Assessing signals of TMD physics in SIDIS azimuthal asymmetries and in the extraction of the Sivers function

Abstract

New data on the Sivers azimuthal asymmetry measured in semi-inclusive deep-inelastic scattering processes have recently been released by the COMPASS Collaboration at CERN. Their increased precision and their particular binning, in terms of $Q^2$ as well as $x$, motivates a new extraction of the Sivers function, within the framework of a simple and transparent parametrization. Signals of TMD effects visible in the Sivers asymmetries are critically assessed. A thorough study of the uncertainties affecting the extracted Sivers function is presented, including the low-$x$ and large-$x$ regions.

20 pages, 13 figures

References in corpus (10)

• Global analysis of fragmentation functions for pions and kaons and their uncertainties
• Extraction of partonic transverse momentum distributions from semi-inclusive deep-inelastic scattering, Drell-Yan and Z-boson production
• First measurement of transverse-spin-dependent azimuthal asymmetries in the Drell-Yan process
• Collins and Sivers asymmetries in muonproduction of pions and kaons off transversely polarised proton
• Evolution of twist-3 multi-parton correlation functions relevant to single transverse-spin asymmetry
• Sivers effect in Drell-Yan processes
• Kinematics of Current Region Fragmentation in Semi-Inclusive Deeply Inelastic Scattering
• QCD evolution of naive-time-reversal-odd parton distribution functions
• Transverse parton momenta in single inclusive hadron production in $e^{+}{e}^{-}$ annihilation processes
• A study on the interplay between perturbative QCD and CSS/TMD formalism in SIDIS processes

Cited by in corpus (23)

• Electron-Ion Collider in China
• Precision Studies of QCD in the Low Energy Domain of the EIC
• Hunting BFKL in semi-hard reactions at the LHC
• Collinear matching for Sivers function at next-to-leading order
• N${}^3$LO extraction of the Sivers function from SIDIS, Drell-Yan, and $W^{\pm }/Z$ data
• Transverse spin effects in hard semi-inclusive collisions
• Mapping the Kinematical Regimes of Semi-Inclusive Deep Inelastic Scattering
• Large Transverse Momentum in Semi-Inclusive Deeply Inelastic Scattering Beyond Lowest Order
• Sea quark Sivers distribution
• Factorization of $e^{+}{e}^{-}\to HX$ cross section, differential in $z_h$, $P_T$ and thrust, in the $2$-jet limit
• Transverse momentum moments
• Neutrino-tagged jets at the Electron-Ion Collider
• Intrinsic Transverse Momentum and Evolution in Weighted Spin Asymmetries
• Role of transverse momentum dependence of unpolarised parton distribution and fragmentation functions in the analysis of azimuthal spin asymmetries
• Reweighting the Sivers function with jet data from STAR
• Sivers distribution functions of sea quark in proton with chiral Lagrangian
• Sivers function of sea quarks in the light-cone model
• Extraction of the Sivers function with deep neural networks
• ECCE Sensitivity Studies for Single Hadron Transverse Single Spin Asymmetry Measurements
• Azimuthal asymmetries in $D$-meson and jet production at the EIC
• Quark polarization and transverse momentum effects on double quarkonium production in hadronic collisions
• The Sivers asymmetry of vector meson production in semi-inclusive deep inelastic scattering
• Collins asymmetries for pion-in-jet production in polarized $\ell p$ collisions at the EIC