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

Vlachos, S

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	https://dspace.lib.ntua.gr/xmlui/handle/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