Charged particle multiplicities in pp interactions at √s = 0.9, 2.36, and 7TeV

D Sillou; M Besancon; M Dejardin; D Denegri; B Fabbro; J. L Faure; F Ferri; S Ganjour; F. X Gentit; A Givernaud; P Gras; G Hamel Monchenault; P Jarry; E Locci; J Malcles; M Marionneau; L Millischer; J Rander; A Rosowsky; I Shreyber; M Titov; P Verrecchia; S Baffioni; F Beaudette; L Bianchini; M Bluj; C Broutin; Pierre Busson; C Charlot; L Dobrzynski; R Granier Cassagnac; M Haguenauer; P Mine; C Mironov; C Ochando; P Paganini; S Porteboeuf; D Sabes; R Salerno; Y Sirois; C Thiebaux; A Zabi; J. -L Agram; J Andrea; A Besson; D Bloch; D Bodin; J. -M Brom; M Cardaci; E. C Chabert; C Collard; E Conte; F Drouhin; C Ferro; J. -C Fontaine; D Gele; U Goerlach; S Greder; P Juillot; M Karim; A. -C Le Bihan; Y Mikami; P Hove; F Fassi; D Mercier; C Baty; N Beaupere; M Bedjidian; O Bondu; G Boudoul; D Boumediene; H Brun; N Chanon; R Chierici; D Contardo; P Depasse; H El Mamouni; A Falkiewicz; J Fay; S Gascon; B Ille; T Kurca; T Le Grand; M Lethuillier; L Mirabito; S Perries; V Sordini; S Tosi; Y Tschudi; P Verdier; H Xiao; CMS Collaboration

doi:10.1007/JHEP01(2011)079

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Charged particle multiplicities in pp interactions at √s = 0.9, 2.36, and 7TeV

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Charged particle multiplicities in pp interactions at √s = 0.9, 2.36, and 7TeV

D Sillou, M Besancon, M Dejardin, D Denegri, B Fabbro, J. L Faure, F Ferri, S Ganjour, F. X Gentit, A Givernaud, …

The journal of high energy physics, Vol.2011(1), 79

01/01/2011

DOI: 10.1007/JHEP01(2011)079

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Abstract

Measurements of primary charged hadron multiplicity distributions are presented for non-single-diffractive events in proton-proton collisions at centre-of-mass energies of sqrt(s) = 0.9, 2.36, and 7 TeV, in five pseudorapidity ranges from |eta|<0.5 to |eta|<2.4. The data were collected with the minimum-bias trigger of the CMS experiment during the LHC commissioning runs in 2009 and the 7 TeV run in 2010. The multiplicity distribution at sqrt(s) = 0.9 TeV is in agreement with previous measurements. At higher energies the increase of the mean multiplicity with sqrt(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. Measurements of primary charged hadron multiplicity distributions are presented for non-single-diffractive events in proton-proton collisions at centre-of-mass energies of sqrt(s) = 0.9, 2.36, and 7 TeV, in five pseudorapidity ranges from |eta|<0.5 to |eta|<2.4. The data were collected with the minimum-bias trigger of the CMS experiment during the LHC commissioning runs in 2009 and the 7 TeV run in 2010. The multiplicity distribution at sqrt(s) = 0.9 TeV is in agreement with previous measurements. At higher energies the increase of the mean multiplicity with sqrt(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.

High Energy Physics

Particle Physics

Physics

530 Physics

Compact Muon Solenoid

E+E

Experiment

Fizikai tudományok

Física

Hadron

Hadron Scattering

Koba

Large Hadron Collider (LHC)

Nielsen

Nuclear

Nuclear Experiment

Olesen scaling

Physics Institute

Physique des particules élémentaires

Természettudományok

Details

Title: Subtitle: Charged particle multiplicities in pp interactions at √s = 0.9, 2.36, and 7TeV
Creators: D Sillou
M Besancon
M Dejardin
D Denegri
B Fabbro
J. L Faure
F Ferri
S Ganjour
F. X Gentit
A Givernaud
P Gras
G Hamel Monchenault
P Jarry
E Locci
J Malcles
M Marionneau
L Millischer
J Rander
A Rosowsky
I Shreyber
M Titov
P Verrecchia
S Baffioni - École Polytechnique
F Beaudette - École Polytechnique
L Bianchini - École Polytechnique
M Bluj - École Polytechnique
C Broutin - École Polytechnique
Pierre Busson - École Polytechnique
C Charlot - École Polytechnique
L Dobrzynski - École Polytechnique
R Granier Cassagnac
M Haguenauer - École Polytechnique
P Mine - École Polytechnique
C Mironov - École Polytechnique
C Ochando - École Polytechnique
P Paganini - École Polytechnique
S Porteboeuf - École Polytechnique
D Sabes - École Polytechnique
R Salerno - École Polytechnique
Y Sirois - École Polytechnique
C Thiebaux - École Polytechnique
A Zabi - École Polytechnique
J. -L Agram - University of Strasbourg
J Andrea - University of Strasbourg
A Besson - University of Strasbourg
D Bloch - University of Strasbourg
D Bodin - University of Strasbourg
J. -M Brom - University of Strasbourg
M Cardaci - University of Strasbourg
E. C Chabert - University of Strasbourg
C Collard - University of Strasbourg
E Conte - University of Strasbourg
F Drouhin - University of Strasbourg
C Ferro - University of Strasbourg
J. -C Fontaine - University of Strasbourg
D Gele - University of Strasbourg
U Goerlach - University of Strasbourg
S Greder - University of Strasbourg
P Juillot - University of Strasbourg
M Karim - University of Strasbourg
A. -C Le Bihan - University of Strasbourg
Y Mikami - University of Strasbourg
P Hove
F Fassi
D Mercier
C Baty - Claude Bernard University Lyon 1
N Beaupere - Claude Bernard University Lyon 1
M Bedjidian - Claude Bernard University Lyon 1
O Bondu - Claude Bernard University Lyon 1
G Boudoul - Claude Bernard University Lyon 1
D Boumediene - Claude Bernard University Lyon 1
H Brun - Claude Bernard University Lyon 1
N Chanon - Claude Bernard University Lyon 1
R Chierici - Claude Bernard University Lyon 1
D Contardo - Claude Bernard University Lyon 1
P Depasse - Claude Bernard University Lyon 1
H El Mamouni - Claude Bernard University Lyon 1
A Falkiewicz - Claude Bernard University Lyon 1
J Fay - Claude Bernard University Lyon 1
S Gascon - Claude Bernard University Lyon 1
B Ille - Claude Bernard University Lyon 1
T Kurca - Claude Bernard University Lyon 1
T Le Grand - Claude Bernard University Lyon 1
M Lethuillier - Claude Bernard University Lyon 1
L Mirabito - Claude Bernard University Lyon 1
S Perries - Claude Bernard University Lyon 1
V Sordini - Claude Bernard University Lyon 1
S Tosi - Claude Bernard University Lyon 1
Y Tschudi - Claude Bernard University Lyon 1
P Verdier - Claude Bernard University Lyon 1
H Xiao - Claude Bernard University Lyon 1
CMS Collaboration
Contributors: C. R Newsom (Contributor) - University of Iowa, Physics and Astronomy
Y Onel (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: The journal of high energy physics, Vol.2011(1), 79
Publisher: Springer Verlag
DOI: 10.1007/JHEP01(2011)079
ISSN: 1029-8479
eISSN: 1029-8479
Language: English
Date published: 01/01/2011
Academic Unit: Physics and Astronomy
Record Identifier: 9984200035402771

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