REAL AND VIRTUAL PHOTON CONTRIBUTIONS TO INELASTIC EP SCATTERING

被引：45

作者：

BORZUMATI, FM ^{[1
]}

SCHULER, GA ^{[1
]}

机构：

[1] CERN, DIV THEORY, CH-1211 GENEVA 23, SWITZERLAND

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1993年 / 58卷 / 01期

关键词：

D O I：

10.1007/BF01554087

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We investigate direct and resolved photon contributions o hard ep scattering at high energies. Some terms of the direct contribution are already included in the resolved photon one, described in terms of the photon structure functions. A suitable subtraction mechanism has to be found in order to avoid double counting. Inelastic ep scattering requires the knowledge of photon structure functions over a wide range in photon virtuality, in particular from approximately zero up to almost 10(5) GeV2 at HERA. We analyse the real and virtual photon structure function and we comment on the structure of the photon in the intermediate region of low virtuality. We finally describe how ep cross sections can be obtained as functions of the virtuality of the exchanged photon.

引用

页码：139 / 152

页数：14

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