$K^{ast 0}Sigma^+$ photoproduction with evidence for the Kappa Meson Exchange at SPring-8/LEPS

Hwang, S. H.*; Hicks, K.*; Ahn, J. K.*; Nakano, Takashi*

Recently, LEPS collaboration reported the parity spin asymmetry for the $gamma p rightarrow K^{ast 0}Sigma^+$ reaction using linearly polarized photons at beam energies from 1.85 to 2.96 GeV. The parity spin asymmetry ( $P_{sigma} = 2rho^{1}_{1-1} - rho^{1}_{00}$ ) was obtained, with large positive asymmetry at forward angles. This supports that natural-parity exchange is dominant at forward angles for $K^{ast 0}Sigma^+$ photoproduction, which is consistent with meson-exchange. The differential cross sections for the $gamma p rightarrow K^{ast 0}Sigma^+$ reaction are presented at forward angles averaged over all beam energies. There is good agreement with the differential cross sections from the CLAS and the CBELSA/TAPS collaborations.

Language	:	English
Journal	:	Few-Body Systems
Volume	:	54
Number	:	7-10
Pages	:	p.1037 - 1041
Publication Year/Month	:	2013/08
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Paper URL	:	https://doi.org/10.1007/s00601-013-0650-0
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Keywords	:	no keyword
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Registration No. : AA20130473
JAEA Abstracts No. : 41001241
Paper Submission No. : 13226

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