Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8187721 | Physics Letters B | 2013 | 7 Pages |
Abstract
In this work we consider how a parton distribution function, with an explicit transverse momentum dependence can be properly defined in a regularization-scheme independent manner. We argue that by considering a factorized form of the transverse momentum dependent spectrum for the production of a heavy lepton pair in Drell-Yan reaction, one should first split the relevant soft function into two boost invariant contributions. When those soft contributions are added to the pure collinear contributions, well-defined hadronic matrix elements emerge, i.e., the transverse momentum dependent distributions. We also perform a comparison with Collinsʼ definition.
Related Topics
Physical Sciences and Engineering
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Nuclear and High Energy Physics
Authors
Miguel G. EchevarrÃa, Ahmad Idilbi, Ignazio Scimemi,