• Open Access

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

Umberto D’Alesio, Francesco Murgia, Cristian Pisano, and Pieter Taels
Phys. Rev. D 100, 094016 – Published 15 November 2019

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 epeJ/ψjetX. 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 cos2ϕ asymmetries in the small-x limit.

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  • Received 5 August 2019

DOI:https://doi.org/10.1103/PhysRevD.100.094016

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Umberto D’Alesio1,2,*, Francesco Murgia2,†, Cristian Pisano1,2,‡, and Pieter Taels2,§

  • 1Dipartimento di Fisica, Università di Cagliari, Cittadella Universitaria, I-09042 Monserrato, Cagliari, Italy
  • 2INFN, Sezione di Cagliari, Cittadella Universitaria, I-09042 Monserrato, Cagliari, Italy

  • *umberto.dalesio@ca.infn.it
  • francesco.murgia@ca.infn.it
  • cristian.pisano@ca.infn.it
  • §pieter.taels@ca.infn.it

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Vol. 100, Iss. 9 — 1 November 2019

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