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Coherent and incoherent π⁰ photoproduction from the deuteron

Siodlaczek, U. and Achenbach, P. and Ahrens, J. and Annand, J. R. M. and Arends, H. J. and Beck, R. and Bilger, R. and Clement, H. and Hejny, V. and Kotulla, M. and Krusche, B. and Kuhr, V. and Leukel, R. and McGeorge, J. C. and Metag, V. and Novotny, R. and de Leon, V. O. and Rambo, F. and Schepkin, M. and Schmidt, A. and Seluzhenkov, I. and Stroher, H. and Wagner, G. J. and Walcher, T. and Weiss, J. and Wissmann, F. and Wolf, M.. (2001) Coherent and incoherent π⁰ photoproduction from the deuteron. The European physical journal. A, Hadrons and nuclei, Vol. 10, H. 3. pp. 365-371.

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Official URL: http://edoc.unibas.ch/dok/A5261963

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Abstract

Differential cross-sections for the reactions d(gamma,pi (o))d and d(gamma,pi (o))pn have been measured at MAMI with the TAPS detector setup in the energy range 140 MeV > E- > 306 MeV. By use of the Glasgow tagging spectrometer an 0.8 MeV energy resolution for photons incident on the target was achieved. The (o) missing energy resolution was sufficient for a reliable separation of coherent and incoherent channels. The data for the break-up channel exhibit very strong final state interaction effects, whereas the observed angular dependence of the inclusive process d(gamma, pi (o))X is in quantitative agreement with predictions for a quasi-free process. The observed absolute d(gamma, pi (o))X cross-sections, on, the other hand, are significantly smaller than predicted by the quasi-free process for E-gamma greater than or similar to 250 MeV. Associating this failure with the pi (o) photoproduction on the neutron would suggest that its cross-section is up to 25% below the presently believed value.
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:Springer-Verlag
ISSN:1434-6001
Note:Variant title: Coherent and incoherent pi(0) photoproduction from the deuteron -- Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:26
Deposited On:22 Mar 2012 13:55

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