Azimuthal spin asymmetries in light-cone constituent quark models

S. Boffi, A. V. Efremov, B. Pasquini, and P. Schweitzer
Phys. Rev. D 79, 094012 – Published 11 May 2009

Abstract

We present results for all leading-twist azimuthal spin asymmetries in semi-inclusive lepton-nucleon deep-inelastic scattering due to T-even transverse-momentum dependent parton distribution functions on the basis of a light-cone constituent quark model. Attention is paid to discuss the range of applicability of the model, especially with regard to the scale dependence of the observables and the transverse-momentum dependence of the distributions. We find good agreement with available experimental data and present predictions to be further tested by future CLAS, COMPASS, and HERMES data.

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  • Received 16 March 2009

DOI:https://doi.org/10.1103/PhysRevD.79.094012

©2009 American Physical Society

Authors & Affiliations

S. Boffi1,2, A. V. Efremov3, B. Pasquini1,2, and P. Schweitzer4

  • 1Dipartimento di Fisica Nucleare e Teorica, Università degli Studi di Pavia, Pavia, Italy
  • 2Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, Pavia, Italy
  • 3Joint Institute for Nuclear Research, Dubna, 141980 Russia
  • 4Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA

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Issue

Vol. 79, Iss. 9 — 1 May 2009

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