scholarly journals Accessing the gluon Sivers function at a future electron-ion collider

2018 ◽  
Vol 98 (3) ◽  
Author(s):  
L. Zheng ◽  
E. C. Aschenauer ◽  
J. H. Lee ◽  
Bo-Wen Xiao ◽  
Zhong-Bao Yin
Keyword(s):  
Sivers Function

scholarly journals Gluon Sivers function and transverse single spin asymmetries in e+p↑→γ+X

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
Siddhesh Padval ◽  
Rohini M. Godbole ◽  
Abhiram Kaushik ◽  
Anuradha Misra ◽  
Vaibhav S. Rawoot
Keyword(s):  
Spin Asymmetries ◽  
Single Spin ◽  
Single Spin Asymmetries ◽  
Sivers Function

scholarly journals Reweighting the Sivers function with jet data from STAR

2021 ◽  
Vol 815 ◽  
pp. 136135
Author(s):  
M. Boglione ◽  
U. D'Alesio ◽  
C. Flore ◽  
J.O. Gonzalez-Hernandez ◽  
F. Murgia ◽  
...  
Keyword(s):  
Sivers Function

scholarly journals PHENOMENOLOGY OF THE SIVERS EFFECT WITH TMD EVOLUTION

2012 ◽  
Vol 20 ◽  
pp. 145-152
Author(s):  
M. ANSELMINO ◽  
M. BOGLIONE ◽  
S. MELIS
Keyword(s):  
Transverse Momentum ◽  
Evolution Equations ◽  
Distribution Functions ◽  
Dependent Data ◽  
Clear Indication ◽  
Transverse Momentum Dependent ◽  
Sidis Data ◽  
Sivers Function ◽  
Theoretical Developments

Recently, theoretical developments have led to the QCD evolution equations for the unpolarized Transverse Momentum Dependent (TMD) distribution functions and for the Sivers function (TMD-evolution). We tested whether the proposed TMD-evolution can already be observed in the SIDIS data on the Sivers asymmetry. Although very preliminary, our analysis shows that data are compatible with such an evolution with a clear indication of evolution in the x-dependent data subsets.

scholarly journals Final state interactions & the Sivers function

2011 ◽  
Author(s):  
Leonard Gamberg ◽  
Marc Schlegel ◽  
David Armstrong ◽  
Volker Burkert ◽  
Jian-Ping Chen ◽  
...  
Keyword(s):  
Final State ◽  
Sivers Function ◽  
Final State Interactions

scholarly journals Low-Virtuality Leptoproduction of Open-Charm as a Probe of the Gluon Sivers Function

2018 ◽  
Vol 59 (3) ◽  
Author(s):  
Rohini M. Godbole ◽  
Abhiram Kaushik ◽  
Anuradha Misra
Keyword(s):  
Open Charm ◽  
Sivers Function

scholarly journals Study of the sign change of the Sivers function from STAR collaboration W/Z production data

2017 ◽  
Vol 2017 (4) ◽  
Author(s):  
M. Anselmino ◽  
M. Boglione ◽  
U. D’Alesio ◽  
F. Murgia ◽  
A. Prokudin
Keyword(s):  
Star Collaboration ◽  
Production Data ◽  
Sign Change ◽  
Sivers Function

scholarly journals NON-UNIVERSALITY AND EVOLUTION OF THE SIVERS FUNCTION

2009 ◽  
Vol 24 (35n37) ◽  
pp. 2984-2994 ◽  
Author(s):  
PHILIP G. RATCLIFFE ◽  
OLEG TERYAEV
Keyword(s):  
Structure Function ◽  
Transverse Spin ◽  
Colour Factor ◽  
Sivers Function ◽  
Pole Strength

We examine the large-x QCD evolution of the twist-three gluonic-pole strength defining an effective T -odd Sivers function, where evolution of the T -even transverse-spin DIS structure function g2 is multiplicative. The result corresponds to a colour-factor modified spin-averaged twist-two evolution.

scholarly journals Sivers function in the quasiclassical approximation

2014 ◽  
Vol 89 (5) ◽  
Author(s):  
Yuri V. Kovchegov ◽  
Matthew D. Sievert
Keyword(s):  
Quasiclassical Approximation ◽  
Sivers Function

scholarly journals The Gluon Sivers Distribution: Status and Future Prospects

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Daniël Boer ◽  
Cédric Lorcé ◽  
Cristian Pisano ◽  
Jian Zhou
Keyword(s):  
Current Data ◽  
Transverse Spin ◽  
Opportunities To Learn ◽  
Linear Combinations ◽  
Spin Asymmetries ◽  
Polarized Protons ◽  
Sivers Function ◽  
Indirect Information ◽  
Hadronic Collisions

We review what is currently known about the gluon Sivers distribution and what are the opportunities to learn more about it. Because single transverse spin asymmetries inp↑p→πXprovide only indirect information about the gluon Sivers function through the relation with the quark-gluon and tri-gluon Qiu-Sterman functions, current data from hadronic collisions at RHIC have not yet been translated into a solid constraint on the gluon Sivers function. SIDIS data, including the COMPASS deuteron data, allow for a gluon Sivers contribution of natural size expected from largeNcarguments, which isO(1/Nc)times the nonsinglet quark Sivers contribution. Several very promising processes to measure the gluon Sivers effect directly have been suggested, which besides RHIC investigations, would strongly favor experiments at AFTER@LHC and a possible future Electron-Ion Collider. Due to the inherent process dependence of TMDs, the gluon Sivers TMD probed in the various processes are different linear combinations of two universal gluon Sivers functions that have different behavior under charge conjugation and that therefore satisfy different theoretical constraints. For this reason both hadronic and DIS type of collisions are essential in the study of the role of gluons in transversely polarized protons.

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