Scale evolution of gluon TMDPDFs

Miguel G. Echevarria; Tomas Kasemets; Piet J. Mulders; Cristian Pisano

doi:10.1051/epjconf/20158502005

Proceedings

Open Access

EPJ Web of Conferences 85, 02005 (2015)
https://doi.org/10.1051/epjconf/20158502005

Scale evolution of gluon TMDPDFs

Miguel G. Echevarria¹^,2^a, Tomas Kasemets¹^,2^b, Piet J. Mulders¹^,2^c and Cristian Pisano¹^,2^d

¹ Department of Physics and Astronomy, VU University Amsterdam, De Boelelaan 1081, NL-1081 HV Amsterdam, the Netherlands
² Nikhef, Science Park 105, NL-1098 XG Amsterdam, the Netherlands

^a e-mail: m.g.echevarria@nikhef.nl (* speaker)
^b e-mail: kasemets@nikhef.nl
^c e-mail: mulders@few.vu.nl
^d e-mail: c.pisano@nikhef.nl

Published online: 23 January 2015

Abstract

By applying the effective field theory machinery we factorize the transverse momentum spectrum of Higgs boson production, where the main hadronic quantities are the gluon transverse momentum dependent parton distribution functions (TMDPDFs). We properly define those quantities, showing explicitly, in the case of an unpolarized hadron, that they are free from rapidity divergences, and extract their evolution properties. It turns out that the evolution for all eight (un-)polarized leading-twist gluon TMDPDFs is driven by the same evolution kernel, for which we derive the necessary ingredients to obtain a resummation of large logarithms at next-tonext-to-leading-logarithmic accuracy. We make predictions for the contribution of linearly polarized gluons to the Higgs boson q_T -spectrum.

© Owned by the authors, published by EDP Sciences, 2015

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