Anomalous cross section for photon-photon scattering in gauge theories

Edward Witten

Research output: Contribution to journalArticlepeer-review

424 Scopus citations

Abstract

We consider the deep inelastic structure functions of the photon in an asymptotically free gauge theory. In contrast to the case of a hadronic target, we find that the shortdistance analysis determines the shape and magnitude and not merely the Q2 dependence of the structure functions. The structure functions of the free quark theory are renormalized by finite, calculable factors. For example, at x = 0.1, we find that F2 will, at large Q2, exceed the free quark result by a factor 1.751, while for x = 0.5, F2 is suppressed asymptotically, relative to the free quark theory, by a factor 0.964, and at x = 0.8, by a factor 0.611.

Original languageEnglish (US)
Pages (from-to)189-202
Number of pages14
JournalNuclear Physics, Section B
Volume120
Issue number2
DOIs
StatePublished - Mar 14 1977

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Fingerprint

Dive into the research topics of 'Anomalous cross section for photon-photon scattering in gauge theories'. Together they form a unique fingerprint.

Cite this