Transverse Single Spin Asymmetry in $p+p^\uparrow \rightarrow J/\psi +X$
| Autor: | Godbole, Rohini M., Kaushik, Abhiram, Misra, Anuradha, Rawoot, Vaibhav, Sonawane, Bipin |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Phys. Rev. D 96, 096025 (2017) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.96.096025 |
| Popis: | We present estimates of transverse single spin asymmetry (TSSA) in $p+p^\uparrow \rightarrow J/\psi+X$ within the colour evaporation model of charmonium production in a generalized parton model (GPM) framework, using the recently obtained best fit parameters for the gluon Sivers function (GSF) extracted from PHENIX data on TSSA in $p+p^\uparrow \to \pi^0+X$ at midrapidity. We calculate asymmetry at $\sqrt{s} = 200$ GeV, and compare the results with PHENIX data on TSSA in the process $p + p^\uparrow \to J/\psi+X$. We also present estimates for asymmetry at $\sqrt{s} = 115 $ GeV corresponding to the proposed fixed target experiment AFTER@LHC and at $\sqrt{s} = 500$ GeV corresponding to the higher RHIC energy. Finally, we investigate the effect of the transverse momentum dependent (TMD) evolution of the densities involved, on the asymmetry. Comment: 24 pages, 9 figures |
| Databáze: | arXiv |
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