Measurement of charged-particle spectra in Pb+Pb collisions at √sNN =2.76 TeV with the ATLAS detector at the LHC

ATLAS, Collaboration; Beck, Hans Peter; Cervelli, Alberto; Ereditato, Antonio; Haug, Sigve; Kabana, Sonja; Meloni, Federico; Mullier, Geoffrey André Adrien; Pretzl, Klaus-Peter; Stramaglia, Maria Elena; Stucci, Stefania; Weber, Michael (2015). Measurement of charged-particle spectra in Pb+Pb collisions at √sNN =2.76 TeV with the ATLAS detector at the LHC. Journal of High Energy Physics, 9(9), p. 50. Springer 10.1007/JHEP09(2015)050

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Charged-particle spectra obtained in 0.15 nb¯¹ of Pb+Pb interactions at √sNN =2.76 TeV and 4.2 pb¯¹ of pp interactions at √s =2.76 TeV with the ATLAS detector at the LHC are presented in a wide transverse momentum (0.5<pT <150 GeV) and pseudorapidity (|η|<2 ) range. For Pb+Pb collisions, the spectra are presented as a function of collision centrality, which is determined by the response of the forward calorimeter located on both sides of the interaction point. The nuclear modification factors RAA and RCP are presented in detail as function of centrality, pT and η. They show a distinct pT-dependence with a pronounced minimum at about 7 GeV. Above 60 GeV, RAA is consistent with a plateau at a centrality-dependent value, within the uncertainties. The value is 0.55±0.01(stat.)±0.04(syst.) in the most central collisions. The RAA distribution is consistent with flat |η| dependence over the whole transverse momentum range in all centrality classes.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Beck, Hans Peter; Cervelli, Alberto; Ereditato, Antonio; Haug, Sigve; Meloni, Federico; Mullier, Geoffrey André Adrien; Pretzl, Klaus-Peter; Stramaglia, Maria Elena; Stucci, Stefania and Weber, Michael

Subjects:

500 Science > 530 Physics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Annette Krebs-Wegenast

Date Deposited:

07 Sep 2016 12:30

Last Modified:

11 Sep 2016 02:11

Publisher DOI:

10.1007/JHEP09(2015)050

ArXiv ID:

1504.04337

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt

BORIS DOI:

10.7892/boris.87632

URI:

https://boris.unibe.ch/id/eprint/87632

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