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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
2
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pubmed:dateCreated |
2010-9-27
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pubmed:abstractText |
Charged-hadron transverse-momentum and pseudorapidity distributions in proton-proton collisions at square root of s = 7 ?TeV are measured with the inner tracking system of the CMS detector at the LHC. The charged-hadron yield is obtained by counting the number of reconstructed hits, hit pairs, and fully reconstructed charged-particle tracks. The combination of the three methods gives a charged-particle multiplicity per unit of pseudorapidity dN(ch)/d?|(|?|<0.5) = 5.78 ± 0.01(stat) ± 0.23(syst) for non-single-diffractive events, higher than predicted by commonly used models. The relative increase in charged-particle multiplicity from square root of s = 0.9 to 7 TeV is [66.1 ± 1.0(stat) ± 4.2(syst)]%. The mean transverse momentum is measured to be 0.545 ± 0.005(stat) ± 0.015(syst)? GeV/c. The results are compared with similar measurements at lower energies.
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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 |
Jul
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pubmed:issn |
1079-7114
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pubmed:author |
pubmed-author:TuYY,
pubmed-author:VelascoMM,
pubmed-author:JonesMM,
pubmed-author:JenkinsMM,
pubmed-author:PopescuSS,
pubmed-author:SinghA PAP,
pubmed-author:KumarAA,
pubmed-author:SilvaPP,
pubmed-author:LisMM,
pubmed-author:RobertsJJ,
pubmed-author:JohnsonMM,
pubmed-author:WeberHH,
pubmed-author:BarnesBB,
pubmed-author:SmithR PRP,
pubmed-author:CostaMM,
pubmed-author:PaulDD,
pubmed-author:SanoKK,
pubmed-author:ThomasMM,
pubmed-author:WangC CCC,
pubmed-author:GórskiMM,
pubmed-author:TossGG,
pubmed-author:PapeLL,
pubmed-author:LundstedtCC,
pubmed-author:CoxBB,
pubmed-author:ThompsonJJ,
pubmed-author:KellerJJ,
pubmed-author:HarrisPP,
pubmed-author:StraussJJ,
pubmed-author:SimonSS,
pubmed-author:BanerjeeSS,
pubmed-author:AlexanderJJ,
pubmed-author:SundHH,
pubmed-author:CastroAA,
pubmed-author:GoldDD,
pubmed-author:LeeK SKS,
pubmed-author:MarchCC,
pubmed-author:KubotaYY,
pubmed-author:ThomsenJJ,
pubmed-author:HansenMM,
pubmed-author:YangYY,
pubmed-author:WilliamsGG,
pubmed-author:SmithJJ,
pubmed-author:WangJJ,
pubmed-author:YangMM,
pubmed-author:ChangY HYH,
pubmed-author:ChangSS,
pubmed-author:LinWW,
pubmed-author:HartmannFF,
pubmed-author:LinnSS,
pubmed-author:AdarUU,
pubmed-author:SolandTT,
pubmed-author:ButtJJ,
pubmed-author:SchmidtAA,
pubmed-author:ThomasSS,
pubmed-author:ColePP,
pubmed-author:SimonMM,
pubmed-author:ChatterjeeAA,
pubmed-author:HoMM,
pubmed-author:ShinM SMS,
pubmed-author:WagnerS RSR,
pubmed-author:HanJJ,
pubmed-author:SharmaRR,
pubmed-author:ContiAA,
pubmed-author:RoseAA,
pubmed-author:MartiniLL,
pubmed-author:GiordanoDD,
pubmed-author:WangDD,
pubmed-author:WeinbergerMM,
pubmed-author:LohmannWW,
pubmed-author:AndersonMM,
pubmed-author:SharmaSS,
pubmed-author:KimYY,
pubmed-author:WilliamsJ CJC,
pubmed-author:DavidAA,
pubmed-author:GillKK,
pubmed-author:AndersonJJ,
pubmed-author:LisHH,
pubmed-author:BanYY,
pubmed-author:ConwayJJ,
pubmed-author:MosesSS,
pubmed-author:SchmidtRR,
pubmed-author:MartinezGG,
pubmed-author:RoseKK,
pubmed-author:TeodorescuLL,
pubmed-author:BlochPP,
pubmed-author:WardSS
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