Intrinsic transverse momentum and parton correlations from nonperturbative short-range interactions

P. Schweitzer, M. Strikman, C. Weiss

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

We summarize recent progress in understanding the effects of nonperturbative short-range interactions in QCD on the nucleon's partonic structure at a low scale: (a) Sea quarks have intrinsic transverse momenta up to the chiral symmetry-breaking scale ρ-1 ~ 0.6 GeV, much larger than those of valence quarks. (b) Sea quarks in the nucleon light-cone wave function exist partly in correlated pairs of transverse size ρ with sigma and pi-like quantum numbers and a distinctive spin structure (L = 1 components). The effects are demonstrated in an effective model of the low-energy dynamics resulting from chiral symmetry breaking in QCD. They have numerous implications for the PT distribution of hadrons in semi-inclusive DIS and multiparton processes in high-energy pp collisions.

Original languageEnglish (US)
Pages (from-to)109-115
Number of pages7
JournalActa Physica Polonica B, Proceedings Supplement
Volume6
Issue number1
DOIs
StatePublished - 2013

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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