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| 題名: | Measurement of the elliptic anisotropy of charged particles produced in PbPb collisions at √sNN=2.76 TeV |
| 作者: | 張元翰;Chatrchyan, S.;Wagner, P.;Waltenberger, W.;Blyweert, S.;Correa Martins Junior, M.;Guo, S.;Li, W.;Besancon, M.;Fabbro, B.;Ferri, F.;Beaudette, F.;Paganini, P.;Sordini, V.;Edelhoff, M.;Klimkovich, T.;Burgmeier, A.;Costanza, F.;Kasemann, M.;Stadie, H.;Steinbrück, G.;De Boer, W.;Ratnikov, F.;Manthos, N.;Szillasi, Z.;Bhatnagar, V.;Sharma, V.;Ganguly, S.;Chhibra, S. S.;Castro, A.;Meneghelli, M.;Sguazzoni, G.;Gennai, S.;Kanishchev, K.;Simonetto, F.;Broccolo, G.;Demaria, N.;Solano, A.;Kim, T. Y.;Kim, M. S.;De La Cruz-Burelo, E.;Martínez-Ortega, J.;Khalid, S.;Bargassa, P.;Kim, V.;Klyukhin, V.;Azhgirey, I.;Grishin, V.;Bernet, C.;Frisch, B.;Innocente, V.;Meschi, E.;Perez, E.;Sakulin, H.;Horisberger, R.;Kaestli, H. C.;Sibille, J.;Robmann, P.;Cerci, S.;Cussans, D.;Williams, T.;Hays, J.;Cole, J. E.;Henderson, C.;Cline, D.;Paramesvaran, S.;Ranieri, R.;Kalavase, P.;Mott, A.;Jang, D. W.;Gibbons, L. K.;Hopkins, W.;Thom, J.;Vaughan, J.;Harris, R. M.;Kilminster, B.;Sharma, S.;Wu, W.;Fu, Y.;Linn, S.;Rodriguez, J. L.;Apanasevich, L.;Moeller, A.;Onel, Y.;Rappoccio, S.;Kenny Iii, R. P.;Peterman, A.;Bendavid, J.;Paus, C.;Wenger, E. A.;Mans, J.;Kroeger, R.;Wayne, M.;Zablocki, J.;Han, J.;Korjenevski, S.;Lath, A.;Rekovic, V.;Pakhotin, Y.;Lin, C.;Belknap, D. |
| 貢獻者: | 理學院物理學系 |
| 日期: | 2013-01-07 |
| 上傳時間: | 2026-04-23 12:14:05 (UTC+8) |
| 出版者: | American Physical Society;United States: American Physical Society (APS) |
| 摘要: | 摘要： The anisotropy of the azimuthal distributions of charged particles produced in sNN=2.76 TeV PbPb collisions is studied with the CMS experiment at the LHC. The elliptic anisotropy parameter, v2, defined as the second coefficient in a Fourier expansion of the particle invariant yields, is extracted using the event-plane method, two- and four-particle cumulants, and Lee-Yang zeros. The anisotropy is presented as a function of transverse momentum (pT), pseudorapidity (η) over a broad kinematic range, 0.3<pT<20 GeV/c, |η|<2.4, and in 12 classes of collision centrality from 0 to 80%. The results are compared to those obtained at lower center-of-mass energies, and various scaling behaviors are examined. When scaled by the geometric eccentricity of the collision zone, the elliptic anisotropy is found to obey a universal scaling with the transverse particle density for different collision systems and center-of-mass energies.
出版者： United States: American Physical Society (APS)
出版日期： 2013-01-07
出處： Physical Review C, Nuclear Physics, 2013-01, Vol.87 (1), Article 014902
識別號： ISSN: 0556-2813
識別號： EISSN: 1089-490X
識別號： DOI: 10.1103/PhysRevC.87.014902 |
| 顯示於類別: | [物理學系] 期刊論文
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