A first determination of the unpolarized quark TMDs from a global analysis

Cristian Pisano; Alessandro Bacchetta; Filippo Delcarro; Marco Radici; Andrea Signori

A first determination of the unpolarized quark TMDs from a global analysis

High Energy Physics - Phenomenology 2018-01-26 v1

Authors: Cristian Pisano , Alessandro Bacchetta , Filippo Delcarro , Marco Radici , Andrea Signori

Abstract

Transverse momentum dependent distribution and fragmentation functions of unpolarized quarks inside unpolarized protons are extracted, for the first time, through a simultaneous analysis of semi-inclusive deep-inelastic scattering, Drell-Yan and $Z$ boson hadroproduction processes. This study is performed at leading order in perturbative QCD, with energy scale evolution at the next-to-leading logarithmic accuracy. Moreover, some specific choices are made to deal with low scale evolution around 1 GeV $^2$ . Since only data in the low transverse momentum region are considered, no matching to fixed-order calculations at high transverse momentum is needed.

Keywords

transverse momentum dependent distributions global analysis semi-inclusive deep-inelastic scattering Drell-Yan Z boson hadroproduction perturbative QCD

Cite

@article{arxiv.1801.08443,
  title  = {A first determination of the unpolarized quark TMDs from a global analysis},
  author = {Cristian Pisano and Alessandro Bacchetta and Filippo Delcarro and Marco Radici and Andrea Signori},
  journal= {arXiv preprint arXiv:1801.08443},
  year   = {2018}
}

Comments

10 pages, 6 figures, 1 table; to appear in the Proceedings of the QCD Evolution 2017 Workshop, Newport News, Virginia (USA), 22 - 26 May 2017

A first determination of the unpolarized quark TMDs from a global analysis

Abstract

Keywords

Cite

Comments

Related papers