Estimate of the Collins function in a chiral invariant approach

A. Bacchetta , R. Kundu , A. Metz , P.J. Mulders

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classification ✦ hep-ph

keywords collinsfunctionchiralestimateinvariantannihilationapproachasymmetries

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We estimate the Collins function at a low energy scale by calculating the fragmentation of a quark into a pion at the one-loop level in the chiral invariant model of Manohar and Georgi. We give a useful parametrization of our results and we briefly discuss different spin and/or azimuthal asymmetries containing the Collins function and measurable in semi-inclusive DIS and e+ e- annihilation

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Estimate of the Collins function in a chiral invariant approach

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