Azimuthal asymmetries for hadron distributions inside jets in hadronic collisions
arXiv:1012.0440 · doi:10.1088/1742-6596/295/1/012064
Abstract
Using a generalized parton model approach including spin and intrinsic parton motion effects, and assuming the validity of factorization for large p_T jet production in hadronic collisions, we study the azimuthal distribution around the jet axis of leading pions, produced in the jet fragmentation process. We identify the observable leading-twist azimuthal asymmetries for the unpolarized and single-polarized case related to both quark and gluon-originated jets. We account for all physically allowed combinations of the transverse momentum dependent (TMD) parton distribution and fragmentation functions, with special attention to the Sivers, Boer-Mulders, and transversity quark distributions, and to the Collins fragmentation function for quarks (and to the analogous functions for gluon partons).
8 pages, 5 figures, to appear in the proceedings of 19th International Spin Physics Symposium (SPIN2010), Sep 27-Oct 2, 2010, Juelich (Germany)
References in corpus (6)
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- Azimuthal and Single Spin Asymmetries in Hard Scattering Processes
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Cited by in corpus (6)
- Hadron Fragmentation Inside Jets in Hadronic Collisions
- The Present and Future of QCD
- Polarized jet fragmentation functions
- Testing the universality of the Collins function in pion-jet production at RHIC
- Collins and Sivers effects in p(transv. polarized) p --> jet pion X: Universality and process dependence
- Constraining Quark Transversity through Collins Asymmetry Measurements at STAR