Publication
Title
Observation of long-range, near-side angular correlations in proton-proton collisions at the LHC
Author
Institution/Organisation
CMS Collaboration
Abstract
 Results on two-particle angular correlations for charged particles emitted in proton-proton collisions at center-of-mass energies of 0.9, 2.36, and 7 TeV are presented, using data collected with the CMS detector over a broad range of pseudorapidity (η) and azimuthal angle (ϕ). Short-range correlations in Δη, which are studied in minimum bias events, are characterized using a simple independent cluster parametrization in order to quantify their strength (cluster size) and their extent in η (cluster decay width). Long-range azimuthal correlations are studied differentially as a function of charged particle multiplicity and particle transverse momentum using a 980 nb−1 data set at 7 TeV. In high multiplicity events, a pronounced structure emerges in the two-dimensional correlation function for particle pairs with intermediate p T of 13 GeV/c, 2.0 < |Δη| < 4.8 and Δϕ ≈ 0. This is the first observation of such a long-range, near-side feature in two-particle correlation functions in pp or $$p\overline p$$ collisions.
Language
English
Source (journal)
Journal of high energy physics. - Bristol
Publication
Bristol : 2010
ISSN
1126-6708
1029-8479 [online]
Volume/pages
9(2010), p. 1-38
Article Reference
91
ISI
000282371300025
Medium
E-only publicatie
Full text (Publishers DOI)
Full text (publishers version - intranet only)
UAntwerpen
 Faculty/Department Research group Publication type Subject Affiliation Publications with a UAntwerp address
External links
 Web of Science
Record
 Identification Creation 26.01.2011 Last edited 09.05.2017 To cite this reference