Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at sqrt(s) = 7 TeV

By The Cms Collaboration. 2010

174 citations recorded by the source corpus.

Charged-hadron transverse-momentum and pseudorapidity distributions in proton-proton collisions at ﬃﬃﬃ s p ¼ 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(cid:1) j j (cid:1) j < 0 : 5 ¼ 5 : 78 (cid:1) 0 : 01 ð stat Þ (cid:1) 0 : 23 ð syst Þ for non-single-diffractive events, higher than predicted by commonly used models. The relative increase in charged-particle multiplicity from ﬃﬃﬃ s p ¼ 0 : 9 to 7 TeV is ½ 66 : 1 (cid:1) 1 : 0 ð stat Þ (cid:1) 4 : 2 ð syst Þ(cid:2) % . The mean transverse momentum is measured to be 0 : 545 (cid:1) 0 : 005 ð stat Þ (cid:1) 0 : 015 ð syst Þ GeV =c . The results are compared with similar measurements at lower energies.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/dbaca47bf61b9229061ec45bec919899d8e88d8d

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In Nuclear and High Energy Physics

Citations in the corpus

Herwig 7.2 release note (2019, result): “8 Low transverse momentum spectrum of charged particles in non-single diffractive events with our old and new models for soft interactions compared to CMS data [40]”
Charged particle multiplicities in pp interactions at sqrt(s) = 0.9, 2.36, and 7 TeV (2010, methodology): “The trigger and offline event selection are nearly identical to those used in [47, 48]; about three times more events were used in this analysis at √ s = 0.”
Tuning PYTHIA 8.1: the Monash 2013 tune (2014, result): “Note also that the CMS measurement [92] shown in the top pane of Fig.”
String formation beyond leading colour (2015, background): “Figure 12: The average p⊥ as a function of multiplicity [52] (a), the average charged multiplicity as a function of pseudorapidity [113] (b), and the Λ/Ks ratio [114] (c).”
Observation and studies of jet quenching in PbPb collisions at nucleon-nucleon center-of-mass energy = 2.76 TeV (2011, methodology): “This last selection is identical to the one used for the study of charged hadron pseudorapidity density and pT spectrum in 7 TeV pp collisions [23].”