Evidence for Simultaneous Production of J/ψ and Υ Mesons

Abazov, V. M.; Abbott, B.; Acharya, B. S.; Nunnemann, T. und Sanders, M. P. (2016): Evidence for Simultaneous Production of J/ψ and Υ Mesons. In: Physical Review Letters, Vol. 116, No. 8, 82002

Abstract

We report evidence for the simultaneous production of J/psi and Upsilon mesons in 8.1 fb(-1) of data collected at root s = 1.96 TeV by the D0 experiment at the Fermilab p (p) over bar 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, sigma(eff) = 2.2 +/- 0.7(stat) +/- 0.9(syst) mb.

• Item Type: Journal article
• Faculties: Physics
• Subjects: 500 Science > 530 Physics
• ISSN: 0031-9007
• Annotation: Vollständige Autorenliste siehe Verlagsseite bzw. PDF
• Language: English