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

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 09期

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.

引用

页数：11

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