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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/38969

    Title: Recent results from PHOBOS on particle production at high p(T)
    Authors: Alver,B;Back,BB;Baker,MD;Ballintijn,M;Barton,DS;Betts,RR;Bickley,AA;Bindel,R;Busza,W;Carroll,A;Chai,Z;Chetluru,V;Decowski,MP;Garcia,E;Gburek,T;George,N;Gulbrandsen,K;Halliwell,C;Hamblen,J;Harnarine,I;Hauer,M;Henderson,C;Hofman,DJ;Hollis,RS;Holynski,R;Holzman,B;Iordanova,A;Johnson,E;Kane,JL;Khan,N;Kulinich,P;Kuo,CM;Li,W;Lin,WT;Loizides,C;Manly,S;Mignerey,AC;Nouicer,R;Olszewski,A;Pak,R;Reed,C;Richardson,E;Roland,C;Roland,G;Sagerer,J;Seals,H;Sedykh,I;Smith,CE;Stankiewicz,MA;Steinberg,P;Stephans,GSF;Sukhanov,A;Szostak,A;Tonjes,MB;Trzupek,A;Vale,C;van Nieuwenhuizen,GJ;Vaurynovich,SS;Verdier,R;Veres,GI;Walters,P;Wenger,E;Willhelm,D;Wolfs,FLH;Wosiek,B;Wozniak,K;Wyngaardt,S;Wyslouch,B
    Contributors: 物理研究所
    Date: 2009
    Issue Date: 2010-07-08 14:00:44 (UTC+8)
    Publisher: 中央大學
    Abstract: A selection of experimental results from the PHOBOS Collaboration relevant for probing high-energy nuclear collisions with high transverse momentum particles is presented. The inclusive yields of charged particles and comparisons between nuclear and elementary collisions already reveal a large amount of parton energy loss in the hot and dense medium created in heavy ion collisions. Remarkable scaling and factorization features are observed, unifying the data taken at various collision energies, centralities and nuclear sizes. To further analyze the nature of the energy loss, a measurement of pseudorapidity (Delta eta) and azimuthal angle (Delta phi) correlations between high transverse momentum charged hadrons (p(T) > 2.5 GeV/c) and all associated charged particles is presented at both short-range (small Delta eta) and long-range (large Delta eta) over a continuous detector acceptance covering-4 < Delta eta < 2. Various near-and away-side features of the correlation structure are discussed as a function of centrality in Au+Au collisions at root s(NN) = 200 GeV. The results provide new information about the longitudinal (Delta eta) extent of the near-side 'ridge' structure, first observed by the STAR Collaboration over a narrower eta range. In central Au+Au collisions the ridge structure extends to at least Delta eta = 4, and its strength completely diminishes as collisions become more peripheral.
    Appears in Collections:[物理研究所] 期刊論文

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