Measurement of long-range angular correlation and quadrupole anisotropy of pions and (anti)protons in central d+Au collisions at sNN =200 GeV

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Title:	Measurement of long-range angular correlation and quadrupole anisotropy of pions and (anti)protons in central d+Au collisions at sNN =200 GeV
Authors:	彭仁傑;Alexander, J.;Andrews, K. R.;Angerami, A.;Awes, T. C.;Barish, K. N.;Basye, A. T.;Blau, D. S.;Boyle, K.;Buesching, H.;Choudhury, R. K.;Citron, Z.;Conesa del Valle, Z.;Connors, M.;Csanád, M.;Danchev, I.;Das, K.;Denisov, A.;Dietzsch, O.;Drees, A.;Drees, K. A.;Durum, A.;Engelmore, T.;Enokizono, A.;Esumi, S.;Fraenkel, Z.;Frawley, A. D.;Fujiwara, K.;Fukao, Y.;Garishvili, I.;Grau, N.;Grosse Perdekamp, M.;Haggerty, J. S.;Han, R.;Hemmick, T. K.;Homma, K.;Hori, Y.;Hornback, D.;Huang, S.;Isenhower, D.;Kajihara, F.;Kaneti, S.;Karatsu, K.;Kawashima, M.;Kim, D. J.;Kistenev, E.;Koster, J.;Kwon, Y.;Lacey, R.;Lebedev, A.;Lee, J.;Leite, M. A. L.;Linden Levy, L. A.;Liu, H.;Malik, M. D.;Matathias, F.;Mendoza, M.;Mignerey, A. C.;Mitchell, J. T.;Morino, Y.;Morreale, A.;Nagle, J. L.;Nagy, M. I.;Nakagawa, I.;Nakamiya, Y.;Nihashi, M.;Nyanin, A. S.;Ouchida, M.;Park, S. K.;Park, W. J.;Pate, S. F.;Petti, R.;Proissl, M.;Purschke, M. L.;Ravinovich, I.;Reygers, K.;Riabov, Y.;Roach, D.;Rosendahl, S. S. E.;Ružička, P.;Sato, T.;Sedgwick, K.;Shoji, K.;Shukla, P.;Silva, C. L.;Silvermyr, D.;Slunečka, M.;Soltz, R. A.;Stenlund, E.;Taketani, A.;Tanabe, R.;Tanaka, Y.;Taneja, S.;Tanida, K.;Watanabe, K.;Wei, F.;Wei, R.;Wessels, J.;Yamaguchi, Y. L.;Yang, R.;Zajc, W. A.
Contributors:	高能與強場物理研究中心
Keywords:	angular;Angular correlation;anisotopy;Anisotropy;Charging;Collisions;correlation;Energy measurement;Hadrons;Hydrodynamics;Order disorder;quadrupole
Date:	2015-05-12
Issue Date:	2026-04-23 12:04:05 (UTC+8)
Publisher:	American Physical Society;United States: American Physical Society (APS)
Abstract:	摘要： We present azimuthal angular correlations between charged hadrons and energy deposited in calorimeter towers in central d+Au and minimum bias p+p collisions at sNN=200 GeV. The charged hadron is measured at midrapidity \|[eta]\|<0.35, and the energy is measured at large rapidity (-3.7<[eta]< -3.1, Au-going direction). An enhanced near-side angular correlation across \| Delta [eta]\|>2.75 is observed in d+Au collisions. Using the event plane method applied to the Au-going energy distribution, we extract the anisotropy strength v2 for inclusive charged hadrons at midrapidity up to pT=4.5 GeV/c. We also present the measurement of v2 for identified [pi]+ or - and (anti)protons in central d+Au collisions, and observe a mass-ordering pattern similar to that seen in heavy-ion collisions. These results are compared with viscous hydrodynamic calculations and measurements from p+Pb at sNN=5.02 TeV. The magnitude of the mass ordering in d+Au is found to be smaller than that in p+Pb collisions, which may indicate smaller radial flow in lower energy d+Au collisions. 出版者： United States: American Physical Society (APS) 出版日期： 2015-05-12 出處： Physical Review Letters, 2015-05, Vol.114 (19), Article 192301 資源來源： American Physical Society Journals 識別號： ISSN: 0031-9007 識別號： EISSN: 1079-7114 識別號： DOI: 10.1103/PhysRevLett.114.192301
Appears in Collections:	[Center for High Energy and High Field Physics (CHiP)] journal & Dissertation

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