Azimuthal asymmetries in semi-inclusive J /ψ+jet production at an EIC

D'Alesio U.;Pisano C.;
2019-01-01

Abstract

We consider transverse momentum dependent gluon distributions inside both unpolarized and transversely polarized protons and show how they can be probed by looking at azimuthal modulations in ep -> eJ/psi jet X. We find that the contribution due to quark induced subprocesses is always suppressed in the considered kinematic regions, accessible in principle at a future electron-ion collider. Our model-independent estimates of the maximal values of these asymmetries allowed by positivity bounds suggest the feasibility of their measurement. In addition, by adopting the McLerran-Venugopalan model for the unpolarized and linearly polarized gluon densities, we study the behavior of the cos 2 phi asymmetries in the small-x limit.
2019
2019
Inglese
100
9
13
http://harvest.aps.org/bagit/articles/10.1103/PhysRevD.100.094016/apsxml
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.100.094016
Esperti anonimi
internazionale
scientifica
no
D'Alesio, U.; Murgia, F.; Pisano, C.; Taels, P.
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
4
open
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