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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
11
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pubmed:dateCreated |
2007-5-15
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pubmed:abstractText |
We present the first observation of exclusive e(+)e(-) production in hadron-hadron collisions, using pp[over] collision data at (square root) s = 1.96 TeV taken by the run II Collider Detector at Fermilab, and corresponding to an integrated luminosity of 532 pb(-1). We require the absence of any particle signatures in the detector except for an electron and a positron candidate, each with transverse energy E(T) > 5 GeV and pseudorapidity |eta| < 2. With these criteria, 16 events are observed compared to a background expectation of 1.9+/-0.3 events. These events are consistent in cross section and properties with the QED process pp[over] --> p + e(+)e(-) + p[over] through two-photon exchange. The measured cross section is 1.6(-0.3)(+0.5)(stat) +/- 0.3(syst) pb. This agrees with the theoretical prediction of 1.71+/-0.01 pb.
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pubmed:language |
eng
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pubmed:journal |
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pubmed:status |
PubMed-not-MEDLINE
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pubmed:month |
Mar
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pubmed:issn |
0031-9007
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pubmed:author |
pubmed-author:MinB SBS,
pubmed-author:SuzukiTT,
pubmed-author:KatoYY,
pubmed-author:AokiMM,
pubmed-author:JonesMM,
pubmed-author:LiuJJ,
pubmed-author:CooperBB,
pubmed-author:CoxJ EJE,
pubmed-author:WagnerJJ,
pubmed-author:TanakaMM,
pubmed-author:DaviesTT,
pubmed-author:PaulDD,
pubmed-author:SmithJ RJR,
pubmed-author:HaraKK,
pubmed-author:GibsonKK,
pubmed-author:CastroAA,
pubmed-author:MartinAA,
pubmed-author:DubeSS,
pubmed-author:ClarkDD,
pubmed-author:YamashitaTT,
pubmed-author:MillerRR,
pubmed-author:TakikawaKK,
pubmed-author:WilliamsGG,
pubmed-author:LevySS,
pubmed-author:SatoKK,
pubmed-author:OhS HSH,
pubmed-author:TanakaRR,
pubmed-author:ChenY CYC,
pubmed-author:TakeuchiYY,
pubmed-author:WilsonPP,
pubmed-author:YoshidaTT,
pubmed-author:WagnerWW,
pubmed-author:NielsenJJ,
pubmed-author:MartínezMM,
pubmed-author:AkimotoTT,
pubmed-author:SarkarSS,
pubmed-author:ConwayJJ,
pubmed-author:ChuSS,
pubmed-author:YamamotoKK,
pubmed-author:GibsonAA,
pubmed-author:SavardPP,
pubmed-author:GrinsteinSS,
pubmed-author:FieldRR,
pubmed-author:KondoKK,
pubmed-author:BauerGG,
pubmed-author:LeeJJ,
pubmed-author:MukherjeeAA,
pubmed-author:MartinMM,
pubmed-author:PatrickJJ,
pubmed-author:BenjaminDD,
pubmed-author:YangCC,
pubmed-author:WagnerR LRL,
pubmed-author:SchmittMM,
pubmed-author:KubaJJ,
pubmed-author:SantiLL,
pubmed-author:SmithG GGG,
pubmed-author:MehtaAA,
pubmed-author:LancasterMM,
pubmed-author:JansHH,
pubmed-author:SchmidtE EEE,
pubmed-author:ClarkAA,
pubmed-author:ChoKK,
pubmed-author:JensenHH,
pubmed-author:HahnKK,
pubmed-author:LewisJ DJD,
pubmed-author:RossiMM,
pubmed-author:HauserJJ,
pubmed-author:LeeS WSW,
pubmed-author:GauGG,
pubmed-author:MakiTT,
pubmed-author:MacqueenDD,
pubmed-author:HaraII,
pubmed-author:SchwarzTT,
pubmed-author:KrausJJ,
pubmed-author:MOER ERE,
pubmed-author:JamesEE,
pubmed-author:MartinVV,
pubmed-author:MilerII,
pubmed-author:CampbellMM,
pubmed-author:LalPP,
pubmed-author:HarrisR MRM,
pubmed-author:MillsCC,
pubmed-author:GoldsteinJJ,
pubmed-author:WolffDD,
pubmed-author:WrightTT,
pubmed-author:KimuraNN
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