Observation of Exclusive Charmonium Production and γγ→μ+μ- in pp̅ Collisions at √s=1.96  TeV

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dc.contributor University of Helsinki, Department of Physics en
dc.contributor University of Helsinki, Department of Physics en
dc.contributor University of Helsinki, Department of Physics en
dc.contributor University of Helsinki, Helsinki Institute of Physics en
dc.contributor University of Helsinki, Department of Physics en
dc.contributor University of Helsinki, Department of Physics en
dc.contributor.author Aaltonen, T.
dc.contributor.author Mehtala, P.
dc.contributor.author Orava, R.
dc.contributor.author Maki, T.
dc.contributor.author Saarikko, H.
dc.contributor.author Osterberg, K.
dc.contributor.author CDF collaboration
dc.date.accessioned 2011-01-04T09:45:01Z
dc.date.available 2011-01-04T09:45:01Z
dc.date.issued 2009
dc.identifier.citation Aaltonen , T , Mehtala , P , Orava , R , Maki , T , Saarikko , H , Osterberg , K & CDF collaboration 2009 , ' Observation of Exclusive Charmonium Production and γγ→μ+μ- in pp̅ Collisions at √s=1.96  TeV ' Physical Review Letters , vol 102 , no. 24 , pp. 242001 . , 10.1103/PhysRevLett.102.242001 en
dc.identifier.issn 0031-9007
dc.identifier.other PURE: 9383803
dc.identifier.other PURE UUID: 13d01ab3-a3ad-47e5-a674-5c4cd49b5fc0
dc.identifier.other ArXiv: http://arxiv.org/abs/0902.1271v4
dc.identifier.uri http://hdl.handle.net/10138/24421
dc.description.abstract We have observed the reactions p+pbar --> p+X+pbar, with X being a centrally produced J/psi, psi(2S) or chi_c0, and gamma+gamma --> mu+mu-, in proton- antiproton collisions at sqrt{s} = 1.96 TeV using the Run II Collider Detector at Fermilab. The event signature requires two oppositely charged muons, each with pseudorapidity |eta| mu+mu-. Events with a J/psi and an associated photon candidate are consistent with exclusive chi_c0 production through double pomeron exchange. The exclusive vector meson production is as expected for elastic photo- production, gamma+p --> J/psi(psi(2S)) + p, which is observed here for the first time in hadron-hadron collisions. The cross sections ds/dy(y=0) for p + pbar --> p + X + pbar with X = J/psi, psi(2S) orchi_c0 are 3.92+/-0.62 nb, 0.53+/-0.14 nb, and 75+/-14 nb respectively. The cross section for the continuum, with |eta(mu+/-)| fi
dc.format.extent 7
dc.language.iso eng
dc.publisher American Institute of Physics
dc.relation.ispartof Physical Review Letters
dc.relation.uri http://prl.aps.org/pdf/PRL/v102/i24/e242001
dc.subject hep-ex en
dc.subject 114 Physical sciences en
dc.title Observation of Exclusive Charmonium Production and γγ→μ+μ- in pp̅ Collisions at √s=1.96  TeV en
dc.title.alternative Observation of exclusive charmonium production and gamma+gamma to mu+mu- in p+pbar collisions at sqrt{s} = 1.96 TeV en
dc.type A1 Refereed journal article
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevLett.102.242001
dc.type.dcmitype document
dc.type.uri info:eu-repo/semantics/article
dc.contributor.pbl
dc.contributor.pbl

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