Journalartikel

Photoproduction of π0-mesons off protons from the Δ(1232) region to Eγ=3 GeV


Autorenlistevan Pee, H.; Bartholomy, O.; Crede, V.; Anisovich, A. V.; Anton, G.; Bantes, R.; Beloglazov, Yu.; Bogendoerfer, R.; Castelijns, R.; Ehmanns, A.; Ernst, J.; Fabry, I.; Flemming, H.; Foesel, A.; Fuchs, M.; Funke, Ch.; Gothe, R.; Gridnev, A.; Gutz, E.; Hoeffgen, St.; Horn, I.; Hoessl, J.; Junkersfeld, J.; Kalinowsky, H.; Klein, F.; Klempt, E.; Koch, H.; Konrad, M.; Kopf, B.; Krusche, B.; Langheinrich, J.; Loehner, H.; Lopatin, I.; Lotz, J.; Matthaey, H.; Menze, D.; Messchendorp, J.; Nikonov, V. A.; Novinski, D.; Ostrick, M.; Radkov, A.; Sarantsev, A. V.; Schadmand, S.; Schmidt, C.; Schmieden, H.; Schoch, B.; Suft, G.; Sumachev, V.; Szczepanek, T.; Thoma, U.; Walther, D.; Weinheimer, Ch.

Jahr der Veröffentlichung2007

Seiten61-77

ZeitschriftThe European Physical Journal A

Bandnummer31

Heftnummer1

ISSN1434-6001

eISSN1434-601X

Open Access StatusGreen

DOI Linkhttps://doi.org/10.1140/epja/i2006-10160-3

VerlagSpringer


Abstract
Photoproduction of pi(0)-mesons was studied with the Crystal-Barrel detector at ELSA for incident energies from 300 MeV to 3 GeV. Differential cross-sections d sigma/d Omega, d sigma/dt, and the total cross-section are presented. For E (gamma) < 3 GeV, the angular distributions agree well with the SAID parametrization. At photon energies above 1.5 GeV, a strong forward peaking indicates t-channel exchange to be the dominant process. The rapid variations of the cross-section with energy and angle indicate production of resonances. An interpretation of the data within the Bonn-Gatchina partial-wave analysis is briefly discussed.



Zitierstile

Harvard-Zitierstilvan Pee, H., Bartholomy, O., Crede, V., Anisovich, A., Anton, G., Bantes, R., et al. (2007) Photoproduction of π0-mesons off protons from the Δ(1232) region to Eγ=3 GeV, The European Physical Journal A, 31(1), pp. 61-77. https://doi.org/10.1140/epja/i2006-10160-3

APA-Zitierstilvan Pee, H., Bartholomy, O., Crede, V., Anisovich, A., Anton, G., Bantes, R., Beloglazov, Y., Bogendoerfer, R., Castelijns, R., Ehmanns, A., Ernst, J., Fabry, I., Flemming, H., Foesel, A., Fuchs, M., Funke, C., Gothe, R., Gridnev, A., Gutz, E., ...Weinheimer, C. (2007). Photoproduction of π0-mesons off protons from the Δ(1232) region to Eγ=3 GeV. The European Physical Journal A. 31(1), 61-77. https://doi.org/10.1140/epja/i2006-10160-3



Schlagwörter


CROSS-SECTIONELECTROPRODUCTIONLIGHT-BARYON SPECTRUMNEAR-THRESHOLDNEUTRAL PION-PHOTOPRODUCTIONPHOTON ENERGIESRELATIVISTIC QUARK-MODELSIGMA(0)


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