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Investigations into the flavor dependence of partonic transverse momentum

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arxiv 1309.3507 v1 pith:EGB3UBRS submitted 2013-09-13 hep-ph

Andrea Signori (Nikhef , VU Amsterdam) , Alessandro Bacchetta (Pavia U. , INFN) , Marco Radici (INFN) , Gunar Schnell (UPV/EHU , IKERBASQUE) This is my paper · ORCID
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keywords functionsdependenceflavorfragmentationdistributionfindindicationsmomentum
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Recent experimental data on semi-inclusive deep-inelastic scattering from the HERMES collaboration allow us to discuss for the first time the flavor dependence of unpolarized transverse-momentum dependent distribution and fragmentation functions. We find convincing indications that favored fragmentation functions into pions have smaller average transverse momentum than unfavored functions and fragmentation functions into kaons. We find weaker indications of flavor dependence in the distribution functions.

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Cited by 4 Pith papers

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  3. Twist-3 effects in fully inclusive jet production from $e^+e^-$ annihilation

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    Twist-3 corrections to e+e- -> hadron + inclusive jet are derived including weak interactions, yielding two azimuthal asymmetries that can expose the Collins fragmentation function at future colliders.

  4. Hadron production in the charged current semi-inclusive deeply inelastic scattering of $N=Z$ nuclei

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    The pion yield asymmetry in charged-current neutrino SIDIS of N=Z nuclei is predicted to be nearly independent of the nucleus type and sensitive to sea-quark and disfavored-fragmentation inputs.

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