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High Energy Physics - Phenomenology

arXiv:1503.06671 (hep-ph)
[Submitted on 23 Mar 2015 (v1), last revised 24 Mar 2015 (this version, v2)]

Title:On the Extraction of Cross Sections for pi0 and eta Photoproduction off Neutrons from Deuteron Data

Authors:V. E. Tarasov (ITEP), W. J. Briscoe (GW), M. Dieterle (Basel U.), B. Krusche (Basel U.), A. E. Kudryavtsev (ITEP/GW), M. Ostrick (JGU), I. I. Strakovsky (GW)
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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 (FSI) corrections for the proton and neutron target are in general not equal, but for pi0 production there are special cases were they have to be identical and there are large regions in the parameter space of incident photon energy and pion polar angle, \theta^*, where they happen to be quite similar. The corrections for both target nucleons are practically identical for $\pi_0$ production in the energy range of the Delta(1232)3/2+ resonance due to the specific isospin structure of this excitation. Also above the $\Delta$-isobar range large differences between proton and neutron correction factors are only predicted for extreme forward angles ($\theta^*$ < 20 deg), but the results are similar for larger angles. Numerical results for the gp-->pi0p and gn-->pi0n correction factors are discussed. Also the model description for the available data on the differential gd-->pi0pn cross sections are given.
Comments: 16 pages, 5 figures; v2 fixed several minor typos
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
Cite as: arXiv:1503.06671 [hep-ph]
  (or arXiv:1503.06671v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1503.06671
Related DOI: https://doi.org/10.1134/S1063778816020186

Submission history

From: Igor Strakovsky [view email]
[v1] Mon, 23 Mar 2015 14:56:59 UTC (191 KB)
[v2] Tue, 24 Mar 2015 18:42:49 UTC (193 KB)
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