Non-universality of transverse momentum dependent parton distribution functions

  title={Non-universality of transverse momentum dependent parton distribution functions},
  author={Cedran Bomhof and P. J. G. Mulders},
In the field theoretical description of hadronic scattering processes, single transverse-spin asymmetries arise due to gluon initial and final state interactions. These interactions lead to process dependent Wilson lines in the operator definitions of transverse momentum dependent parton distribution functions. In particular for hadron–hadron scattering processes with hadronic final states this has important ramifications for possible factorization formulas in terms of (non)universal TMD parton… CONTINUE READING

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