Re-analysis of the A(1520) photoproduction reaction
NAGIOS: RODERIC FUNCIONANDO

Re-analysis of the A(1520) photoproduction reaction

DSpace Repository

Re-analysis of the A(1520) photoproduction reaction

Show simple item record

dc.contributor.author Xie, J. J.
dc.contributor.author Wang, En
dc.contributor.author Nieves Pamplona, Juan Miguel
dc.date.accessioned 2014-10-14T12:17:10Z
dc.date.available 2014-10-14T12:17:10Z
dc.date.issued 2014
dc.identifier.uri http://hdl.handle.net/10550/39180
dc.description.abstract Based on previous studies that support the important role of the N*(2120)D-13 resonance in the gamma p -> K+ A(1520) reaction, we make a re-analysis of this A(1520) photoproduction reaction taking into account the recent CLAS differential cross-section data. In addition to the contact, t-channel (K) over bar exchange, s-channel nucleon pole, and N*(2120) [previously called N*(2080)] resonance contributions, which have been considered in previous works, we also study the u-channel A(1115) hyperon pole term. The latter mechanism has always been ignored in all theoretical analysis, which has mostly relied on the very forward K+ angular LEPS data. It is shown that when the contributions from the N*(2120) resonance and the A(1115) hyperon are taken into account, both the new CLAS and the previous LEPS data can be simultaneously described. We also show that the contribution from the u-channel A(1115) pole term produces an enhancement for large K+ angles, and it becomes more and more relevant as the photon energy increases, being essential to describe the CLAS differential cross sections at backward angles. Furthermore, we find that the new CLAS data also favor the existence of the N*(2120) resonance and that these measurements can be used to further constrain its properties.
dc.language.iso eng
dc.relation.ispartof Physical Review C, 2014, vol. 89, num. 1, p. 015203
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Xie, J. J. Wang, En Nieves Pamplona, Juan Miguel 2014 Re-analysis of the A(1520) photoproduction reaction Physical Review C 89 1 015203
dc.subject Física
dc.title Re-analysis of the A(1520) photoproduction reaction
dc.type info:eu-repo/semantics/article
dc.date.updated 2014-10-14T12:17:10Z
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevC.89.015203
dc.identifier.idgrec 099144

View       (307.5Kb)

This item appears in the following Collection(s)

Show simple item record

Search DSpace

Advanced Search

Browse

Statistics