Abstract
Results on two-particle angular correlations for charged particles produced in collisions at a center-of-mass energy of 13 TeV are presented. The data were taken with the CMS detector at the LHC and correspond to an integrated luminosity of about . The correlations are studied over a broad range of pseudorapidity () and over the full azimuth () as a function of charged particle multiplicity and transverse momentum (). In high-multiplicity events, a long-range (), near-side () structure emerges in the two-particle – correlation functions. The magnitude of the correlation exhibits a pronounced maximum in the range and an approximately linear increase with the charged particle multiplicity, with an overall correlation strength similar to that found in earlier data at . The present measurement extends the study of near-side long-range correlations up to charged particle multiplicities , a region so far unexplored in collisions. The observed long-range correlations are compared to those seen in , , and PbPb collisions at lower collision energies.
- Received 11 October 2015
DOI:https://doi.org/10.1103/PhysRevLett.116.172302
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© 2016 CERN, for the CMS Collaboration