Hard exclusive electroproduction of a pion in the backward region

被引：35

作者：

Lansberg, J. P. ^{[1
]}

Pire, B.

Szymanowski, L.

机构：

[1] Ecole Polytech, CNRS, Ctr Phys Theor, F-91128 Palaiseau, France

[2] Univ Liege, B-4000 Liege 1, Belgium

[3] Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland

来源：

PHYSICAL REVIEW D | 2007年 / 75卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.75.074004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the scaling regime of pion electroproduction in the backward region, eN -> e(')N(')pi. We compute the leading-twist amplitude in the kinematical region, where it factorises into a short-distance matrix element and long-distance dominated nucleon distribution amplitudes and nucleon to pion transition distribution amplitudes. Using the chiral limit of the latter, we obtain a first estimate of the cross section, which may be experimentally studied at JLab or Hermes.

引用

页数：8

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