Particle-Yield Modification in Jetlike Azimuthal Dihadron Correlations in Pb-Pb Collisions at √SNN=2.76 TeV

被引:107
作者
Aamodt, K. [1 ]
Abelev, B. [2 ]
Abrahantes Quintana, A. [3 ]
Adamova, D. [4 ]
Adare, A. M. [5 ]
Aggarwal, M. M. [6 ]
Rinella, G. Aglieri [7 ]
Agocs, A. G. [8 ]
Agostinelli, A. [9 ,10 ]
Aguilar Salazar, S. [11 ]
Ahammed, Z. [12 ]
Ahmad, N. [13 ]
Masoodi, A. Ahmad [13 ]
Ahn, S. U. [14 ,42 ]
Akindinov, A. [15 ]
Aleksandrov, D. [16 ]
Alessandro, B. [17 ]
Alfaro Molina, R. [11 ]
Alici, A. [10 ,18 ,19 ]
Alkin, A. [20 ]
Almaraz Avina, E. [11 ]
Alme, J. [21 ]
Alt, T. [22 ]
Altini, V. [23 ,24 ]
Altinpinar, S. [1 ]
Altsybeev, I. [25 ]
Andrei, C. [26 ]
Andronic, A. [27 ,28 ]
Anguelov, V. [22 ]
Anielski, J. [29 ]
Anticic, T. [30 ]
Antinori, F. [31 ]
Antonioli, P. [10 ]
Aphecetche, L. [32 ]
Appelshaeuser, H. [33 ]
Arbor, N. [34 ]
Arcelli, S. [9 ,10 ]
Arend, A. [33 ]
Armesto, N. [35 ,36 ]
Arnaldi, R. [17 ]
Aronsson, T. [5 ]
Arsene, I. C. [27 ,28 ]
Arslandok, M. [33 ]
Asryan, A. [25 ]
Augustinus, A. [7 ]
Averbeck, R. [27 ,28 ]
Awes, T. C. [37 ]
Aysto, J. [38 ,39 ]
Azmi, M. D. [13 ]
Bach, M. [22 ]
机构
[1] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[2] Lawrence Livermore Natl Lab, Livermore, CA USA
[3] Ctr Aplicac Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba
[4] Acad Sci Czech Republ, Inst Nucl Phys, CZ-25068 Rez, Czech Republic
[5] Yale Univ, New Haven, CT USA
[6] Panjab Univ, Dept Phys, Chandigarh 160014, India
[7] European Org Nucl Res CERN, Geneva, Switzerland
[8] Hungarian Acad Sci, KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary
[9] Univ Bologna, Dipartmento Fis, Bologna, Italy
[10] Sezione Ist Nazl Fis Nucl, Bologna, Italy
[11] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico
[12] Ctr Variable Energy Cyclotron, Kolkata, India
[13] Aligarh Muslim Univ, Dept Phys, Aligarh 202002, Uttar Pradesh, India
[14] Gangneung Wonju Natl Univ, Kangnung, South Korea
[15] Inst Theoret & Expt Phys, Moscow 117259, Russia
[16] Russian Res Ctr Kurchatov Inst, Moscow, Russia
[17] Sezione Ist Nazl Fis Nucl, Turin, Italy
[18] Museo Storico Fis Enrico Fermi, Rome, Italy
[19] Ctr Studi & Ric, Ctr Fermi, Rome, Italy
[20] Bogolyubov Inst Theoret Phys, Kiev, Ukraine
[21] Bergen Univ Coll, Fac Engn, Bergen, Norway
[22] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, Frankfurt, Germany
[23] Dipartimento Interateneo Fis M Merlin, Bari, Italy
[24] Sezione Ist Nazl Fis Nucl, Bari, Italy
[25] St Petersburg State Univ, V Fock Inst Phys, St Petersburg, Russia
[26] Natl Inst Phys & Nucl Engn, Bucharest, Romania
[27] GSI Helmholtzzentrum Schwerionenforsch, ExtreMe Matter Inst EMMI, Darmstadt, Germany
[28] GSI Helmholtzzentrum Schwerionenforsch, Div Res, Darmstadt, Germany
[29] Univ Munster, Inst Kernphys, D-4400 Munster, Germany
[30] Rudjer Boskovic Inst, Zagreb, Croatia
[31] Sezione Ist Nazl Fis Nucl, Padua, Italy
[32] Univ Nantes, CNRS, IN2P3, SUBATECH,Ecole Mines Nantes, Nantes, France
[33] Goethe Univ Frankfurt, Inst Kernphys, D-6000 Frankfurt, Germany
[34] Univ Grenoble 1, CNRS, Inst Polytech Grenoble, LPSC,IN2P3, Grenoble, France
[35] Univ Santiago Compostela, IGFAE, Santiago De Compostela, Spain
[36] Univ Santiago Compostela, Dept Fis Particulas, Santiago De Compostela, Spain
[37] Oak Ridge Natl Lab, Oak Ridge, TN USA
[38] Univ Jyvaskyla, Jyvaskyla, Finland
[39] HIP, Jyvaskyla, Finland
[40] Sezione Ist Nazl Fis Nucl, Catania, Italy
[41] IRFU, Commissariat Energie Atom, Saclay, France
[42] Univ Blaise Pascal, Clermont Univ, CNRS, LPC,IN2P3, Clermont Ferrand, France
[43] Slovak Acad Sci, Inst Expt Phys, Kosice 04353, Slovakia
[44] Inst Phys, Bhubaneswar 751007, Orissa, India
[45] Univ Catania, Dipartimento Fis & Astron, Catania, Italy
[46] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England
[47] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland
[48] JINR, Dubna, Russia
[49] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark
[50] Univ Strasbourg, CNRS, IN2P3, IPHC, Strasbourg, France
基金
巴西圣保罗研究基金会; 美国国家科学基金会; 英国科学技术设施理事会; 新加坡国家研究基金会; 芬兰科学院; 中国国家自然科学基金; 美国能源部; 欧洲研究理事会;
关键词
QUARK-GLUON PLASMA; PERSPECTIVE;
D O I
10.1103/PhysRevLett.108.092301
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The yield of charged particles associated with high-pt trigger particles (8 < p(t) < 15 GeV/c) is measured with the ALICE detector in Pb-Pb collisions at root S-NN = 2.76 TeV relative to proton-proton collisions at the same energy. The conditional per-trigger yields are extracted from the narrow jetlike correlation peaks in azimuthal dihadron correlations. In the 5% most central collisions, we observe that the yield of associated charged particles with transverse momenta p(t) > 3 GeV/c on the away side drops to about 60% of that observed in pp collisions, while on the near side a moderate enhancement of 20%-30% is found.
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页数:11
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