Long-Range Near-Side Angular Correlations in Proton-Proton Interactions in CMS.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2010 |
ISBN-10 | : OCLC:940486886 |
ISBN-13 | : |
Rating | : 4/5 (86 Downloads) |
Book excerpt: The CMS Collaboration 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 over a broad range of pseudorapidity and azimuthal angle (f) are presented using data collected with the CMS detector at the LHC. Short-range correlations in??, which are studied in minimum bias events, are characterized using a simple independent cluster parameterization in order to quantify their strength (cluster size) and their extent in? (cluster decay width). Long-range azimuthal correlations are studied more differentially as a function of charged particle multiplicity and particle transverse momentum using a 980nb-1 data set at 7TeV. In high multiplicity events, a pronounced structure emerges in the two-dimensional correlation function for particles in intermediate pT's of 1-3GeV/c, 2.0>