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arXiv · 2405.13833

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

Alessandro Bacchetta·Valerio Bertone·Chiara Bissolotti·Giuseppe Bozzi·Matteo Cerutti·Filippo Delcarro·Marco Radici·Lorenzo Rossi·Andrea Signori
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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 ($χ^2/N_{\rm dat} = 1.08$). The resulting uncertainties take fully into account also the uncertainties in the determination of the corresponding collinear distributions.

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Alessandro Bacchetta, Valerio Bertone, Chiara Bissolotti, Giuseppe Bozzi, Matteo Cerutti, Filippo Delcarro, Marco Radici, Lorenzo Rossi, Andrea Signori. 2024-10-02. Flavor dependence of unpolarized quark Transverse Momentum Distributions from a global fit. https://doi.org/10.1007/jhep08(2024)232

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