Power corrections to TMD factorization for Z-boson production

Abstract

A typical factorization formula for production of a particle with a small transverse momentum in hadron-hadron collisions is given by a convolution of two leading-twist TMD parton densities with cross section of production of the final particle by the two partons. For practical applications at a given transverse momentum, though, one should estimate at what momenta the power corrections to TMD factorization formula due to higher-twist operators become essential. In this paper we calculate the first power corrections to TMD factorization formula for Z-boson production and Drell-Yan process in high-energy hadron-hadron collisions. At the leading order in $N_c$ power corrections are expressed in terms of leading-twist TMDs by QCD equations of motion.

44 pages, 3 figures. v2: text changes. arXiv admin note: text overlap with arXiv:1706.01415

References in corpus (5)

• Drell-Yan production at small q_T, transverse parton distributions and the collinear anomaly
• Anomalous dimension of subleading-power N-jet operators
• Non-perturbative QCD effects in $q_T$ spectra of Drell-Yan and $Z$-boson production
• Higher-twist corrections to gluon TMD factorization
• Power Counting and Modes in SCET

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