Small-x parton distributions of large hadronic targets

被引：29

作者：

Hebecker, A ^{[1
]}

Weigert, H

机构：

[1] Univ Cambridge, DAMTP, Cambridge CB3 9EW, England

[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

PHYSICS LETTERS B | 1998年 / 432卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(98)00623-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A simple and intuitive calculation, based on the semiclassical approximation, demonstrates how the large size of a hadronic target introduces a new perturbative scale into the process of small-x deep inelastic scattering. The above calculation, which is performed in the target rest frame, is compared to the McLerran-Venugopalan model for scattering off large nuclei, which has first highlighted this effect in the infinite momentum frame. It is shown that the two approaches, i.e., the rest frame based semiclassical calculation and the infinite momentum frame based McLerran-Venugopalan approach are quantitatively consistent. (C) 1998 Elsevier Science B.V. AII rights reserved.

引用

页码：215 / 221

页数：7

共 13 条

[1] Operator expansion for high-energy scattering [J].

Balitsky, I .

NUCLEAR PHYSICS B, 1996, 463 (01) :99-157

[2] CORRESPONDENCE ARGUMENTS FOR HIGH-ENERGY COLLISIONS [J].

BJORKEN, JD ;

KOGUT, J .

PHYSICAL REVIEW D, 1973, 8 (05) :1341-1357

[3] Drell-Yan process and factorization in impact parameter space [J].

Brodsky, SJ ;

Hebecker, A ;

Quack, E .

PHYSICAL REVIEW D, 1997, 55 (05) :2584-2590

[4] Semiclassical approach to structure functions at small x [J].

Buchmuller, W ;

Hebecker, A .

NUCLEAR PHYSICS B, 1996, 476 (1-2) :203-224

[5] SPACE-TIME STRUCTURE OF DEEP-INELASTIC LEPTON-HADRON SCATTERING [J].

DELDUCA, V ;

BRODSKY, SJ ;

HOYER, P .

PHYSICAL REVIEW D, 1992, 46 (03) :931-943

[6] PARTON DISTRIBUTION-FUNCTIONS FOR TWIST-4 [J].

JAFFE, RL .

NUCLEAR PHYSICS B, 1983, 229 (01) :205-230

[7] Intrinsic glue distribution at very small x [J].

JalilianMarian, J ;

Kovner, A ;

McLerran, L ;

Weigert, H .

PHYSICAL REVIEW D, 1997, 55 (09) :5414-5428

[8] Non-Abelian Weizsacker-Williams field and a two-dimensional effective color charge density for a very large nucleus [J].

Kovchegov, YV .

PHYSICAL REVIEW D, 1996, 54 (09) :5463-5469

[9]

KOVCHEGOV YV, CUTP876

[10] GREEN-FUNCTIONS IN THE COLOR FIELD OF A LARGE NUCLEUS [J].

MCLERRAN, L ;

VENUGOPALAN, R .

PHYSICAL REVIEW D, 1994, 50 (03) :2225-2233

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