Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2506
Title: Observation of long-range, near-side angular correlations in proton-proton collisions at the LHC
Authors: Demir, Durmuş Ali
CMS Collaboration
Keywords: Hadron-hadron scattering
CMS detectors
Large Hadron Collider (LHC)
Quantum Chromodynamics (QCD)
Issue Date: 2010
Publisher: Springer Verlag
Source: Khachatryan, V., Sirunyan, A. M., Tumasyan, A., Adam. W., ...CMS Collaboration (2010). Observation of long-range, near-side angular correlations in proton-proton collisions at the LHC. Journal of High Energy Physics, 2010(9). doi:10.1007/JHEP09(2010)091
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 7TeV 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 7TeV. In high multiplicity events, a pronounced structure emerges in the two-dimensional correlation function for particle pairs with intermediate px of 1-3 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 pp̄ collisions.
URI: http://doi.org/10.1007/JHEP09(2010)091
http://hdl.handle.net/11147/2506
ISSN: 1029-8479
1029-8479
Appears in Collections:Physics / Fizik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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