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28 March 2024 |
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On the Extraction of Cross Sections for pi?0 and eta? Photoproduction off Neutrons from Deuteron Data | V. E. Tarasov
; W. J. Briscoe
; M. Dieterle
; B. Krusche
; A. E. Kudryavtsev
; M. Ostrick
; I. I. Strakovsky
; | Date: |
23 Mar 2015 | 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, heta^*, 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
( heta^* < 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. | Source: | arXiv, 1503.6671 | Services: | Forum | Review | PDF | Favorites |
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