Virtual Photon Strucutre Functions and the Parton Content of the Electron

Details Virtual Photon Strucutre Functions and the Parton Content of the Electron Virtual Photon Strucutre Functions and the Parton Content of the Electron

1994-03-04

arxiv.org/abs/hep-ph/9403229v1

Phys.Rev.D50:3124-3133,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages and 3 figures (available from DREES@WSICPHEN as topdraw or PS files); LaTeX with equation.sty; MAD/PH/819, BU 94-02

Scientific paper

10.1103/PhysRevD.50.3124

We point out that in processes involving the parton content of the photon the usual effective photon approximation should be modified. The reason is that the parton content of virtual photons is logarithmically suppressed compared to real photons. We describe this suppression using several simple, physically motivated ans\"atze. Although the parton content of the electron in general no longer factorizes into an electron flux function and a photon structure function, it can still be expressed as a single integral. Numerical examples are given for the \eplem\ collider TRISTAN as well as the $ep$ collider HERA.

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