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Collins-Soper Equation for the Energy Evolution of Transverse-Momentum and Spin Dependent Parton Distributions

Ahmad Idilbi·Xiangdong Ji·Jian-Ping Ma·Feng Yuan
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Abstract

The hadron-energy evolution (Collins and Soper) equation for all the leading-twist transverse-momentum and spin dependent parton distributions is derived in the impact parameter space. Based on the result, we present resummation formulas for the spin structure functions in the semi-inclusive deep inelastic scattering.

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Ahmad Idilbi, Xiangdong Ji, Jian-Ping Ma, Feng Yuan. 2004-09-17. Collins-Soper Equation for the Energy Evolution of Transverse-Momentum and Spin Dependent Parton Distributions. https://doi.org/10.1103/physrevd.70.074021

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