Journalartikel

Jahr der Veröffentlichung: 1996

Seiten: 20-25

Zeitschrift: Physics Letters B

Bandnummer: 368

Heftnummer: 1-2

ISSN: 0370-2693

DOI Link: https://doi.org/10.1016/0370-2693(95)01488-8

Verlag: Elsevier

Abstract: 
Differential and total cross sections for the photoproduction of neutral pions from the proton have been measured for incident photon energies from 140-270 MeV, using the photon spectrometer TAPS at the tagged photon beam of the 855 MeV Mainz Microtron. The energy dependence of the s- and p-wave multipoles close to threshold was deduced from a multipole fit and a multipole analysis. The extracted s-wave amplitude E(0+) at threshold is found to be significantly smaller than the prediction of the classical low energy theorems, but is in reasonable agreement with the chiral perturbation theory.

Harvard-Zitierstil: Fuchs, M., Ahrens, J., Anton, G., Averbeck, R., Beck, R., Bernstein, A., et al. (1996) Neutral pion photoproduction from the proton near threshold, Physics Letters B, 368(1-2), pp. 20-25. https://doi.org/10.1016/0370-2693(95)01488-8

APA-Zitierstil: Fuchs, M., Ahrens, J., Anton, G., Averbeck, R., Beck, R., Bernstein, A., Gabler, A., Harter, F., Harty, P., Hlavac, S., Krusche, B., McGregor, I., Metag, V., Novotny, R., Owens, R., Peise, J., RobigLandau, M., Schubert, A., Simon, R., ...Tries, V. (1996). Neutral pion photoproduction from the proton near threshold. Physics Letters B. 368(1-2), 20-25. https://doi.org/10.1016/0370-2693(95)01488-8