EPJ Web Conf.
Volume 137, 2017XIIth Quark Confinement and the Hadron Spectrum
|Number of page(s)||6|
|Section||Section C: Heavy Quarks|
|Published online||22 March 2017|
J/ψ + Z production at the LHC
1 IPNO, Université Paris-Saclay, Univ. Paris-Sud, CNRS/IN2P3, F-91406 Orsay, France
2 Theoretical Physics Department, CERN, CH-1211 Geneva 23, Switzerland
a e-mail: Jean-Philippe.Lansberg@in2p3.fr
Published online: 22 March 2017
We briefly review recent results which we have obtained in the study of J/ψ + Z production at the LHC. Considering our NLO computation in the Colour Evaporation Model (CEM) as an upper theory limit for the single-parton-scattering contributions, we claim that the existing data set from ATLAS points at a dominant double-partonscattering contribution with an effective cross section smaller than that for jet-related observables. As a side product of our analysis, we have computed, for the first time, the one-loop QCD corrections to the J/ψ PT-differential cross section in the CEM.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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