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Transverse single spin asymmetry in e plus p(up arrow) -> e plus J/psi plus X and transverse momentum dependent evolution of the Sivers function

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Title Transverse single spin asymmetry in e plus p(up arrow) -> e plus J/psi plus X and transverse momentum dependent evolution of the Sivers function
 
Creator GODBOLE, RM
MISRA, A
MUKHERJEE, A
RAWOOT, VS
 
Subject POLARIZED PROTON-BEAM
HARD SCATTERING
ANALYZING POWER
QUARK FLAVORS
J-PSI
PREDICTIONS
QCD
 
Description We extend our analysis of transverse single spin asymmetry in electroproduction of J/psi to include the effect of the scale evolution of the transverse momentum dependent (TMD) parton distribution functions and gluon Sivers function. We estimate single spin asymmetry for JLab, HERMES, COMPASS, and eRHIC energies using the color evaporation model of charmonium production, using an analytically obtained approximate solution of TMD evolution equations discussed in the literature. We find that there is a reduction in the asymmetry compared with our predictions for the earlier case considered by us, wherein the Q(2) dependence came only from DGLAP evolution of the unpolarized gluon densities and a different parametrization of the TMD Sivers function was used.
 
Publisher AMER PHYSICAL SOC
 
Date 2014-10-16T13:28:59Z
2014-10-16T13:28:59Z
2013
 
Type Article
 
Identifier PHYSICAL REVIEW D, 88(1)
http://dx.doi.org/10.1103/PhysRevD.88.014029
http://dspace.library.iitb.ac.in/jspui/handle/100/15667
 
Language en