Measurement of $\eta$ photoproduction on the proton from threshold to 1500 MeV - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles European Physical Journal A Year : 2007

Measurement of $\eta$ photoproduction on the proton from threshold to 1500 MeV

O. Bartalini
  • Function : Author
V. Bellini
  • Function : Author
M. Capogni
  • Function : Author
L. Casano
  • Function : Author
M. Castoldi
  • Function : Author
A. d'Angelo
R. Di Salvo
  • Function : Author
A. Fantini
  • Function : Author
D. Franco
G. Gervino
  • Function : Author
F. Ghio
  • Function : Author
G. Giardina
  • Function : Author
B. Girolami
  • Function : Author
A. Giusa
  • Function : Author
A. Lapik
  • Function : Author
P. Levi Sandri
  • Function : Author
F. Mammoliti
  • Function : Author
G. Mandaglio
  • Function : Author
A. N. Mushkarenkov
  • Function : Author
V. Nedorezov
  • Function : Author
C. Randieri
  • Function : Author
N. Rudnev
  • Function : Author
G. Russo
  • Function : Author
C. Schaerf
  • Function : Author
M. L. Sperduto
  • Function : Author
M. C. Sutera
  • Function : Author
A. Turinge
  • Function : Author
V. Vegna
  • Function : Author

Abstract

Beam asymmetry and differential cross section for the reaction gamma+p->eta+p were measured from production threshold to 1500 MeV photon laboratory energy. The two dominant neutral decay modes of the eta meson, eta->2g and eta->3pi0, were analyzed. The full set of measurements is in good agreement with previously published results. Our data were compared with three models. They all fit satisfactorily the results but their respective resonance contributions are quite different. The possible photoexcitation of a narrow state N(1670) was investigated and no evidence was found.

Dates and versions

in2p3-00163478 , version 1 (17-07-2007)

Identifiers

Cite

O. Bartalini, V. Bellini, J.P. Bocquet, P. Calvat, M. Capogni, et al.. Measurement of $\eta$ photoproduction on the proton from threshold to 1500 MeV. European Physical Journal A, 2007, 33, pp.169-184. ⟨10.1140/epja/i2007-10439-9⟩. ⟨in2p3-00163478⟩
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