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Transverse-momentum pt correlations on (η, φ) from mean-pt fluctuations in Au–Au collisions at GeV
Authors :
Collaboration, STAR Adams, J Aggarwal, M M Ahammed, Z Amonett, J Anderson, B D Arkhipkin, D Averichev, G S Badyal, S K Bai, Y Balewski, J Barannikova, O Barnby, L S Baudot, J Bekele, S Belaga, V V Bellingeri, A Bellwied, R Berger, J Bezverkhny, B I Bharadwaj, S Bhasin, A Bhati, A K Bhatia, V S Bichsel, H Bielcik, J Bielcikova, J Billmeier, A Bland, L C Blyth, C O Blyth, L Bonner, B E Botje, M Boucham, A Bouchet, J Brandin, A V Bravar, A Bystersky, M Cadman, R V Cai, X Z Caines, H Caldern, M Barca, de la Castillo, J Catu, O Cebra, D Chajecki, Z Chaloupka, P Chattopadhyay, S Chen, H F Chen, J H Chen, Y Cheng, J Cherney, M Chikanian, A Choi, H A Christie, W Coffin, J P Cormier, T M Cosentino, M R Cramer, J G Crawford, H J Das, D Das, S Daugherity, M de, M M Dedovich, T G DePhillips, M Derevschikov, A A Didenko, L Dietel, T Dogra, S M Dong, W J Dong, X Draper, J E Du, F Dubey, A K Dunin, V B Dunlop, J C Dutta, M R Eckardt, V Edwards, W R Efimov, L G Emelianov, V Engelage, J Eppley, G Erazmus, B Estienne, M Fachini, P Faivre, J Fatemi, R Fedorisin, J Filimonov, K Filip, P Finch, E Fine, V Fisyak, Y Fornazier, K S F Fu, J Gagliardi, C A Gaillard, L Gans, J Ganti, M S Geurts, F Ghazikhanian, V Ghosh, P Gonzalez, J E Gos, H Grachov, O Grebenyuk, O Grosnick, D Guertin, S M Guo, Y Gupta, A Gupta, N Gutierrez, T D Hallman, T J Hamed, A Hardtke, D Harris, J W Heinz, M Henry, T W Hepplemann, S Hippolyte, B Hirsch, A Hjort, E Hoffmann, G W Horner, M J Huang, H Z Huang, S L Hughes, E W Humanic, T J Igo, G Ishihara, A Jacobs, P Jacobs, W W Jedynak, M Jiang, H Jones, P G Judd, E G Kabana, S Kang, K Kaplan, M Keane, D Kechechyan, A Khodyrev, V Yu Kim, B C Kiryluk, J Kisiel, A Kislov, E M Klay, J Klein, S R Koetke, D D Kollegger, T Kopytine, M Kotchenda, L Kowalik, K L Kramer, M Kravtsov, P Kravtsov, V I Krueger, K Kuhn, C Kulikov, A I Kumar, A Kutuev, R Kh Kuznetsov, A A Lamont, M A C Landgraf, J M Lange, S Laue, F Lauret, J Lebedev, A Lednicky, R Lee, H Lehocka, S LeVine, M J Li, C Li, Q Li, Y Lin, G Lindenbaum, S J Lisa, M A Liu, F Liu, H Liu, J Liu, L Liu, Q J Liu, Z Ljubicic, T Llope, W J Long, H Longacre, R S Lopez, M Love, W A Lu, Y Ludlam, T Lynn, D Ma, G L Ma, J G Ma, Y G Magestro, D Mahajan, S Mahapatra, D P Majka, R Mangotra, L K Manweiler, R Margetis, S Markert, C Martin, L Marx, J N Matis, H S Matulenko, Yu A McClain, C J McShane, T S Meissner, F Melnick, Yu Meschanin, A Miller, M L Minaev, N G Mironov, C Mischke, A Mishra, D K Mitchell, J Mohanty, B Molnar, L Moore, C F Morozov, D A Munhoz, M G Nandi, B K Nayak, S K Nayak, T K Nelson, J M Netrakanti, P K Nikitin, V A Nogach, L V Nurushev, S B Odyniec, G Ogawa, A Okorokov, V Oldenburg, M Olson, D Pal, S K Panebratsev, Y Panitkin, S Y Pavlinov, A I Pawlak, T Peitzmann, T Perevoztchikov, V Perkins, C Peryt, W Petrov, V A Phatak, S C Picha, R Planinic, M Pluta, J Porile, N Porter, J Poskanzer, A M Potekhin, M Potrebenikova, E S, B V K Prindle, D Pruneau, C Putschke, J Rakness, G Raniwala, R Raniwala, S Ravel, O Ray, R L Razin, S V Reichhold, D Reid, J G Reinnarth, J Renault, G Retiere, F Ridiger, A Ritter, H G Roberts, J B Rogachevskiy, O V Romero, J L Rose, A Roy, C Ruan, L Russcher, M J Sahoo, R Sakrejda, I Salur, S Sandweiss, J Sarsour, M Savin, I Sazhin, P S Schambach, J Scharenberg, R P Schmitz, N Schweda, K Seger, J Selyuzhenkov, I Seyboth, P Shahaliev, E Shao, M Shao, W Sharma, M Shen, W Q Shestermanov, K E Shimanskiy, S S Sichtermann, E Simon, F Singaraju, R N Smirnov, N Snellings, R Sood, G Sorensen, P Sowinski, J Speltz, J Spinka, H M Srivastava, B Stadnik, A Stanislaus, T D S Stock, R Stolpovsky, A Strikhanov, M Stringfellow, B Suaide, A A P Sugarbaker, E Sumbera, M Surrow, B Swanger, M Symons, T J M Szanto, A Toledo, de Tai, A Takahashi, J Tang, A H Tarnowsky, T Thein, D Thomas, J H Timmins, A R Timoshenko, S Tokarev, M Trainor, T A Trentalange, S Tribble, R E Tsai, O D Ulery, J Ullrich, T Underwood, D G Van, G van, N Kolk, der van, M Vander, A M Varma, R Vasilevski, I M Vasiliev, A N Vernet, R Vigdor, S E Viyogi, Y P Vokal, S Voloshin, S A Waggoner, W T Wang, F Wang, G Wang, G Wang, X L Wang, Y Wang, Y Wang, Z M Ward, H Watson, J W Webb, J C Westfall, G D Wetzler, A Whitten, C Wieman, H Wissink, S W Witt, R Wood, J Wu, J Xu, N Xu, Z Xu, Z Z Yamamoto, E Yepes, P Yoo, K Yurevich, V I Zborovsky, I Zhang, H Zhang, W M Zhang, Y Zhang, Z P Zhong, C Zoulkarneev, R Zoulkarneeva, Y Zubarev, A N Zuo, J X
Source :
Journal of Physics G: Nuclear and Particle Physics; June 2006, Vol. 32 Issue: 6 p37-48, 12p
Publication Year :
2006
Abstract
We present first measurements of the pseudorapidity and azimuth (η, φ) bin-size dependence of event-wise mean transverse-momentum 〈pt〉 fluctuations for Au–Au collisions at GeV. We invert that dependence to obtain pt autocorrelations on differences (ηΔ, φΔ) interpreted to represent velocity/temperature distributions on (η, φ). The general form of the autocorrelations suggests that the basic correlation mechanism is parton fragmentation. The autocorrelations vary rapidly with collision centrality, which suggests that fragmentation is strongly modified by a dissipative medium in the more central Au–Au collisions relative to peripheral or p–p collisions.
Details
Language :
English
ISSN :
09543899 and 13616471
Volume :
32
Issue :
6
Database :
Supplemental Index
Journal :
Journal of Physics G: Nuclear and Particle Physics
Publication Type :
Periodical
Accession number :
ejs9077455