π 0 photoproduction on the proton for photon energies from 0.675 to 2.875 GeV

Differential cross sections for the reaction $\gamma p \to p \pi^0$ have been measured with the CEBAF Large Acceptance Spectrometer (CLAS) and a tagged photon beam with energies from 0.675 to 2.875 GeV. The results reported here possess greater accuracy in the absolute normalization than previous me...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Physical review. C 2007-08, Vol.76 (2), Article 025211
Hauptverfasser:	Dugger, M., Ritchie, B. G., Ball, J. P., Collins, P., Pasyuk, E., Arndt, R. A., Briscoe, W. J., Strakovsky, I. I., Workman, R. L., Adams, G., Amarian, M., Ambrozewicz, P., Anciant, E., Anghinolfi, M., Asavapibhop, B., Asryan, G., Audit, G., Avakian, H., Bagdasaryan, H., Baillie, N., Baltzell, N. A., Barrow, S., Battaglieri, M., Beard, K., Bedlinskiy, I., Bektasoglu, M., Bellis, M., Benmouna, N., Berman, B. L., Bianchi, N., Biselli, A. S., Bonner, B. E., Bouchigny, S., Boiarinov, S., Bradford, R., Branford, D., Brooks, W. K., Bültmann, S., Burkert, V. D., Butuceanu, C., Calarco, J. R., Careccia, S. L., Carman, D. S., Carnahan, B., Chen, S., Cole, P. L., Coleman, A., Coltharp, P., Cords, D., Corvisiero, P., Crabb, D., Crannell, H., Cummings, J. P., Sanctis, E. De, Vita, R. De, Degtyarenko, P. V., Denizli, H., Dennis, L., Deur, A., Dharmawardane, K. V., Dhuga, K. S., Dickson, R., Djalali, C., Dodge, G. E., Donnelly, J., Doughty, D., Dragovitsch, P., Dytman, S., Dzyubak, O. P., Egiyan, H., Egiyan, K. S., Elouadrhiri, L., Empl, A., Eugenio, P., Fatemi, R., Fedotov, G., Feldman, G., Feuerbach, R. J., Ficenec, J., Forest, T. A., Funsten, H., Garçon, M., Gavalian, G., Gilfoyle, G. P., Giovanetti, K. L., Girod, F. X., Goetz, J. T., Gothe, R. W., Griffioen, K. A., Guidal, M., Guillo, M., Guler, N., Guo, L., Gyurjyan, V., Hadjidakis, C., Hakobyan, R. S., Hardie, J., Heddle, D., Hersman, F. W., Hicks, K.
Format:	Artikel
Sprache:	eng
Schlagworte:	High Energy Physics - Experiment Physics
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Differential cross sections for the reaction $\gamma p \to p \pi^0$ have been measured with the CEBAF Large Acceptance Spectrometer (CLAS) and a tagged photon beam with energies from 0.675 to 2.875 GeV. The results reported here possess greater accuracy in the absolute normalization than previous measurements. They disagree with recent CB-ELSA measurements for the process at forward scattering angles. Agreement with the SAID and MAID fits is found below 1 GeV. The present set of cross sections has been incorporated into the SAID database, and exploratory fits have been extended to 3 GeV. Resonance couplings have been extracted and compared to previous determinations.
ISSN:	0556-2813 2469-9985 1089-490X 2469-9993
DOI:	10.1103/PhysRevC.76.025211