Extraction of partonic transverse momentum distributions from semi-inclusive deep-inelastic scattering, Drell-Yan and Z-boson production
Alessandro BacchettaDipartimento di Fisica, Università di Pavia, via Bassi 6, I-27100, Pavia, ItalyFilippo DelcarroDipartimento di Fisica, Università di Pavia, via Bassi 6, I-27100, Pavia, ItalyCristian PisanoDipartimento di Fisica, Università di Pavia, via Bassi 6, I-27100, Pavia, ItalyMarco RadiciINFN Sezione di Pavia, via Bassi 6, I-27100, Pavia, ItalyAndrea SignoriTheory Center, Thomas Jefferson National Accelerator Facility, 12000 Jefferson Avenue, Newport News, VA, 23606, U.S.A
2017en
ABI
Annotatsiya
A bstract 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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