Average Transverse Momentum Quantities Approaching the Lightfront

Daniel Boer*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)
178 Downloads (Pure)

Abstract

In this contribution to Light Cone 2014, three average transverse momentum quantities are discussed: the Sivers shift, the dijet imbalance, and the p (T) broadening. The definitions of these quantities involve integrals over all transverse momenta that are overly sensitive to the region of large transverse momenta, which conveys little information about the transverse momentum distributions of quarks and gluons inside hadrons. TMD factorization naturally suggests alternative definitions of such integrated quantities, using Bessel-weighting and rapidity cut-offs, with the conventional definitions as limiting cases. The regularized quantities are given in terms of integrals over the TMDs of interest that are well-defined and moreover have the advantage of being amenable to lattice evaluations.

Original languageEnglish
Pages (from-to)439-445
Number of pages7
JournalFew-Body systems
Volume56
DOIs
Publication statusPublished - Sep-2015

Keywords

  • PARTON DISTRIBUTION-FUNCTIONS
  • DEEP-INELASTIC SCATTERING
  • FINAL-STATE INTERACTIONS
  • SINGLE-SPIN ASYMMETRIES
  • DRELL-YAN PROCESS
  • AZIMUTHAL ASYMMETRIES
  • RENORMALIZATION
  • LEPTOPRODUCTION

Cite this