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

2017 ◽  
Vol 2017 (6) ◽  
Author(s):  
Alessandro Bacchetta ◽  
Filippo Delcarro ◽  
Cristian Pisano ◽  
Marco Radici ◽  
Andrea Signori

Abstract 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 GeV2. This could be considered as a first attempt at a global fit of TMDs.

2015 ◽  
Vol 37 ◽  
pp. 1560026
Author(s):  
Stefano Melis ◽  
Umberto D'Alesio ◽  
Miguel G. Echevarria ◽  
Ignazio Scimemi

We present a global fit of current available data for Drell-Yan and Z-boson production using the Transverse Momentum Dependent evolution formalism of Refs. [1–4]. We performed our analysis including perturbative calculable contributions up to next-to-next-to-leading-logarithmic accuracy. We took into account non-perturbative corrections both to the intrinsic nucleon structure and to the evolution kernel.


2017 ◽  
Vol 938 ◽  
pp. 012041
Author(s):  
Filippo Delcarro ◽  
Alessandro Bacchetta ◽  
Cristian Pisano ◽  
Marco Radici ◽  
Andrea Signori

Author(s):  
C. Adolph ◽  
M. G. Alekseev ◽  
V. Yu. Alexakhin ◽  
Yu. Alexandrov ◽  
G. D. Alexeev ◽  
...  

Author(s):  
C. Adolph ◽  
M. G. Alekseev ◽  
V. Yu. Alexakhin ◽  
Yu. Alexandrov ◽  
G. D. Alexeev ◽  
...  

2017 ◽  
Author(s):  
Christian Pisano ◽  
Alessandro Bacchetta ◽  
Filippo Delcarro ◽  
Marco Radici ◽  
Andrea Signori

2014 ◽  
Vol 25 ◽  
pp. 1460013
Author(s):  
GUNAR SCHNELL

The exploration of the structure of the nucleon reaches a new level of sophistication when explicit dependences on transverse momenta of partons in both parton distributions and fragmentation functions are included. These dependences lead to a manifold of new correlations between the nucleon and quark spin as well as their momenta and thus a wealth of experimental observables. A particular example is the novel Sivers function that—according to firm QCD predictions—has to change sign when going from the Drell-Yan process to semi-inclusive deep-inelastic scattering. Here a review is given on which knowledge has been gathered about transverse-momentum-dependent (TMD) distribution and fragmentation functions from semi-inclusive deep-inelastic scattering experiments.


Author(s):  
Qaynar Jandaolet ◽  
Alim Ablat ◽  
Pazilet Obul ◽  
Reyima Rashidin ◽  
Ibrahim Sitiwaldi

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