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Flavor dependence of unpolarized quark Transverse Momentum Distributions from a global fit

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arxiv 2405.13833 v2 pith:3B6CE57C submitted 2024-05-22 hep-ph nucl-exnucl-th

Alessandro Bacchetta , Valerio Bertone , Chiara Bissolotti , Giuseppe Bozzi , Matteo Cerutti , Filippo Delcarro , Marco Radici , Lorenzo Rossi
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Andrea Signori (the MAP Collaboration)
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classification hep-phnucl-exnucl-th
keywords distributionsaccountdifferencesextractionflavorquarkuncertaintiesunpolarized
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We present an extraction of the unpolarized transverse-momentum-dependent parton distribution and fragmentation functions that takes into account possible differences between quark flavors and final-state hadrons. The extraction is based on experimental measurements from Drell-Yan processes and semi-inclusive deep-inelastic scattering, whose combination is essential to distinguish flavor differences. The analysis is carried out at N$^3$LL accuracy. The extracted flavor-dependent distributions give a very good description of the data ($\chi^2/N_{\rm dat} = 1.08$). The resulting uncertainties take fully into account also the uncertainties in the determination of the corresponding collinear distributions.

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Cited by 6 Pith papers

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