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
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