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Single Spin Asymmetry in Charmonium Production

Godbole, Rohini M and Kaushik, Abhiram and Misra, Anuradha and Rawoot, Vaibhav (2015) Single Spin Asymmetry in Charmonium Production. In: FEW-BODY SYSTEMS, 56 (6-9). pp. 461-467.

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Official URL: http://dx.doi.org/10.1007/s00601-015-0945-4


We present estimates of single spin asymmetry (SSA) in the electroproduction of taking into account the transverse momentum dependent (TMD) evolution of the gluon Sivers function and using Color Evaporation Model of charmonium production. We estimate SSA for JLab, HERMES, COMPASS and eRHIC energies using recent parameters for the quark Sivers functions which are fitted using an evolution kernel in which the perturbative part is resummed up to next-to-leading logarithms accuracy. We find that these SSAs are much smaller as compared to our first estimates obtained using DGLAP evolution but are comparable to our estimates obtained using TMD evolution where we had used approximate analytical solution of the TMD evolution equation for the purpose.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the SPRINGER WIEN, SACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited: 24 Sep 2015 07:00
Last Modified: 24 Sep 2015 07:00
URI: http://eprints.iisc.ac.in/id/eprint/52436

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