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Crede, V. [Author]; Bartholomy, O. [Author]; Flemming, J. K. [Author]; Fosel, P. S. [Author]; Freiesleben, H. [Author]; Fuchs, M. [Author]; Funke, C. [Author]; Gothe, R. [Author]; Gridnev, A. B. [Author]; Gutz, E. [Author]; Hoeffgen, S. [Author]; Horn, I. [Author]; Anisovich, A. [Author]; Hossl, J. [Author]; Joosten, R. [Author]; Junkersfeld, J. [Author]; Kalinowsky, H. [Author]; Klein, F. [Author]; Klempt, E. [Author]; Koch, H. [Author]; Konrad, M. [Author]; Kopf, B. [Author]; Krusche, B. [Author]; Anton, G. [Author]; [...]

Photoproduction of eta mesons off protons for 0.75 GeV kleiner E(gamma) kleiner 3 GeV

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  • Media type: E-Article
  • Title: Photoproduction of eta mesons off protons for 0.75 GeV kleiner E(gamma) kleiner 3 GeV
  • Contributor: Crede, V. [Author]; Bartholomy, O. [Author]; Flemming, J. K. [Author]; Fosel, P. S. [Author]; Freiesleben, H. [Author]; Fuchs, M. [Author]; Funke, C. [Author]; Gothe, R. [Author]; Gridnev, A. B. [Author]; Gutz, E. [Author]; Hoeffgen, S. [Author]; Horn, I. [Author]; Anisovich, A. [Author]; Hossl, J. [Author]; Joosten, R. [Author]; Junkersfeld, J. [Author]; Kalinowsky, H. [Author]; Klein, F. [Author]; Klempt, E. [Author]; Koch, H. [Author]; Konrad, M. [Author]; Kopf, B. [Author]; Krusche, B. [Author]; Anton, G. [Author]; [...]
  • imprint: APS, 2005
  • Published in: Physical review letters 94, 012004 (2005). doi:10.1103/PhysRevLett.94.012004
  • Language: English
  • DOI: https://doi.org/10.1103/PhysRevLett.94.012004
  • ISSN: 0031-9007
  • Keywords: channel cross section: energy dependence ; photon p --> p eta ; photon p: exclusive reaction ; nucleon resonance: intermediate state ; eta: decay modes ; eta: photoproduction ; angular distribution ; Bonn ELSA Stor ; eta --> 3pi0 ; 0.7-3.0 GeV ; nucleon resonance: mass spectrum ; eta --> 2photon ; four-pi-detector: experimental results ; isobar model ; nucleon resonance: width
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: Total and differential cross sections for the reaction p(gamma,eta)p have been measured for photon energies in the range from 750 MeV to 3 GeV. The low-energy data are dominated by the S-11 wave which has two poles in the energy region below 2 GeV. Eleven nucleon resonances are observed in their decay into peta. At medium energies we find evidence for a new resonance N(2070)D-15 with (M,Gamma)=(2068+/-22, 295+/-40) MeV. At gamma energies above 1.5 GeV, a strong peak in the forward direction develops, signaling the exchange of vector mesons in the t channel.
  • Access State: Open Access