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Unpolarized Transverse Momentum Distributions from a global fit of Drell-Yan and Semi-Inclusive Deep-Inelastic Scattering data

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arxiv 2206.07598 v2 pith:CK4HUTPP submitted 2022-06-15 hep-ph hep-exnucl-th

Alessandro Bacchetta , Valerio Bertone , Chiara Bissolotti , Giuseppe Bozzi , Matteo Cerutti , Fulvio Piacenza , Marco Radici , Andrea Signori This is my paper · ORCID
classification hep-phhep-exnucl-th
keywords datadeep-inelasticscatteringsemi-inclusivedrell-yanunpolarizedaccuracyanalysis
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We present an extraction of unpolarized transverse-momentum-dependent parton distribution and fragmentation functions based on more than two thousands data points from several experiments for two different processes: semi-inclusive deep-inelastic scattering and Drell-Yan production of lepton pairs. The baseline analysis is performed with a Monte Carlo replica method resumming large logarithms at N3LL accuracy. The resulting description of the data is very good ($\chi^2/N_{\rm dat} = 1.06$). For semi-inclusive deep-inelastic scattering, predictions for multiplicities are normalized by factors that cure the discrepancy with data introduced by higher-order perturbative corrections.

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Cited by 6 Pith papers

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