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133891 |
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|a Charged particle multiplicities in pp interactions at √ s = 0.9 , 2.36, and 7 TeV
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|b Springer Science and Business Media LLC,
|c 2021-10-27T19:57:06Z.
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|z Get fulltext
|u https://hdl.handle.net/1721.1/133891
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|a Measurements of primary charged hadron multiplicity distributions are presented for non-single-diffractive events in proton-proton collisions at centre-of-mass energies of √s = 0.9, 2.36, and 7TeV, in five pseudorapidity ranges from |η| < 0.5 to |η| < 2.4. The data were collected with the minimum-bias trigger of the CMS experiment during the LHC commissioning runs in 2009 and the 7TeV run in 2010. The multiplicity distribution at √s = 0.9 TeV is in agreement with previous measurements. At higher energies the increase of the mean multiplicity with √s is underestimated by most event generators. The average transverse momentum as a function of the multiplicity is also presented. The measurement of higher-order moments of the multiplicity distribution confirms the violation of Koba-Nielsen-Olesen scaling that has been observed at lower energies.
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|a Article
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|t 10.1007/JHEP01(2011)079
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| 773 |
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|t Journal of High Energy Physics
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