Measurements of long-range near-side angular correlations in √sNN=5TeV proton-lead collisions in the forward region

被引：78

作者：

Aaij, R. ^{[40
]}

Beteta, C. Abellan ^{[42
]}

Adeva, B. ^{[39
]}

Adinolfi, M. ^{[48
]}

Affolder, A. ^{[54
]}

Ajaltouni, Z. ^{[5
]}

Akar, S. ^{[6
]}

Albrecht, J. ^{[10
]}

Alessio, F. ^{[40
]}

Alexander, M. ^{[53
]}

Ali, S. ^{[43
]}

Alkhazov, G. ^{[31
]}

Cartelle, P. Alvarez ^{[55
]}

Alves, A. A. ^{[59
]}

Amato, S. ^{[2
]}

Amerio, S. ^{[23
]}

Amhis, Y. ^{[7
]}

An, L. ^{[3
]}

Anderlini, L. ^{[18
]}

Anderson, J. ^{[42
]}

Andreassi, G. ^{[41
]}

Andreotti, M. ^{[17
,75
]}

Andrews, J. E. ^{[60
]}

Appleby, R. B. ^{[56
]}

Gutierrez, O. Aquines ^{[11
]}

Archilli, F. ^{[40
]}

d'Argent, P. ^{[12
]}

Artamonov, A. ^{[37
]}

Artuso, M. ^{[61
]}

Aslanides, E. ^{[6
]}

Auriemma, G. ^{[26
,82
]}

Baalouch, M. ^{[5
]}

Bachmann, S. ^{[12
]}

Back, J. J. ^{[50
]}

Badalov, A. ^{[38
]}

Baesso, C. ^{[2
,62
]}

Baldini, W. ^{[17
,40
]}

Barlow, R. J. ^{[56
]}

Barschel, C. ^{[40
]}

Barsuk, S. ^{[7
]}

Barter, W. ^{[40
]}

Batozskaya, V. ^{[29
]}

Battista, V. ^{[41
]}

Bay, A. ^{[41
]}

Beaucourt, L. ^{[4
]}

Beddow, J. ^{[53
]}

Bedeschi, F. ^{[24
]}

Bediaga, I. ^{[1
]}

Bel, L. J. ^{[43
]}

Bellee, V. ^{[41
]}

机构：

[1] CBPF, Rio De Janeiro, Brazil

[2] Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil

[3] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China

[4] Univ Savoie Mt Blanc, CNRS, IN2P3, LAPP, Annecy Le Vieux, France

[5] Univ Blaise Pascal, Clermont Univ, CNRS, IN2P3, Clermont Ferrand, France

[6] Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France

[7] Univ Paris Sud, CNRS, IN2P3, LAL, Orsay, France

[8] Univ Paris Diderot, Univ Pierre & Marie Curie, LPNHE, CNRS,IN2P3, Paris, France

[9] Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany

[10] Tech Univ Dortmund, Fak Phys, Dortmund, Germany

[11] Max Planck Inst Kernphys, Heidelberg, Germany

[12] Heidelberg Univ, Phys Inst, Heidelberg, Germany

[13] Univ Coll Dublin, Sch Phys, Dublin, Ireland

[14] Sez INFN Bari, Bari, Italy

[15] Sez INFN Bologna, Bologna, Italy

[16] Sez INFN Cagliari, Cagliari, Italy

[17] Sez INFN Ferrara, Ferrara, Italy

[18] Sez INFN Firenze, Florence, Italy

[19] INFN Frascati, Lab Nazl, Frascati, Italy

[20] Sez INFN Genova, Genoa, Italy

[21] Sez INFN Milano Bicocca, Milan, Italy

[22] Sez INFN Milano, Milan, Italy

[23] Sez INFN Padova, Padua, Italy

[24] Sez INFN Pisa, Pisa, Italy

[25] Sez INFN Roma Tor Vergata, Rome, Italy

[26] Sez INFN Roma La Sapienza, Rome, Italy

[27] Phys Polish Acad Sci, Henryk Niewodniczanski Inst Nucl, Krakow, Poland

[28] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland

[29] Natl Ctr Nucl Res NCBJ, Warsaw, Poland

[30] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania

[31] PNPI, Gatchina, Russia

[32] Inst Theoret & Expt Phys, Moscow, Russia

[33] Moscow State Univ SINP MSU, Inst Nucl Phys, Moscow, Russia

[34] Russian Acad Sci INR RAN, Inst Nucl Res, Moscow, Russia

[35] Budker Inst Nucl Phys SB RAS, Novosibirsk, Russia

[36] Novosibirsk State Univ, Novosibirsk, Russia

[37] IHEP, Protvino, Russia

[38] Univ Barcelona, Barcelona, Spain

[39] Univ Santiago de Compostela, Santiago De Compostela, Spain

[40] European Org Nucl Res CERN, Geneva, Switzerland

[41] Ecole Polytech Fed Lausanne, Lausanne, Switzerland

[42] Univ Zurich, Phys Inst, Zurich, Switzerland

[43] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands

[44] Vrije Univ Amsterdam, Amsterdam, Netherlands

[45] NSC Kharkiv Inst Phys & Technol NSC KIPT, Kharkov, Ukraine

[46] Natl Acad Sci KINR, Inst Nucl Res, Kiev, Ukraine

[47] Univ Birmingham, Birmingham, W Midlands, England

[48] Univ Bristol, HH Wills Phys Lab, Bristol, Avon, England

[49] Univ Cambridge, Cavendish Lab, Cambridge, England

[50] Univ Warwick, Dept Phys, Coventry, W Midlands, England

来源：

PHYSICS LETTERS B | 2016年 / 762卷

关键词：

P-PB COLLISIONS; FLOW;

D O I：

10.1016/j.physletb.2016.09.064

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：473 / 483

页数：11

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