Number of the records: 1

Charged-particle multiplicity density at midrapidity in central Pb-Pb collisions at √s_NN=2.76 TeV

SYSNO ASEP	0365494
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Charged-particle multiplicity density at midrapidity in central Pb-Pb collisions at √s_NN=2.76 TeV
Author(s)	Aamodt, K. (NO) Abelev, B. (US) Quintana, A.A. (CU) Adamová, Dagmar (UJF-V)_{RID, ORCID, SAI} Bielčíková, Jana (UJF-V)_{RID, ORCID, SAI} Kushpil, Svetlana (UJF-V)_{RID, ORCID, SAI} Kushpil, Vasilij (UJF-V)_{ORCID, SAI} Mareš, Jiří A. (FZU-D)_{RID, ORCID} Polák, Karel (FZU-D) Šumbera, Michal (UJF-V)_{RID, ORCID, SAI} Závada, Petr (FZU-D)_{RID, ORCID}
Number of authors	914
Source Title	Physical Review Letters. - : American Physical Society - ISSN 0031-9007 Roč. 105, č. 25 (2010), "252301-1"-"252301-11"
Number of pages	11 s.
Language	eng - English
Country	US - United States
Keywords	ALICE ; CERN ; Pb+Pb collisions
Subject RIV	BF - Elementary Particles and High Energy Physics
R&D Projects	LA08015 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z10100502 - FZU-D (2005-2011)
	AV0Z10480505 - UJF-V (2005-2011)
UT WOS	000286750400007
DOI	10.1103/PhysRevLett.105.252301
Annotation	The first measurement of the charged-particle multiplicity density at midrapidity in Pb-Pb collisions at a center-of-mass energy per nucleon pair √s_NN=2.76 TeV is presented. For an event sample corresponding to the most central 5% of the hadronic cross section, the pseudorapidity density of primary charged particles at midrapidity is 1584±4(stat)±76(syst), which corresponds to 8.3±0.4(syst) per participating nucleon pair. This represents an increase of about a factor 1.9 relative to pp collisions at similar collision energies, and about a factor 2.2 to central Au-Au collisions at √sNN=0.2 TeV. This measurement provides the first experimental constraint for models of nucleus-nucleus collisions at LHC energies.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2012

Number of the records: 1