Two-spin asymmetry for ψ′ photoproduction with the color-octet mechanism -: art. no. 057501

被引：0

作者：

Sudoh, K ^{[1
]}

Morii, T

机构：

[1] Kobe Univ, Fac Human Dev, Kobe, Hyogo 6578501, Japan

[2] Kobe Univ, Grad Sch Sci & Technol, Kobe, Hyogo 6578501, Japan

来源：

PHYSICAL REVIEW D | 2000年 / 62卷 / 05期

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the photoproduction of psi' in the forward regions in polarized gamma p collisions at relevant (DESY) HERA energies. We find that this reaction is very effective to test the color-octet mechanism which is based on the NRQCD factorization formalism. Furthermore we find that the value of the NRQCD matrix elements can be severely constrained by measuring the two-spin asymmetry, though the process depends on the polarized gluon distribution Delta g(x).

引用

页数：4

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