Measurement of charged jet suppression in Pb-Pb collisions at √sNN=2.76 TeV

被引：0

作者：

Abelev, B. ^{[83
]}

Adam, J. ^{[47
]}

Adamova, D. ^{[91
]}

Aggarwal, M. M. ^{[95
]}

Rinela, G. Aglieri ^{[43
]}

Agnelli, M. ^{[101
,119
]}

Agocs, A. G. ^{[142
]}

Agostinelli, A.

Agrawal, N. ^{[54
]}

Ahammed, Z. ^{[138
]}

Altmad, N. ^{[27
]}

Masoodi, A. Ahmad ^{[27
]}

Ahmed, I. ^{[23
]}

Ahn, S. U. ^{[76
]}

Ahn, S. A. ^{[76
]}

Aimo, I. ^{[101
,119
]}

Aiola, S. ^{[143
]}

Ajaz, M. ^{[23
]}

Akindinov, A. ^{[66
]}

Aleksandrov, D. ^{[108
]}

Alessandro, B. ^{[119
]}

Alexandre, D. ^{[110
]}

Alici, A. ^{[20
,113
]}

Alkin, A. ^{[10
]}

Alme, J. ^{[45
]}

Alt, T. ^{[49
]}

Altini, V. ^{[39
,40
]}

Altinpinar, S. ^{[26
]}

Altsybeev, I. ^{[137
]}

Prado, C. Alves Garcia ^{[127
]}

Andrei, C. ^{[86
]}

Andronic, A. ^{[104
,105
]}

Anguelov, V. ^{[100
]}

Anielski, J. ^{[61
]}

Anticic, T. ^{[106
]}

Antinori, F. ^{[116
]}

Antonioli, P. ^{[113
]}

Aphecetche, L. ^{[120
]}

Appelshaeuser, H. ^{[59
]}

Arborn, N. ^{[79
]}

Arcelli, S.

Armesto, N. ^{[24
,25
]}

Arnaldi, R. ^{[119
]}

Aronsson, T. ^{[143
]}

Arsene, I. C. ^{[30
,104
,105
]}

Arslandok, M. ^{[59
]}

Augustinus, A. ^{[43
]}

Averbeck, R. ^{[104
,105
]}

Awes, T. C. ^{[92
]}

Azmi, M. D. ^{[27
,97
]}

机构：

[1] St Petersburg State Polytechn Univ, St Petersburg, Russia

[2] Aligarh Muslim Univ, Dept Appl Phys, Aligarh, Uttar Pradesh, India

[3] Moscow MV Lomonosov State Univ, DV Skobeltsyn Inst Nucl Phys, Moscow, Russia

[4] Univ Belgrade, Fac Phys, YU-11001 Belgrade, Serbia

[5] Univ Belgrade, Vinca Inst Nucl Sci, Belgrade, Serbia

[6] Univ Wroclaw, Inst Theoret Phys, PL-50138 Wroclaw, Poland

[7] Univ Kansas, Lawrence, KS 66045 USA

[8] AI Alikhanyan Natl Sci Lab, Yerevan Phys Inst, Yerevan, Armenia

[9] Benemer Univ Autonoma Puebla, Puebla, Mexico

[10] Bogolyubov Inst Theoret Phys, Kiev, Ukraine

[11] Bose Inst, Dept Phys, Kolkata, India

[12] Bose Inst, CAPSS, Kolkata, India

[13] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[14] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA

[15] Cent China Normal Univ, Wuhan, Peoples R China

[16] Ctr Calcul IN2P3, Villeurbanne, France

[17] Ctr Aplicac Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba

[18] CIEMAT, E-28040 Madrid, Spain

[19] CINVESTAV, Mexico City 14000, DF, Mexico

[20] Museo Stor Fis Ctr Studi & Ric Enrico Fermi, Ctr Fermi, Rome, Italy

[21] Chicago State Univ, Chicago, IL USA

[22] IRFU, Commissariat Energie Atom, Saclay, France

[23] COMSATS Inst Informat Technol CIIT, Islamabad, Pakistan

[24] Univ Santiago de Compostela, Dept Fis Particulas, Santiago De Compostela, Spain

[25] Univ Santiago de Compostela, IGFAE, Santiago De Compostela, Spain

[26] Univ Bergen, Dept Phys & Technol, Bergen, Norway

[27] Aligarh Muslim Univ, Dept Phys, Aligarh 202002, Uttar Pradesh, India

[28] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[29] Sejong Univ, Dept Phys, Seoul, South Korea

[30] Univ Oslo, Dept Phys, Oslo, Norway

[31] Univ Roma La Sapienza, Dipartimento Fis, Rome, Italy

[32] Ist Nazl Fis Nucl, Dept Fis, Cagliari, Italy

[33] Ist Nazl Fis Nucl, Dept Fis, Trieste, Italy

[34] Ist Nazl Fis Nucl, Dept Fis, Turin, Italy

[35] Ist Nazl Fis Nucl, Dipartimento Fis & Astron, I-40126 Bologna, Italy

[36] Ist Nazl Fis Nucl, Dipartimento Fis & Astron, Padua, Italy

[37] ER Caianiello Univ, Grp Coll INFN, Dipartimento Fis, Salerno, Italy

[38] Univ Piemonte Orientalc, Dipartimento Sci & Innovaz Tecnol, Grp Coll INFN, Alessandrria, Italy

[39] Dipartimento Interatenco Fis M Merlin, Bari, Italy

[40] Sezione Ist Nazl Fis Nucl, Bari, Italy

[41] Lund Univ, Div Expt High Energy Phys, Lund, Sweden

[42] Eberhard Karls Univ Tubingen, Tubingen, Germany

[43] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland

[44] Tech Univ Munich, Excellence Cluster Univ, D-80290 Munich, Germany

[45] Bergen Univ Coll, Fac Engn, Bergen, Norway

[46] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia

[47] Czech Tech Univ, Fac Nucl Sci & Phys Engn, CR-11519 Prague, Czech Republic

[48] Safarik Univ, Fac Sci, Kosice, Slovakia

[49] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, D-60054 Frankfurt, Germany

[50] Gangneung Wonju Natl Univ, Kangnung, South Korea

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2014年 / 03期

基金：

美国国家科学基金会;

关键词：

Jets; Heavy Ions; LARGE TRANSVERSE-MOMENTUM; PLUS AU COLLISIONS; AU+AU COLLISIONS; DEPENDENCE; HADRONS;

D O I：

10.1007/JHEP03(2014)013

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

A measurement of the transverse momentum spectra of jets in Pb-Pb collisions at root s(NN) = 2.76 TeV is reported. Jets are reconstructed from charged particles using the anti-k(T) jet algorithm with jet resolution parameters R of 0.2 and 0.3 in pseudorapidity vertical bar eta vertical bar < 0.5. The transverse momentum p(T) of charged particles is measured down to 0.15 GeV/c which gives access to the low p(T) fragments of the jet. Jets found in heavy-ion collisions are corrected event-by-event for average background density and on an inclusive basis (via unfolding) for residual background fluctuations and detector effects. A strong suppression of jet production in central events with respect to peripheral events is observed. The suppression is found to be similar to the suppression of charged hadrons, which suggests that substantial energy is radiated at angles larger than the jet resolution parameter R = 0.3 considered in the analysis. The fragmentation bias introduced by selecting jets with a high p(T) leading particle, which rejects jets with a soft fragmentation pattern, has a similar effect on the jet yield for central and peripheral events. The ratio of jet spectra with R = 0.2 and R = 0.3 is found to be similar in Pb-Pb and simulated PYTHIA pp events, indicating no strong broadening of the radial jet structure in the reconstructed jets with R < 0.3.

引用

页数：39

共 66 条

[11] Evidence from d+Au measurements for final-state suppression of high-pT hadrons in Au plus Au collisions at RHIC -: art. no. 073204 [J].

Adams, J ;

Adler, C ;

Aggarwal, MM ;

Ahammed, Z ;

Amonett, J ;

Anderson, BD ;

Anderson, M ;

Arkhipkin, D ;

Averichev, GS ;

Badyal, SK ;

Balewski, J ;

Barannikova, O ;

Barnby, LS ;

Baudot, J ;

Bekele, S ;

Belaga, VV ;

Bellwied, R ;

Berger, J ;

Bezverkhny, BI ;

Bhardwaj, S ;

Bhaskar, P ;

Bhati, AK ;

Bichsel, H ;

Billmeier, A ;

Bland, LC ;

Blyth, CO ;

Bonner, BE ;

Botje, M ;

Boucham, A ;

Brandin, A ;

Bravar, A ;

Cadman, RV ;

Cai, XZ ;

Caines, H ;

Sánchez, MCD ;

Carroll, J ;

Castillo, J ;

Castro, M ;

Cebra, D ;

Chaloupka, P ;

Chattopadhyay, S ;

Chen, HF ;

Chen, Y ;

Chernenko, SP ;

Cherney, M ;

Chikanian, A ;

Choi, B ;

Christie, W ;

Coffin, JP ;

Cormier, TM .

PHYSICAL REVIEW LETTERS, 2003, 91 (07)

[12]

Adcox K, 2002, Phys Rev Lett, V88, P022301

[13] Suppressed π0 production at large transverse momentum in central Au plus Au collisions at √sNN=200 GeV -: art. no. 072301 [J].

Adler, SS ;

Afanasiev, S ;

Aidala, C ;

Ajitanand, NN ;

Akiba, Y ;

Alexander, J ;

Amirikas, R ;

Aphecetche, L ;

Aronson, SH ;

Averbeck, R ;

Awes, TC ;

Azmoun, R ;

Babintsev, V ;

Baldisseri, A ;

Barish, KN ;

Barnes, PD ;

Bassalleck, B ;

Bathe, S ;

Batsouli, S ;

Baublis, V ;

Bazilevsky, A ;

Belikov, S ;

Berdnikov, Y ;

Bhagavatula, S ;

Boissevain, JG ;

Borel, H ;

Borenstein, S ;

Brooks, ML ;

Brown, DS ;

Bruner, N ;

Bucher, D ;

Buesching, H ;

Bumazhnov, V ;

Bunce, G ;

Burward-Hoy, JM ;

Butsyk, S ;

Camard, X ;

Chai, JS ;

Chand, P ;

Chang, WC ;

Chernichenko, S ;

Chi, CY ;

Chiba, J ;

Chiu, M ;

Choi, IJ ;

Choi, J ;

Choudhury, RK ;

Chujo, T ;

Cianciolo, V ;

Cobigo, Y .

PHYSICAL REVIEW LETTERS, 2003, 91 (07) :723011-723016

[14]

Adye T., ARXIV11051160

[15]

ALICE collaboration, 2013, Phys. Rev. C, V88

[16]

ALICE Collaboration, 2012, JHEP, V03

[17] The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events [J].

Alme, J. ;

Andres, Y. ;

Appelshaeuser, H. ;

Bablok, S. ;

Bialas, N. ;

Bolgen, R. ;

Bonnes, U. ;

Bramm, R. ;

Braun-Munzinger, P. ;

Campagnolo, R. ;

Christiansen, P. ;

Dobrin, A. ;

Engster, C. ;

Fehlker, D. ;

Foka, Y. ;

Frankenfeld, U. ;

Gaardhoje, J. J. ;

Garabatos, C. ;

Glaessel, P. ;

Gutierrez, C. Gonzalez ;

Gros, P. ;

Gustafsson, H-A ;

Helstrup, H. ;

Hoch, M. ;

Ivanov, M. ;

Janik, R. ;

Junique, A. ;

Kalweit, A. ;

Keidel, R. ;

Kniege, S. ;

Kowalski, M. ;

Larsen, D. T. ;

Lesenechal, Y. ;

Lenoir, P. ;

Lindegaard, N. ;

Lippmann, C. ;

Mager, M. ;

Mast, M. ;

Matyja, A. ;

Munkejord, M. ;

Musa, L. ;

Nielsen, B. S. ;

Nikolic, V. ;

Oeschler, H. ;

Olsen, E. K. ;

Oskarsson, A. ;

Osterman, L. ;

Pikna, M. ;

Rehman, A. ;

Renault, G. .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2010, 622 (01) :316-367

[18]

[Anonymous], 1995, Nuclear Physics B, VB441, P3

[19] An analysis of the influence of background subtraction and quenching on jet observables in heavy-ion collisions [J].

Apolinario, Liliana ;

Armesto, Nestor ;

Cunqueiro, Leticia .

JOURNAL OF HIGH ENERGY PHYSICS, 2013, (02)

[20] Q-PYTHIA: a medium-modified implementation of final state radiation [J].

Armesto, Nestor ;

Cunqueiro, Leticia ;

Salgado, Carlos A. .

EUROPEAN PHYSICAL JOURNAL C, 2009, 63 (04) :679-690

← 1 2 3 4 5 6 7 →