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Production of phi and omega mesons in near-threshold pp reactions

Articolo
Data di Pubblicazione:
1998
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 observed phi/omega ratio is (3.7 +/- 0.7(-0.9)(+1.2)) X 10(-3). After phase space corrections, this ratio is about a factor of 10 enhanced relative to naive predictions based upon the Okubo-Zweig-Iizuka rule, in comparison to an enhancement by a factor of similar to 3 previously observed at higher energies. The modest increase of this enhancement near the production threshold is compared to the much larger increase of the phi/omega ratio observed in specific channels of <(p)over bar p> annihilation experiments.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
SIGMA-TERM; RULE; ANNIHILATION; NUCLEON; REST; STRANGENESS; COLLISIONS
Elenco autori:
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
Autori di Ateneo:
BUSSA Maria Pia Simonetta
MAGGIORA Marco
Link alla scheda completa:
https://iris.unito.it/handle/2318/73860
Pubblicato in:
PHYSICAL REVIEW LETTERS
Journal
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