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Possible ω bound states in nuclei produced with the (γ,p) reaction

Autor Kaskulov, Murat; Nagahiro, H. ; Hirenzaki, S.; Oset, Eulogi
Palabras clave QCD sum-rules
Vector mesons
Pionic atoms
Walecka Model
Mesic nuclei
[PACS] Meson production in photon/lepton-hadron interactions
[PACS] Nuclear photoproduction reactions
[PACS] Mesonic atoms and molecules, hyperonic atoms and molecules
[PACS] Other mesons with S=C=0, mass < 2.5 GeV
Fecha de publicación 26-jun-2007
EditorAmerican Physical Society
Citación Physical Review C 75(6): 064616 (2007)
ResumenWe perform calculations for ω production in nuclei by means of the (γ,p) reaction for photon energies and proton angles suited to currently running and future experiments in present laboratories. For some cases of possible ω optical potentials, we find that clear peaks are observable when a good resolution in the ω energy is available. We also study the inclusive production of π(0)γ in nuclei around the ω energy and find a double hump structure for the energy spectra, with a peak around a π(0)γ energy of m(ω) -100 MeV, which could easily be misidentified by a signal of an ω bound state in nuclei, while it is actually due to a different scaling of the uncorrelated π(0)γ production and ω production with subsequent π(0)γ decay.
Descripción 10 pages, 10 figures.-- PACS nrs.: 13.60.Le; 25.20.Lj; 36.10.Gv; 14.40.Cs.-- ISI Article Identifier: 000247625200045.-- ArXiv pre-print available at: http://arxiv.org/abs/nucl-th/0610085
Versión del editorhttp://dx.doi.org/10.1103/PhysRevC.75.064616
URI http://hdl.handle.net/10261/9208
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