Angular distributions for the exclusive reaction pp --> ppeta observed via the pi(+)pi(-)pi(0) decay channel have been measured at T-beam = 2.15 GeV, 2.50 GeV and 2.85 GeV (excess energies Q = 324 MeV, 412 MeV and 554 MeV). The polar angle of the eta shows an anisotropy with respect to the beam direction for the lowest energy, which vanishes for the higher energies. The anisotropy of the pp polar angle increases slightly with the beam energy.

Exclusive eta production in pp reactions

BALESTRA, Ferruccio;BERTINI, Raimondo Pietro;BUSSA, Maria Pia;FERRERO, Andrea;FERRERO, Livio;FROLOV, VLADIMIR;GARFAGNINI, Raffaello;GRASSO, Antonino;MAGGIORA, MARCO;PANZIERI, Daniele;PIRAGINO, Guido;
2003

Abstract

Angular distributions for the exclusive reaction pp --> ppeta observed via the pi(+)pi(-)pi(0) decay channel have been measured at T-beam = 2.15 GeV, 2.50 GeV and 2.85 GeV (excess energies Q = 324 MeV, 412 MeV and 554 MeV). The polar angle of the eta shows an anisotropy with respect to the beam direction for the lowest energy, which vanishes for the higher energies. The anisotropy of the pp polar angle increases slightly with the beam energy.
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PROTON-PROTON COLLISIONS; NUCLEON-NUCLEON COLLISIONS; OF-FLIGHT SPECTROMETER; NEAR-THRESHOLD; MESON PRODUCTION; PP->PP-ETA REACTION
Frohlich I; F. Balestra; Bedfer Y; R. Bertini; Bland LC; Brenschede A; Brochard F; MP. Bussa; Choi S; ML. Colantoni; Dressler R; Dzemidzic M; Faivre JC; A. Ferrero; L. Ferrero; Foryciarz J; V. Frolov; R. Garfagnini; A. Grasso; Heinz S; Jacobs WW; Kuhn W; Maggiora A; M. Maggiora; A. Manara; D. Panzieri; Pfaff HW; G. Piragino; Popov A; Ritman J; Salabura P; Tchalyshev V; Tosello F; Vigdor SE;
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2318/41612
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