ATLAS measurements of J/ψ events at √s=7TeV

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dc.contributor.author Vlachos, S en
dc.date.accessioned 2014-03-01T01:59:37Z
dc.date.available 2014-03-01T01:59:37Z
dc.date.issued 2010 en
dc.identifier.issn 09205632 en
dc.identifier.uri http://hdl.handle.net/123456789/29009
dc.subject ATLAS en
dc.subject J/ψ en
dc.title ATLAS measurements of J/ψ events at √s=7TeV en
heal.type journalArticle en
heal.identifier.primary 10.1016/j.nuclphysbps.2010.10.091 en
heal.identifier.secondary http://dx.doi.org/10.1016/j.nuclphysbps.2010.10.091 en
heal.publicationDate 2010 en
heal.abstract The first observation of the J/ψ→μ+μ- resonance using the ATLAS detector, in 7 TeV proton-proton collisions at the LHC, is reported for an integrated luminosity of approximately 6.4 nb-1. The reconstructed invariant mass agrees with the PDG value within statistical uncertainties, and the peak width is compatible with Monte Carlo expectations. The background estimated from Monte Carlo, or reconstructed same sign muon pairs, matches well with observations. The muon trigger and reconstruction efficiencies in this very low transverse momentum region are studied using the J/ψ candidates. © 2010 Elsevier B.V. en
heal.journalName Nuclear Physics B - Proceedings Supplements en
dc.identifier.doi 10.1016/j.nuclphysbps.2010.10.091 en
dc.identifier.volume 207-208 en
dc.identifier.issue 1 C en
dc.identifier.spage 359 en
dc.identifier.epage 362 en

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