Semi-inclusive deep inelastic scattering and Bessel-weighted asymmetries

Leonard Gamberg, Daniël Boer, Bernhard Musch, Alexei Prokudin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

We consider the cross section in Fourier space, conjugate to the outgoing hadron's transverse momentum, where convolutions of transverse momentum dependent parton distribution functions and fragmentation functions become simple products. Individual asymmetric terms in the cross section can be projected out by means of a generalized set of weights involving Bessel functions. Advantages of employing these Bessel weights are that they suppress (divergent) contributions from high transverse momentum and that soft factors cancel in (Bessel-) weighted asymmetries. Also, the resulting compact expressions immediately connect to previous work on evolution equations for transverse momentum dependent parton distribution and fragmentation functions and to quantities accessible in lattice QCD. Bessel-weighted asymmetries are thus model independent observables that augment the description and our understanding of correlations of spin and momentum in nucleon structure.

Original languageEnglish (US)
Title of host publication8th Circum-Pan-Pacific Symposium on High Energy Spin Physics, PacSPIN2011
Pages72-78
Number of pages7
DOIs
StatePublished - Dec 1 2011
Event8th Circum-Pan-Pacific Symposium on High Energy Spin Physics, PacSPIN2011 - Cairns, QLD, Australia
Duration: Jun 20 2011Jun 24 2011

Publication series

NameAIP Conference Proceedings
Volume1418
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other8th Circum-Pan-Pacific Symposium on High Energy Spin Physics, PacSPIN2011
CountryAustralia
CityCairns, QLD
Period6/20/116/24/11

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Semi-inclusive deep inelastic scattering and Bessel-weighted asymmetries'. Together they form a unique fingerprint.

  • Cite this

    Gamberg, L., Boer, D., Musch, B., & Prokudin, A. (2011). Semi-inclusive deep inelastic scattering and Bessel-weighted asymmetries. In 8th Circum-Pan-Pacific Symposium on High Energy Spin Physics, PacSPIN2011 (pp. 72-78). (AIP Conference Proceedings; Vol. 1418). https://doi.org/10.1063/1.3667306