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.
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页数：8
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