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arXiv · 1906.04883

Double quarkonium hadroproduction as a probe of gluon Sivers function

Xuan Luo·Hao Sun·Tichouk
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Abstract

The prediction of single spin asymmetry (SSA) in double $\rm J/\psi$ production in proton-proton collision is given out within the framework of non-relativistic QCD, using the recently obtained best fit parameters for the gluon Sivers function extracted from PHENIX data in $\rm p+p^\uparrow\to\pi^0+X$. The color singlet state $\rm ^3 S_1^{(1)}$ and color octet state $\rm ^3 S_1^{(8)}$ are considered to the SSA contribution in the double $\rm J/\psi$ hadroproduction. Our result shows that a sizable asymmetry can be estimated as functions of different kinematic variables.

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Xuan Luo, Hao Sun, Tichouk. 2019-06-12. Double quarkonium hadroproduction as a probe of gluon Sivers function. https://arxiv.org/abs/1906.04883

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