Calculation of transverse momentum dependent distributions beyond the leading power
Keyword(s):
Abstract We compute the contribution of twist-2 and twist-3 parton distribution functions to the small-b expansion for transverse momentum dependent (TMD) distributions at all powers of b. The computation is done by the twist-decomposition method based on the spinor formalism for all eight quark TMD distributions. The newly computed terms are accompanied by the prefactor (M2b2)n and represent the target-mass corrections to the resummed cross-section. For the first time, a non-trivial expression for the pretzelosity distribution is derived.
2012 ◽
Vol 20
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2012 ◽
Vol 20
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2008 ◽
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pp. 146-179
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2009 ◽
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pp. 1750121
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pp. 379-404
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