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Article
Report number arXiv:1512.00439 ; LHCB-PAPER-2015-040 ; CERN-PH-EP-2015-308 ; LHCB-PAPER-2015-040 ; CERN-PH-EP-2015-308
Title Measurements of long-range near-side angular correlations in sNN=5TeV proton-lead collisions in the forward region
Author(s) LHCb collaboration  Visualizza tutti i 736 autori
Publication 2016-11-10
Imprint 01 Dec 2015
Number of pages 11
Note All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2015-040.html
In: Phys. Lett. B 762 (2016) 473-483
DOI 10.1016/j.physletb.2016.09.064
Subject category Nuclear Physics - Experiment ; Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords relativistic heavy ion physics ; particle correlations and fluctuations ; experimental results
Abstract Two-particle angular correlations are studied in proton-lead collisions at a nucleon-nucleon centre-of-mass energy of sNN=5TeV, collected with the LHCb detector at the LHC. The analysis is based on data recorded in two beam configurations, in which either the direction of the proton or that of the lead ion is analysed. The correlations are measured as a function of relative pseudorapidity, Δη, and relative azimuthal angle, Δϕ, for events in different classes of event activity and for different bins of particle transverse momentum. In high-activity events a long-range correlation on the near side, Δϕ0, is observed in the pseudorapidity range 2.0<η<4.9. This measurement of long-range correlations on the near side in proton-lead collisions extends previous observations into the forward region up to η=4.9. The correlation increases with growing event activity and is found to be more pronounced in the direction of the lead beam. However, the correlation strengths in the direction of the lead and proton beams are found to be compatible when comparing events with similar absolute activity in the direction analysed.
Related document supersedes: LHCb-CONF-2015-004
Copyright/License publication: © 2016-2024 CERN (License: CC-BY-4.0), sponsored by SCOAP³
preprint: © 2015-2024 CERN (License: CC-BY-4.0)



Corresponding record in: Inspire
Email contact: george.lafferty@manchester.ac.uk


 Record creato 2015-12-03, modificato l'ultima volta il 2024-08-17


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