Extraction of unpolarized quark transverse momentum dependent parton distributions from Drell-Yan/Z-boson production
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2019
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Springer
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Abstract
We present the extraction of unpolarized quark transverse momentum dependent parton distribution functions (TMDPDFs) and the non-perturbative part of TMD evolution kernel from the global analysis of Drell-Yan and Z-boson production data. The analysis is performed at the next-to-next-to-leading order (NNLO) in perturbative QCD, using the -prescription. The estimation of the error-propagation from the experimental uncertainties to non-perturbative function is made by the replica method. The importance of the inclusion of the precise LHC data and its influence on the determination of non-perturbative functions is discussed.
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© 2019 Springer.
A.V. thanks A. Prokudin and N. Sato for stimulating discussions. V.B. acknowledges support from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant agreement No. 647981, 3DSPIN). I.S. is supported by the Spanish MECD grant FPA2016-75654-C2-2-P.