higher energies. The modest increase of this enhancement nea r the production threshold is compared to the much larger increase of the phi/omega ratio observed in specific channels of <(p)over bar p> a nnihilation experiments. [S0031-9007(98)07664-9].