期刊
PHYSICS LETTERS B
卷 762, 期 -, 页码 473-483出版社
ELSEVIER
DOI: 10.1016/j.physletb.2016.09.064
关键词
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资金
- CERN
- CAPES (Brazil)
- CNPq (Brazil)
- FAPERJ (Brazil)
- FINEP (Brazil)
- NSFC (China)
- CNRS/IN2P3 (France)
- BMBF (Germany)
- DFG (Germany)
- MPG (Germany)
- INFN (Italy)
- FOM (The Netherlands)
- NWO (The Netherlands)
- MNiSW (Poland)
- NCN (Poland)
- MEN/IFA (Romania)
- MinES (Russia)
- FANO (Russia)
- MINECO (Spain)
- SNSF (Switzerland)
- SER (Switzerland)
- NASU (Ukraine)
- STFC (United Kingdom)
- NSF (USA)
- AvH Foundation (Germany)
- EPLANET (European Union)
- Marie Sklodowska-Curie Actions (European Union)
- ERC (European Union)
- Conseil General de Haute-Savoie (France)
- Labex ENIGMASS (France)
- OCEVU (France)
- Region Auvergne (France)
- RFBR (Russia)
- GVA (Spain)
- XuntaGal (Spain)
- GENCAT (Spain)
- Royal Society and Royal Commission for the Exhibition of 1851 (United Kingdom)
- STFC [ST/L003392/1, ST/H006737/1, ST/L003341/1, ST/N001370/1, ST/N001389/1, ST/L003538/1, ST/K00140X/1, ST/M004058/1, ST/N000234/1, ST/J004332/1, ST/K003410/1, ST/K004646/1, LHCb Upgrades, LHCb] Funding Source: UKRI
- Science and Technology Facilities Council [1565032, 1415632, LHCb Upgrades, ST/L003538/1, ST/N000250/1, 1416165, 1514623, ST/M004058/1, ST/K00140X/1, 1564711, ST/K004646/1, LHCb, ST/N001370/1, GRIDPP, ST/J004332/1, ST/K003410/1, 1369397, ST/H006737/1, 1565116] Funding Source: researchfish
Two-particle angular correlations are studied in proton-lead collisions at a nucleon-nucleon centre-ofmass energy of root sNN= 5 TeV, 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 in the laboratory system as a function of relative pseudorapidity, Delta eta, and relative azimuthal angle, Delta phi, 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, Delta phi approximate to 0, is observed in the pseudorapidity range 2.0 < eta < 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 eta= 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 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. (C) 2016 The Author. Published by Elsevier B.V.
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