The ALICE experiment at the LHC has studied inclusive J/ψ production at central and forward rapidities in pp collisions at View the MathML source. In this Letter, we report on the first results obtained detecting the J/ψ through the dilepton decay into e+e− and μ+μ− pairs in the rapidity ranges |y|<0.9 and 2.5<y<4, respectively, and with acceptance down to zero pT. In the dielectron channel the analysis was carried out on a data sample corresponding to an integrated luminosity Lint=5.6 nb−1 and the number of signal events is View the MathML source; the corresponding figures in the dimuon channel are Lint=15.6 nb−1 and View the MathML source. The measured production cross sections are View the MathML source and View the MathML source. The differential cross sections, in transverse momentum and rapidity, of the J/ψ were also measured.
Rapidity and transverse momentum dependence of inclusive J/ψ production in pp collisions at sqrt(s) = 7 TeV
BEOLE', Stefania;BIANCHI, LIVIO;BIOLCATI, EMANUELE;BOSSU', FRANCESCO;CHIAVASSA, Emilio Luciano;CORRALES MORALES, YASSER;FERRETTI, Alessandro;GAGLIARDI, Martino;GALLIO, Mauro;INNOCENTI, GIAN MICHELE;LUPARELLO, GRAZIA;MARCHISONE, MASSIMILIANO;MASERA, Massimo;MILANO, LEONARDO;ORTONA, GIACOMO;POGHOSYAN, MARTIN;SICILIANO, MELINDA;SUBIETA VASQUEZ, MARTIN ALFONSO;VERCELLIN, Ermanno;
2011-01-01
Abstract
The ALICE experiment at the LHC has studied inclusive J/ψ production at central and forward rapidities in pp collisions at View the MathML source. In this Letter, we report on the first results obtained detecting the J/ψ through the dilepton decay into e+e− and μ+μ− pairs in the rapidity ranges |y|<0.9 and 2.5File | Dimensione | Formato | |
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rapidity_pp_7TeV_2011.pdf
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