Intrinsic transverse momentum and parton correlations from nonperturbative short-range interactions
Conference
·
· Acta Physica Polonica B Suppl. 6(1)
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 rho^{-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 in pairs of transverse size rho 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 P_T distribution of hadrons in semi-inclusive DIS and multiparton processes in high-energy pp collisions.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1069234
- Report Number(s):
- JLAB-THY-12-1679; DOE/OR/23177-2403; arXiv:1212.4031
- Conference Information:
- Journal Name: Acta Physica Polonica B Suppl. 6(1) Journal Issue: 1 Journal Volume: 6
- Country of Publication:
- United States
- Language:
- English
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