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arXiv · 1211.6285

K*Sigma photoproduction off the proton target with baryon resonances

Sang-Ho Kim·Seung-il Nam·Atsushi Hosaka·Hyun-Chul Kim
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Abstract

We investigate the photoproduction of K*0Sigma+ and K*+Sigma0 off the proton target, employing the effective Lagrangian approach at the tree-level Born approximation. In addition to the (s, t, u)-channel Born diagrams, we take into account various baryon-resonance contributions such as F15(2000), D13(2080), G17(2190), D15(2200), F35(2000), G37(2200), F37(2390), and Sigma*(1385, 3/2+) in a fully covariant manner. We present the numerical results for the energy and angular dependences for the cross sections in comparison to available experimental data. The single-polarization observables, i.e. the photon-beam, recoil and target baryon polarization asymmetries are computed as well for future experiments. We observe from the numerical results that the resonance contributions play a minor role in producing the strength of the cross sections, being different from the K*Lambda photoproduction. In contrast, it turns out that the Delta(1232)-pole contribution and strange-meson exchanges in the t-channel dominate the scattering process. On the other hand, the higher resonances influence the polarization observables such as the recoil and target asymmetries.

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Sang-Ho Kim, Seung-il Nam, Atsushi Hosaka, Hyun-Chul Kim. 2013-09-16. K*Sigma photoproduction off the proton target with baryon resonances. https://doi.org/10.1103/physrevd.88.054012

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