Heavy quark contributions to deep inelastic scattering

Edward Witten

Research output: Contribution to journalArticlepeer-review

245 Scopus citations

Abstract

We show that in an asymptotically free gauge theory, the contribution of heavy quarks to deep inelastic structure functions can be computed in terms of the contributions of light quarks. In the standard model with four quark multiplets and an SU(3) gauge group, we estimate that for 10 GeV2 < Q2 < 40 GeV2 the charmed quark contribution to structure functions will be several percent for x < 0.2 and tenths of a percent for x < 0.2. Our main theoretical tool is an expansion, analogous to the usual operator product expansion, of an operator constructed from heavy quark fields as a sum of light quark and gluon operators with c-number coefficients. This expansion is valied order by order in perturbation theory.

Original languageEnglish (US)
Pages (from-to)445-476
Number of pages32
JournalNuclear Physics, Section B
Volume104
Issue number3
DOIs
StatePublished - Mar 1 1976

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Fingerprint

Dive into the research topics of 'Heavy quark contributions to deep inelastic scattering'. Together they form a unique fingerprint.

Cite this