TY  - JOUR
AU  - Wang, E.
AU  - Xie, J. J.
AU  - Nieves, J.
PY  - 2014
DA  - 2014//
TI  - Regge signatures from forward CLAS Lambda(1520) photoproduction data
T2  - Phys. Rev. C
JO  - Physical Review C
SP  - 065203
EP  - 10pp
VL  - 90
IS  - 6
AB  - The γp→K+Λ(1520) reaction mechanism is investigated within a Regge--effective Lagrangian hybrid approach based on our previous study of this reaction [Physical Review C89, 015203 (2014)]. Near threshold and for large K+ angles, both the CLAS and LEPS data can be successfully described by considering the contributions from the contact, t-channel K¯ exchange, u-channel Λ(1115) hyperon pole, and the s-channel nucleon pole and N∗(2120) resonance contributions. However, for higher energies and forward K+ angles, systematic discrepancies with data appear, which hint the possible existence of sizable quark-gluon string mechanism effects. We show how the inclusion of a K¯ Regge--trajectory exchange in the t-channel leads to an efficient description of the Λ(1520) photoproduction channel over the whole energy and angular ranges accessible in the CLAS experiment.
UR  - http://arxiv.org/abs/1405.3142
UR  - https://doi.org/10.1103/PhysRevC.90.065203
DO  - 10.1103/PhysRevC.90.065203
N1  - exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2135), last updated on Wed, 25 Mar 2015 11:56:54 +0000
ID  - Wang_etal2014
ER  -