Photoproduction experiment with polarized target at SPring-8

被引：0
|
作者：
Fujiwara, M
机构：
[1] Osaka Univ, Res Ctr Nucl Phys, Ibaraki, Osaka 6570047, Japan
[2] Japan Atom Energy Agcy, Kyoto 6190215, Japan
来源：
ACTA PHYSICA POLONICA B | 2006年 / 37卷 / 01期
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Measurement of double polarization asymmetries for phi photoproduction with the polarized target and a polarized photon beam is a sensitive means to investigate small and exotic amplitudes, such as an s (s) over bar -quark content of nucleons, via interferences with dominant amplitudes and the determination of the spin value of produced hadrons as the pentaquark. In order to realize the double polarization measurements to study the s quark content as well as exotic hadron structures, We started to construct a frozen-spin polarized HD target at the LEPS facility on the new basis of recent technology developments in cryogenic and high magnetic field. We discuss the experiment for phi-meson photoproduction which will be performed in 10 days (40 days) with the result of 20% (10%) accuracy for the double polarization asymmetry measurement.
引用
收藏
页码：57 / 64
页数：8
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