ATLAS first results: charged-particle multiplicities in pp interactions at √s = 900 GeV

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

The first physics results from pp collisions measured with the ATLAS detector [1] at the Large Hadron Collider (LHC) [2] are presented. The analysis within the kinematic range pT > 500 MeV, |η| < 2.5, and at least one charged-particle in this range, is summarised. The charged-particle multiplicity per event and unit of pseudorapidity at η = 0 is measured to be 1.333±0.003(stat.)±0.040(syst.), which is 5–15% higher than the Monte Carlo model predictions.
Original languageEnglish
Title of host publicationProceedings 45th Rencontres de Moriond on QCD and High Energy Interactions
EditorsEtienne Augé, Jacques Dumarchez, Bolek Pietrzyk, Jean Trân Thanh Vân
Number of pages4
Publication statusPublished - 20 Mar 2010
Event45th Rencontres de Moriond on QCD and High Energy Interactions 2010 - La Thuile, Italy
Duration: 13 Mar 201020 Mar 2010

Conference

Conference45th Rencontres de Moriond on QCD and High Energy Interactions 2010
CountryItaly
CityLa Thuile
Period13/03/1020/03/10

Keywords

  • ATLAS detector
  • Large Hadron Collider (LHC)

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