The European Physical Journal A

, Volume 31, Issue 3, pp 373–381 | Cite as

Semi-Inclusive Deep Inelastic Scattering processes from small to large PT

Regular Article - Hadron Physics

Abstract.

We consider the azimuthal and PT-dependence of hadrons produced in unpolarized Semi-Inclusive Deep Inelastic Scattering (SIDIS) processes, within the factorized QCD parton model. It is shown that at small PT values, P T ≲ 1GeV/c, lowest-order contributions, coupled to unintegrated (transverse-momentum-dependent) quark distribution and fragmentation functions, describe all data. At larger PT values, P T ≳ 1GeV/c, the usual pQCD higher-order collinear contributions dominate. Having explained the full PT range of available data, we give new detailed predictions concerning the azimuthal and PT-dependence of hadrons which could be measured in ongoing or planned experiments by HERMES, COMPASS and JLab Collaborations.

PACS.

13.88.+e Polarization in interactions and scattering 13.60.-r Photon and charged-lepton interactions with hadrons 13.85.Ni Inclusive production with identified hadrons 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  • M. Anselmino
    • 1
  • M. Boglione
    • 1
  • A. Prokudin
    • 1
  • C. Türk
    • 1
  1. 1.Dipartimento di Fisica TeoricaUniversità di Torino and INFN, Sezione di TorinoTorinoItaly

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