Extraction of partonic transverse momentum distributions from semi-inclusive deep-inelastic scattering, Drell-Yan and Z-boson production

We present an extraction of unpolarized partonic transverse momentum distributions (TMDs) from a simultaneous fit of available data measured in semi-inclusive deep-inelastic scattering, Drell-Yan and Z boson production. To connect data at different scales, we use TMD evolution at next-to-leading logarithmic accuracy. The analysis is restricted to the low-transverse-momentum region, with no matching to fixed-order calculations at high transverse momentum. We introduce specific choices to deal with TMD evolution at low scales, of the order of 1 GeV

^{2}

. This could be considered as a first attempt at a global fit of TMDs.

Deep Inelastic Scattering (Phenomenology)
QCD Phenomenology
deep inelastic scattering: semi-inclusive reaction
Drell-Yan process
Z0: production
transverse momentum: high
transverse momentum: momentum spectrum
parton: distribution function
distribution function: transverse momentum dependence
leading logarithm approximation: higher-order

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