Theoretical study of incoherent phi photoproduction on a deuteron target
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Theoretical study of incoherent phi photoproduction on a deuteron target

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Theoretical study of incoherent phi photoproduction on a deuteron target

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dc.contributor.author Sekihara, T.
dc.contributor.author Martínez Torres, Alberto
dc.contributor.author Oset Báguena, Eulogio
dc.contributor.author Jido, D.
dc.date.accessioned 2015-08-19T10:58:44Z
dc.date.available 2015-08-19T10:58:44Z
dc.date.issued 2012
dc.identifier.uri http://hdl.handle.net/10550/46675
dc.description.abstract We study the photoproduction of phi mesons in deuteron, paying attention to the modification of the cross section from bound protons to the free ones with the aim of comparing with recent results at LEPS. For this purpose we take into account Fermi motion in single scattering and rescattering of the phi to account for phi absorption on a second nucleon as well as the rescattering of the proton. We find that the contribution of the double scattering is much smaller than the typical cross section of gamma p to phi p in free space, which implies a very small screening of the phi production in deuteron. The contribution from the proton rescattering, on the other hand, is found to be not negligible compared to the cross section of gamma p to phi p in free space, and leads to a moderate reduction of the phi photoproduction cross section on a deuteron at forward angles if LEPS set up is taken into account. The Fermi motion allows contribution of the single scattering in regions forbidden by phase space in the free case. In particular, we find that for momentum transferred squared close to the maximum value, the Fermi motion changes drastically the shape of d sigma / dt, to the point that the ratio of this cross section to the free one becomes very sensitive to the precise value of t chosen, or the size of the bin used in an experimental analysis. Hence, this particular region of t does not seem the most indicated to find effects of a possible phi absorption in the deuteron. This reaction is studied theoretically as a function of t and the effect of the experimental angular cuts at LEPS is also discussed, providing guidelines for future experimental analyses of the reaction.
dc.language.iso eng
dc.relation.ispartof European Physical Journal A, 2012, vol. 48, num. 1, p. 10
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Sekihara, T. Martínez Torres, Alberto Oset Báguena, Eulogio Jido, D. 2012 Theoretical study of incoherent phi photoproduction on a deuteron target European Physical Journal A 48 1 10
dc.subject Física
dc.title Theoretical study of incoherent phi photoproduction on a deuteron target
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-08-19T10:58:45Z
dc.identifier.doi http://dx.doi.org/10.1140/epja/i2012-12010-1
dc.identifier.idgrec 072115

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