Research Papers in Physics and Astronomy

 

Date of this Version

2016

Citation

PRL 116, 082002 (2016)

Comments

Published by the American Physical Society

DOI: 10.1103/PhysRevLett.116.082002

Abstract

We report evidence for the simultaneous production of J/ψ and ϒ mesons in 8.1 fb−1 of data collected at [?] = 1.96 TeV by the D0 experiment at the Fermilab pp Tevatron Collider. Events with these characteristics are expected to be produced predominantly by gluon-gluon interactions. In this analysis, we extract the effective cross section characterizing the initial parton spatial distribution, σeff = 2.2 ± 0.7(stat) ± 0.9(syst) mb.

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