We present new Sigma beam asymmetry data for eta meson photoproduction on the proton, using a novel tagged, laser backscattered, linearly polarized photon beam up to 1.1 GeV. The data show large, positive asymmetries, at all incident photon energies. In addition to the S-11(1535) and D-13(1520) resonances necessary to reproduce the cross sections, P-13(1720) and D-15(1675) "four stars" resonances contribute to the Sigma observable, but cannot reproduce the strong forward asymmetries measured at energies higher than 900 MeV.

Ajaka, J., Anghinolfi, M., Bellini, V., Berrier, G., Bocquet, J., Breuer, M., et al. (1998). New Measurement of Σ Beam Asymmetry for η Meson Photoproduction on the Proton. PHYSICAL REVIEW LETTERS, 81, 1797-1800 [10.1103/PhysRevLett.81.1797].

New Measurement of Σ Beam Asymmetry for η Meson Photoproduction on the Proton

D'ANGELO, ANNALISA;LAPIK, ALEXANDER;SCHAERF, CARLO;
1998

Abstract

We present new Sigma beam asymmetry data for eta meson photoproduction on the proton, using a novel tagged, laser backscattered, linearly polarized photon beam up to 1.1 GeV. The data show large, positive asymmetries, at all incident photon energies. In addition to the S-11(1535) and D-13(1520) resonances necessary to reproduce the cross sections, P-13(1720) and D-15(1675) "four stars" resonances contribute to the Sigma observable, but cannot reproduce the strong forward asymmetries measured at energies higher than 900 MeV.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - Fisica Nucleare e Subnucleare
English
Con Impact Factor ISI
NEAR-THRESHOLD PHOTOPRODUCTION; SPIN OBSERVABLES; CALORIMETER; REGION; MODEL
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.81.1797
Ajaka, J., Anghinolfi, M., Bellini, V., Berrier, G., Bocquet, J., Breuer, M., et al. (1998). New Measurement of Σ Beam Asymmetry for η Meson Photoproduction on the Proton. PHYSICAL REVIEW LETTERS, 81, 1797-1800 [10.1103/PhysRevLett.81.1797].
Ajaka, J; Anghinolfi, M; Bellini, V; Berrier, G; Bocquet, J; Breuer, M; Calvat, P; Capogni, M; Casano, L; Castoldi, M; Ciciani, L; Corvisiero, P; D'Angelo, A; Didelez, J; Di Salvo, R; Djalali, C; Duval, M; Frascaria, R; Gervino, G; Ghio, F; Girard, P; Girolami, B; Guinault, E; Hoffmann Rothe, P; Hourany, E; Kilvington, I; Kouznetsov, V; Lapik, A; Sandri, P; Null, M; Null, D; Morlet, M; Nedorezov, V; Nicoletti, L; Perrin, C; Rebreyend, D; Renard, F; Ripani, M; Rosier, L; Rossi, P; Roudot, F; Russew, T; Sanzone, M; Schaerf, C; Sperduto, M; Sudov, A; Taiuti, M; Turinge, A; Van, W; Zucchiatti, A
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/96548
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 152
  • ???jsp.display-item.citation.isi??? 173
social impact