Equality of two definitions for transverse momentum dependent parton distribution functions
Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology2013Vol. 87(3)
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Abstract
We compare recent, seemingly different, approaches to transverse momentum dependent factorization (due to Echevarria, Idilbi, and Scimemi and to Collins), and show that they are the same, apart from an apparent difference in their definition of the $\overline{\mathrm{MS}}$ renormalization scheme.
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