Measurement of the pseudorapidity and centrality dependence of the transverse energy density in pb-pb collisions at √s NN=2.76TeV

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/105309

Title:	Measurement of the pseudorapidity and centrality dependence of the transverse energy density in pb-pb collisions at √s NN=2.76TeV
Authors:	余欣珊;Chatrchyan, S;Khachatryan, V;Sirunyan, A M;Tumasyan, A;Adam, W;Bergauer, T;Dragicevic, M;Erö, J;Fabjan, C;Friedl, M;Frühwirth, R;Ghete, V M;Hammer, J;Hörmann, N;Hrubec, J;Jeitler, M;Kiesenhofer, W;Knünz, V;Krammer, M;Liko, D;Mikulec, I;Pernicka, M;Rahbaran, B;Rohringer, C;Rohringer, H;Schöfbeck, R;Strauss, J;Taurok, A;Wagner, P;Waltenberger, W;Walzel, G;Widl, E;Wulz, C-E;Mossolov, V;Shumeiko, N;Suarez Gonzalez, J;Bansal, S;Cornelis, T;De Wolf, E A;Janssen, X;Luyckx, S;Maes, T;Mucibello, L;Ochesanu, S;Roland, B;Rougny, R;Selvaggi, M;Staykova, Z;Van Haevermaet, H;Van Mechelen, P;Van Remortel, N;Van Spilbeeck, A;Blekman, F;Blyweert, S;D'Hondt, J;Gonzalez Suarez, R;Kalogeropoulos, A;Maes, M;Olbrechts, A;Van Doninck, W;Van Mulders, P;Van Onsem, G P;Villella, I;Clerbaux, B;De Lentdecker, G;Dero, V;Gay, A P R;Hreus, T;Léonard, A;Marage, P E;Reis, T;Thomas, L;Vander Velde, C;Vanlaer, P;Wang, J;Adler, V;Beernaert, K;Cimmino, A;Costantini, S;Garcia, G;Grunewald, M;Klein, B;Lellouch, J;Marinov, A;Mccartin, J;Ocampo Rios, A A;Ryckbosch, D;Strobbe, N;Thyssen, F;Tytgat, M;Verwilligen, P;Walsh, S;Yazgan, E;Zaganidis, N;Basegmez, S;Bruno, G;Castello, R;Ceard, L;Delaere, C;du Pree, T
Contributors:	理學院物理學系
Date:	2012-10-08
Issue Date:	2026-04-23 12:15:52 (UTC+8)
Publisher:	United States
Abstract:	摘要： The transverse energy (E(T)) in Pb-Pb collisions at 2.76 TeV nucleon-nucleon center-of-mass energy (√(s(NN)) has been measured over a broad range of pseudorapidity (η) and collision centrality by using the CMS detector at the LHC. The transverse energy density per unit pseudorapidity (dE(T)/dη) increases faster with collision energy than the charged particle multiplicity. This implies that the mean energy per particle is increasing with collision energy. At all pseudorapidities, the transverse energy per participating nucleon increases with the centrality of the collision. The ratio of transverse energy per unit pseudorapidity in peripheral to central collisions varies significantly as the pseudorapidity increases from η=0 to \|η\|=5.0. For the 5% most central collisions, the energy density per unit volume is estimated to be about 14 GeV/fm(3) at a time of 1 fm/c after the collision. This is about 100 times larger than normal nuclear matter density and a factor of 2.6 times higher than the energy density reported at √(s(NN))=200 GeV at the Relativistic Heavy Ion Collider. 其他題名： Phys Rev Lett 出版者： United States 出版日期： 2012-10-12 出處： Physical review letters, 2012-10, Vol.109 (15), p.152303 資源來源： American Physical Society Journals 識別號： ISSN: 1079-7114 識別號： EISSN: 1079-7114 識別號： DOI: 10.1103/PhysRevLett.109.152303 識別號： PMID: 23102301
Appears in Collections:	[Department of Physics] journal & Dissertation

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