Evidence for Nucleon-Resonance Excitation inω-Meson Photoproduction | Zendy

J. Ajaka | Zendy; Y. Assafiri | Zendy; S. Bouchigny | Zendy; J.P. Didelez | Zendy; L. Fichen | Zendy; M. Guidal | Zendy; E. Hourany | Zendy; V. Kouznetsov | Zendy; R. Kunne | Zendy; A. Mushkarenkov | Zendy; V. Nedorezov | Zendy; N. Rudnev | Zendy; A. Turinge | Zendy; Q. Zhao | Zendy

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Evidence for Nucleon-Resonance Excitation inω-Meson Photoproduction

Author(s) -

J. Ajaka,

Y. Assafiri,

S. Bouchigny,

J.P. Didelez,

L. Fichen,

M. Guidal,

E. Hourany,

V. Kouznetsov,

R. Kunne,

A. Mushkarenkov,

V. Nedorezov,

N. Rudnev,

A. Turinge,

Q. Zhao

Publication year - 2006

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.96.132003

Subject(s) - physics , hadron , meson , particle physics , resonance (particle physics) , cross section (physics) , beam energy , beam (structure) , excitation , nuclear physics , nucleon , differential (mechanical device) , omega , energy (signal processing) , optics , quantum mechanics , thermodynamics

PHASEThe photoproduction of the omega meson has been studied at GRAAL from threshold up to a photon energy of 1.5 GeV. The differential cross sections and beam asymmetries have been measured precisely at all angles. The total cross section is also obtained. Systematic enhancements of the differential cross section at large angles and nonzero beam asymmetries at intermediate angles provide clear evidence for s- and u-channel resonant processes. The data are compared to the results of hadron and quark models

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