DIFFRACTIVE LEPTOPRODUCTION OF VECTOR-MESONS IN QCD

被引:524
作者
BRODSKY, SJ
FRANKFURT, L
GUNION, JF
MUELLER, AH
STRIKMAN, M
机构
[1] TEL AVIV UNIV,RAYMOND & BEVERLY SACKLER FAC EXACT SCI,SCH PHYS & ASTRON,RAMAT AVIV,ISRAEL
[2] UNIV CALIF DAVIS,DAVIS INST HIGH ENERGY PHYS,DEPT PHYS,DAVIS,CA 95616
[3] COLUMBIA UNIV,DEPT PHYS,NEW YORK,NY 10027
[4] PENN STATE UNIV,DEPT PHYS,UNIVERSITY PK,PA 16802
[5] ST PETERSBURG NUCL PHYS INST,ST PETERSBURG,RUSSIA
来源
PHYSICAL REVIEW D | 1994年 / 50卷 / 05期
基金
美国国家科学基金会;
关键词
D O I
10.1103/PhysRevD.50.3134
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We demonstrate that the distinctive features of the forward differential cross section of diffractive leptoproduction of a vector meson can be legitimately calculated in perturbative QCD in terms of the lightcone qq $($) over bar$$ wave function of the vector meson and the gluon distribution of the target. In particular, we calculate the Q(2) and nuclear dependence of the diffractive leptoproduction of vector mesons and estimate the cross section. The production of longitudinally polarized vector mesons by longitudinally polarized virtual photons is predicted to be the dominant component, yielding a cross section behaving as Q(-6) The nuclear dependence of the diffractive cross sections, which follows from a factorization theorem in perturbative QCD, provides important tests of color transparency as well as constraints on the shadowing of the gluon structure functions and the longitudinal structure functions of nuclei.
引用
收藏
页码:3134 / 3144
页数:11
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