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| 題名: | Modification of jet shapes in PbPb collisions at sNN=2.76TeV |
| 作者: | 郭家銘;Chatrchyan, S.;Waltenberger, W.;Roland, B.;Van Onsem, G.P.;Vander Velde, C.;Pagano, D.;Vizan Garcia, J.M.;Malbouisson, H.;Dimitrov, A.;Pavlov, B.;Bian, J.G.;Tao, J.;Sanabria, J.C.;Lelas, D.;Ellithi Kamel, A.;Nayak, A.;Charlot, C.;Dahms, T.;Zabi, A.;Agram, J.-L.;Lethuillier, M.;Sordini, V.;Autermann, C.;Bontenackels, M.;Erdmann, M.;Haj Ahmad, W.;Bell, A.J.;Calligaris, L.;Costanza, F.;Lange, W.;Riedl, C.;Blobel, V.;Gebbert, U.;Haller, J.;Böser, C.;Hoffmann, K.H.;Geralis, T.;Naimuddin, M.;Ranjan, K.;Saxena, P.;Kole, G.;Iaselli, G.;Capiluppi, P.;Montanari, A.;Tricomi, A.;Ragazzi, S.;De Cosa, A.;Lacaprara, S.;Foà, L.;Meridiani, P.;Casasso, S.;Mariotti, C.;Khurshid, T.;Epshteyn, V.;Popov, V.;Ryutin, R.;Redondo, I.;Gomez, G.;Gonzalez Sanchez, J.;Lopez Virto, A.;Scodellaro, L.;Auffray, E.;Botta, C.;Christiansen, T.;Musella, P.;Sakulin, H.;Vlimant, J.R.;Gabathuler, K.;Hall, G.;Lucas, R.;Martin, W.;Ferapontov, A.;Landsberg, G.;Ko, W.;Lander, R.;Gary, J.W.;Barge, D.;Wagner, S.R.;Anderson, J.;Bauerdick, L.A.T.;Hewamanage, S.;Linn, S.;Rodriguez, J.L.;Turner, P.;Swartz, M.;Baringer, P.;Marionneau, M.;Apyan, A.;Sanders, D.A.;Wan, Z.;Pearson, T.;Yoo, H.D.;Ecklund, K.M.;Betchart, B.;Gershtein, Y.;Thomassen, P.;Eusebi, R.;Flanagan, W.;Arenton, M.W.;Friis, E. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | Algorithms;CMS;Collisions;Elementary particles;Heavy ion physics;HEP;High Energy Physics;Jet shapes;Lead (metal);Luminosity;PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;Radial distribution;Showers;Transverse momentum |
| 日期: | 2014-03-07 |
| 上傳時間: | 2026-04-23 12:30:41 (UTC+8) |
| 出版者: | Elsevier;Netherlands: Elsevier B.V |
| 摘要: | 摘要： The first measurement of jet shapes, defined as the fractional transverse momentum radial distribution, for inclusive jets produced in heavy-ion collisions is presented. Data samples of PbPb and pp collisions, corresponding to integrated luminosities of 150 μb−1 and 5.3 pb−1 respectively, were collected at a nucleon–nucleon centre-of-mass energy of sNN=2.76 TeV with the CMS detector at the LHC. The jets are reconstructed with the anti-kT algorithm with a distance parameter R=0.3, and the jet shapes are measured for charged particles with transverse momentum pT>1 GeV/c. The jet shapes measured in PbPb collisions in different collision centralities are compared to reference distributions based on the pp data. A centrality-dependent modification of the jet shapes is observed in the more central PbPb collisions, indicating a redistribution of the energy inside the jet cone. This measurement provides information about the parton shower mechanism in the hot and dense medium produced in heavy-ion collisions.
出版者： Netherlands: Elsevier B.V
出版日期： 2014-03-07
出處： Physics letters. B, 2014-03, Vol.730 (C), p.243-263
資源來源： ScienceDirect Journals
版權： 2014 The Authors
識別號： ISSN: 0370-2693
識別號： EISSN: 1873-2445
識別號： DOI: 10.1016/j.physletb.2014.01.042 |
| 顯示於類別: | [物理學系] 期刊論文
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