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arxiv: 1703.10157 · v1 · pith:MQVIX4M6new · submitted 2017-03-29 · ✦ hep-ph

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

Alessandro Bacchetta , Filippo Delcarro , Cristian Pisano (INFN , Pavia , Pavia U.) , Marco Radici (INFN , Pavia) , Andrea Signori (Jefferson Lab) This is my paper
classification ✦ hep-ph
keywords momentumtransversedatadeep-inelasticdistributionsdrell-yanevolutionextraction
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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.

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