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On the extraction of cross sections for pi(0) and eta photoproduction off neutrons from deuteron data

Tarasov, V. E. and Briscoe, W. J. and Dieterle, M. and Krusche, B. and Kudryavtsev, A. E. and Ostrick, M. and Strakovsky, I. I.. (2016) On the extraction of cross sections for pi(0) and eta photoproduction off neutrons from deuteron data. Physics of Atomic Nuclei / Yadernaya Fizika, 79 (2). pp. 216-227.

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Official URL: http://edoc.unibas.ch/54083/

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Abstract

We discuss the procedure of extracting the photoproduction cross section for neutral pseudoscalar mesons off neutrons from deuteron data. The main statement is that the final-state-interaction corrections for the proton and neutron target are in general not equal, but for π0 production there are special cases where they have to be identical and there are large regions in the parameter space of incident photon energy and pion polar angle, Θ*, where they happen to be quite similar. The corrections for both target nucleons are practically identical for π0 production in the energy range of the Δ(1232)3/2+ resonance due to the specific isospin structure of this excitation. Also above the Δ-isobar range large differences between proton and neutron correction factors are only predicted for extreme forward angles (Θ* *lt; 20°), but the results are similar for larger angles. The case of η photoproduction is also briefly considered. Numerical results for the γp → π0p and γn → π0n correction factors are discussed. Also the model description for the available data on the differential γd → π0pn cross sections are given.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Hadronenphysik (Krusche)
UniBasel Contributors:Krusche, Bernd
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:MAIK Nauka/Interperiodica with Springer
ISSN:1063-7788
e-ISSN:1562-692X
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:27 Feb 2017 14:20
Deposited On:27 Feb 2017 14:20

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