/ Experiment-Nucl arXiv:1002.1077


Trends in Yield and Azimuthal Shape Modification in Dihadron Correlations in Relativistic Heavy Ion Collisions


Adare, A. (Colorado U.) ; Afanasiev, S. (Dubna, JINR) ; Aidala, C. (Massachusetts U., Amherst) ; Ajitanand, N.N. (SUNY, Stony Brook) ; Akiba, Y. (Brookhaven) ; Al-Bataineh, H. (New Mexico State U.) ; Alexander, J. (SUNY, Stony Brook) ; Aoki, K. (Nishina Ctr., RIKEN) ; Aphecetche, L. (Nantes U., LSN) ; Aramaki, Y. (Tokyo U., CNS) ; Asai, J. (Nishina Ctr., RIKEN) ; Atomssa, E.T. (Ecole Polytechnique) ; Averbeck, R. (SUNY, Stony Brook) ; Awes, T.C. (Oak Ridge) ; Azmoun, B. (Brookhaven) ; Babintsev, V. (Serpukhov, IHEP) ; Bai, M. (Brookhaven) ; Baksay, G. (Florida Inst. Tech.) ; Baksay, L. (Florida Inst. Tech.) ; Baldisseri, A. (DAPNIA, Saclay) ; Barish, K.N. (UC, Riverside) ; Barnes, P.D. (Los Alamos) ; Bassalleck, B. (New Mexico U.) ; Basye, A.T. (Abilene Christian U.) ; Bathe, S. (UC, Riverside) ; Batsouli, S. (Oak Ridge) ; Baublis, V. (St. Petersburg, INP) ; Baumann, C. (Munster U.) ; Bazilevsky, A. (Brookhaven) ; Belikov, S. (Brookhaven) ; Belmont, R. (Vanderbilt U.) ; Bennett, R. (SUNY, Stony Brook) ; Berdnikov, A. (St. Petersburg Polytechnic Inst.) ; Berdnikov, Y. (St. Petersburg Polytechnic Inst.) ; Bickley, A.A. (Colorado U.) ; Boissevain, J.G. (Los Alamos) ; Bok, J.S. (Yonsei U.) ; Borel, H. (DAPNIA, Saclay) ; Boyle, K. (SUNY, Stony Brook) ; Brooks, M.L. (Los Alamos) ; Buesching, H. (Brookhaven) ; Bumazhnov, V. (Serpukhov, IHEP) ; Bunce, G. (Brookhaven) ; Butsyk, S. (Los Alamos) ; Camacho, C.M. (Los Alamos) ; Campbell, S. (SUNY, Stony Brook) ; Chang, B.S. (Yonsei U.) ; Chang, W.C. (Taiwan, Inst. Phys.) ; Charvet, J.-L. (DAPNIA, Saclay) ; Chen, C.-H. (SUNY, Stony Brook) ; Chernichenko, S. (Serpukhov, IHEP) ; Chi, C.Y. (Nevis Labs, Columbia U.) ; Chiu, M. (Illinois U., Urbana) ; Choi, I.J. (Yonsei U.) ; Choudhury, R.K. (Bhabha Atomic Res. Ctr.) ; Christiansen, P. (Lund U.) ; Chujo, T. (Tsukuba U.) ; Chung, P. (SUNY, Stony Brook) ; Churyn, A. (Serpukhov, IHEP) ; Chvala, O. (UC, Riverside) ; Cianciolo, V. (Oak Ridge) ; Citron, Z. (SUNY, Stony Brook) ; Cole, B.A. (Nevis Labs, Columbia U.) ; Connors, M. (SUNY, Stony Brook) ; Constantin, P. (Los Alamos) ; Csanad, M. (Eotvos U.) ; Csorgo, T. (Budapest, RMKI) ; Dahms, T. (SUNY, Stony Brook) ; Dairaku, S. (Nishina Ctr., RIKEN) ; Danchev, I. (Vanderbilt U.) ; Das, K. (Florida State U.) ; Datta, A. (Massachusetts U., Amherst) ; David, G. (Brookhaven) ; Denisov, A. (Serpukhov, IHEP) ; d'Enterria, D. (Ecole Polytechnique) ; Deshpande, A. (SUNY, Stony Brook) ; Desmond, E.J. (Brookhaven) ; Dietzsch, O. (Sao Paulo U.) ; Dion, A. (SUNY, Stony Brook) ; Donadelli, M. (Sao Paulo U.) ; Drapier, O. (Ecole Polytechnique) ; Drees, A. (SUNY, Stony Brook) ; Drees, K.A. (Brookhaven) ; Dubey, A.K. (Weizmann Inst.) ; Durham, J.M. (SUNY, Stony Brook) ; Durum, A. (Serpukhov, IHEP) ; Dutta, D. (Bhabha Atomic Res. Ctr.) ; Dzhordzhadze, V. (UC, Riverside) ; Edwards, S. (Florida State U.) ; Efremenko, Y.V. (Oak Ridge) ; Ellinghaus, F. (Colorado U.) ; Engelmore, T. (Nevis Labs, Columbia U.) ; Enokizono, A. (LLNL, Livermore) ; En'yo, H. (Brookhaven) ; Esumi, S. (Tsukuba U.) ; Eyser, K.O. (UC, Riverside) ; Fadem, B. (Muhlenberg Coll.) ; Fields, D.E. (Brookhaven) ; Finger, M. (Charles U.) ; Finger, M. (Charles U.) ; Fleuret, F. (Ecole Polytechnique) ; Fokin, S.L. (Kurchatov Inst., Moscow) ; Fraenkel, Z. (Weizmann Inst.) ; Frantz, J.E. (SUNY, Stony Brook) ; Franz, A. (Brookhaven) ; Frawley, A.D. (Florida State U.) ; Fujiwara, K. (Nishina Ctr., RIKEN) ; Fukao, Y. (Nishina Ctr., RIKEN) ; Fusayasu, T. (Nagasaki Inst. Appl. Sci.) ; Garishvili, I. (Tennessee U.) ; Glenn, A. (Colorado U.) ; Gong, H. (SUNY, Stony Brook) ; Gonin, M. (Ecole Polytechnique) ; Gosset, J. (DAPNIA, Saclay) ; Goto, Y. (Brookhaven) ; Granier de Cassagnac, R. (Ecole Polytechnique) ; Grau, N. (Nevis Labs, Columbia U.) ; Greene, S.V. (Vanderbilt U.) ; Grosse Perdekamp, M. (Brookhaven) ; Gunji, T. (Tokyo U., CNS) ; Gustafsson, H.- [<LATIN CAPITAL LETTER A WITH RING ABOVE>] . (Lund U.) ; Hadj Henni, A. (Nantes U., LSN) ; Haggerty, J.S. (Brookhaven) ; Hahn, K.I. (Ewha Women's U., Seoul) ; Hamagaki, H. (Tokyo U., CNS) ; Hamblen, J. (Tennessee U.) ; Hanks, J. (Nevis Labs, Columbia U.) ; Han, R. (Peking U.) ; Hartouni, Edward P. (LLNL, Livermore) ; Haruna, K. (Hiroshima U.) ; Haslum, E. (Lund U.) ; Hayano, R. (Tokyo U., CNS) ; Heffner, M. (LLNL, Livermore) ; Hegyi, S. (Budapest, RMKI) ; Hemmick, T.K. (SUNY, Stony Brook) ; Hester, T. (UC, Riverside) ; He, X. (Georgia State U.) ; Hill, J.C. (Iowa State U.) ; Hohlmann, M. (Florida Inst. Tech.) ; Holzmann, W. (SUNY, Stony Brook) ; Homma, K. (Hiroshima U.) ; Hong, B. (Korea U.) ; Horaguchi, T. (Tokyo Inst. Tech.) ; Hornback, D. (Tennessee U.) ; Huang, S. (Vanderbilt U.) ; Ichihara, T. (Brookhaven) ; Ichimiya, R. (Nishina Ctr., RIKEN) ; Ide, J. (Muhlenberg Coll.) ; Iinuma, H. (Nishina Ctr., RIKEN) ; Ikeda, Y. (Tsukuba U.) ; Imai, K. (Nishina Ctr., RIKEN) ; Imrek, J. (Debrecen U.) ; Inaba, M. (Tsukuba U.) ; Isenhower, D. (Abilene Christian U.) ; Ishihara, M. (Nishina Ctr., RIKEN) ; Isobe, T. (Tokyo U., CNS) ; Issah, M. (Vanderbilt U.) ; Isupov, A. (Dubna, JINR) ; Ivanischev, D. (St. Petersburg, INP) ; Jacak, B.V. (SUNY, Stony Brook) ; Jia, J. (SUNY, Stony Brook) ; Jin, J. (Nevis Labs, Columbia U.) ; Johnson, B.M. (Brookhaven) ; Joo, K.S. (Myong Ji U.) ; Jouan, D. (Orsay, LAL) ; Jumper, D.S. (Abilene Christian U.) ; Kajihara, F. (Tokyo U., CNS) ; Kametani, S. (Nishina Ctr., RIKEN) ; Kamihara, N. (Brookhaven) ; Kamin, J. (SUNY, Stony Brook) ; Kang, J.H. (Yonsei U.) ; Kapustinsky, J. (Los Alamos) ; Kawall, D. (Brookhaven) ; Kawashima, M. (Nishina Ctr., RIKEN) ; Kazantsev, A.V. (Kurchatov Inst., Moscow) ; Kempel, T. (Iowa State U.) ; Khanzadeev, A. (St. Petersburg, INP) ; Kijima, K.M. (Hiroshima U.) ; Kikuchi, J. (Waseda U., Cosmic Ray Div.) ; Kim, B.I. (Korea U.) ; Kim, D.H. (Myong Ji U.) ; Kim, D.J. (Yonsei U.) ; Kim, E.J. (Gunsan Natl. U.) ; Kim, E. (Seoul Natl. U.) ; Kim, S.H. (Yonsei U.) ; Kim, Y.J. (Illinois U., Urbana) ; Kinney, E. (Colorado U.) ; Kiriluk, K. (Colorado U.) ; Kiss, A. (Eotvos U.) ; Kistenev, E. (Brookhaven) ; Klay, J. (LLNL, Livermore) ; Klein-Boesing, C. (Munster U.) ; Kochenda, L. (St. Petersburg, INP) ; Komkov, B. (St. Petersburg, INP) ; Konno, M. (Tsukuba U.) ; Koster, J. (Illinois U., Urbana) ; Kotchetkov, D. (New Mexico U.) ; Kozlov, A. (Weizmann Inst.) ; Kral, A. (Prague, Tech. U.) ; Kravitz, A. (Nevis Labs, Columbia U.) ; Kunde, G.J. (Los Alamos) ; Kurita, K. (Nishina Ctr., RIKEN) ; Kurosawa, M. (Nishina Ctr., RIKEN) ; Kweon, M.J. (Korea U.) ; Kwon, Y. (Yonsei U.) ; Kyle, G.S. (New Mexico State U.) ; Lacey, R. (SUNY, Stony Brook) ; Lai, Y.S. (Nevis Labs, Columbia U.) ; Lajoie, J.G. (Iowa State U.) ; Layton, D. (Illinois U., Urbana) ; Lebedev, A. (Iowa State U.) ; Lee, D.M. (Los Alamos) ; Lee, J. (Ewha Women's U., Seoul) ; Lee, K.B. (Korea U.) ; Lee, K. (Seoul Natl. U.) ; Lee, K.S. (Korea U.) ; Lee, T. (Seoul Natl. U.) ; Leitch, M.J. (Los Alamos) ; Leite, M.A.L. (Sao Paulo U.) ; Leitner, E. (Vanderbilt U.) ; Lenzi, B. (Sao Paulo U.) ; Liebing, P. (Brookhaven) ; Linden Levy, L.A. (Colorado U.) ; Liska, T. (Prague, Tech. U.) ; Litvinenko, A. (Dubna, JINR) ; Liu, H. (New Mexico State U.) ; Liu, M.X. (Los Alamos) ; Li, X. (Beijing, Inst. Atomic Energy) ; Love, B. (Vanderbilt U.) ; Luechtenborg, R. (Munster U.) ; Lynch, D. (Brookhaven) ; Maguire, C.F. (Vanderbilt U.) ; Makdisi, Y.I. (Brookhaven) ; Malakhov, A. (Dubna, JINR) ; Malik, M.D. (New Mexico U.) ; Manko, V.I. (Kurchatov Inst., Moscow) ; Mannel, E. (Nevis Labs, Columbia U.) ; Mao, Y. (Nishina Ctr., RIKEN) ; Masek, L. (Prague, Inst. Phys.) ; Masui, H. (Tsukuba U.) ; Matathias, F. (Nevis Labs, Columbia U.) ; McCumber, M. (SUNY, Stony Brook) ; McGaughey, P.L. (Los Alamos) ; Means, N. (SUNY, Stony Brook) ; Meredith, B. (Illinois U., Urbana) ; Miake, Y. (Tsukuba U.) ; Mignerey, A.C. (Maryland U.) ; Mikes, P. (Prague, Inst. Phys.) ; Miki, K. (Tsukuba U.) ; Milov, A. (Brookhaven) ; Mishra, M. (Banaras Hindu U.) ; Mitchell, J.T. (Brookhaven) ; Mohanty, A.K. (Bhabha Atomic Res. Ctr.) ; Morino, Y. (Tokyo U., CNS) ; Morreale, A. (UC, Riverside) ; Morrison, D.P. (Brookhaven) ; Moukhanova, T.V. (Kurchatov Inst., Moscow) ; Mukhopadhyay, D. (Vanderbilt U.) ; Murata, J. (Nishina Ctr., RIKEN) ; Nagamiya, S. (KEK, Tsukuba) ; Nagle, J.L. (Colorado U.) ; Naglis, M. (Weizmann Inst.) ; Nagy, M.I. (Eotvos U.) ; Nakagawa, I. (Brookhaven) ; Nakamiya, Y. (Hiroshima U.) ; Nakamura, T. (KEK, Tsukuba) ; Nakano, K. (Tokyo Inst. Tech.) ; Newby, J. (LLNL, Livermore) ; Nguyen, M. (SUNY, Stony Brook) ; Niita, T. (Tsukuba U.) ; Nouicer, R. (Brookhaven) ; Nyanin, A.S. (Kurchatov Inst., Moscow) ; O'Brien, E. (Brookhaven) ; Oda, S.X. (Tokyo U., CNS) ; Ogilvie, C.A. (Iowa State U.) ; Okada, K. (Brookhaven) ; Oka, M. (Tsukuba U.) ; Onuki, Y. (Nishina Ctr., RIKEN) ; Oskarsson, A. (Lund U.) ; Ouchida, M. (Hiroshima U.) ; Ozawa, K. (Tokyo U., CNS) ; Pak, R. (Brookhaven) ; Palounek, A.P.T. (Los Alamos) ; Pantuev, V. (SUNY, Stony Brook) ; Papavassiliou, V. (New Mexico State U.) ; Park, I.H. (Ewha Women's U., Seoul) ; Park, J. (Seoul Natl. U.) ; Park, S.K. (Korea U.) ; Park, W.J. (Korea U.) ; Pate, S.F. (New Mexico State U.) ; Pei, H. (Iowa State U.) ; Peng, J.-C. (Illinois U., Urbana) ; Pereira, H. (DAPNIA, Saclay) ; Peresedov, V. (Dubna, JINR) ; Peressounko, D.Yu. (Kurchatov Inst., Moscow) ; Pinkenburg, C. (Brookhaven) ; Pisani, R.P. (Brookhaven) ; Proissl, M. (SUNY, Stony Brook) ; Purschke, M.L. (Brookhaven) ; Purwar, A.K. (Los Alamos) ; Qu, H. (Georgia State U.) ; Rak, J. (New Mexico U.) ; Rakotozafindrabe, A. (Ecole Polytechnique) ; Ravinovich, I. (Weizmann Inst.) ; Read, K.F. (Tennessee U.) ; Rembeczki, S. (Florida Inst. Tech.) ; Reygers, K. (Munster U.) ; Riabov, V. (St. Petersburg, INP) ; Riabov, Y. (St. Petersburg, INP) ; Richardson, E. (Maryland U.) ; Roach, D. (Vanderbilt U.) ; Roche, G. (Clermont-Ferrand U.) ; Rolnick, S.D. (UC, Riverside) ; Rosati, M. (Iowa State U.) ; Rosen, C.A. (Colorado U.) ; Rosendahl, S.S.E. (Lund U.) ; Rosnet, P. (Clermont-Ferrand U.) ; Rukoyatkin, P. (Dubna, JINR) ; Ruzicka, P. (Prague, Inst. Phys.) ; Rykov, V.L. (Nishina Ctr., RIKEN) ; Sahlmueller, B. (Munster U.) ; Saito, N. (Brookhaven) ; Sakaguchi, T. (Brookhaven) ; Sakai, S. (Tsukuba U.) ; Sakashita, K. (Tokyo Inst. Tech.) ; Samsonov, V. (St. Petersburg, INP) ; Sano, S. (Waseda U., Cosmic Ray Div.) ; Sato, T. (Tsukuba U.) ; Sawada, S. (KEK, Tsukuba) ; Sedgwick, K. (UC, Riverside) ; Seele, J. (Colorado U.) ; Seidl, R. (Illinois U., Urbana) ; Semenov, A.Yu. (Iowa State U.) ; Semenov, V. (Serpukhov, IHEP) ; Seto, R. (UC, Riverside) ; Sharma, D. (Weizmann Inst.) ; Shein, I. (Serpukhov, IHEP) ; Shibata, T.-A. (Tokyo Inst. Tech.) ; Shigaki, K. (Hiroshima U.) ; Shimomura, M. (Tsukuba U.) ; Shoji, K. (Nishina Ctr., RIKEN) ; Shukla, P. (Bhabha Atomic Res. Ctr.) ; Sickles, A. (Brookhaven) ; Silva, C.L. (Sao Paulo U.) ; Silvermyr, D. 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(Nevis Labs, Columbia U.) ; Wood, J.P. (Abilene Christian U.) ; Woody, C.L. (Brookhaven) ; Wright, R.M. (Abilene Christian U.) ; Wysocki, M. (Colorado U.) ; Xie, W. (Brookhaven) ; Yamaguchi, Y.L. (Waseda U., Cosmic Ray Div.) ; Yamaura, K. (Hiroshima U.) ; Yang, R. (Illinois U., Urbana) ; Yanovich, A. (Serpukhov, IHEP) ; Ying, J. (Georgia State U.) ; Yokkaichi, S. (Brookhaven) ; Young, G.R. (Oak Ridge) ; Younus, I. (New Mexico U.) ; You, Z. (Peking U.) ; Yushmanov, I.E. (Kurchatov Inst., Moscow) ; Zajc, W.A. (Nevis Labs, Columbia U.) ; Zaudtke, O. (Munster U.) ; Zhang, C. (Oak Ridge) ; Zhou, S. (Beijing, Inst. Atomic Energy) ; Zolin, L. (Dubna, JINR)

Published in: Phys.Rev.Lett.
Year: 2010
Vol.: 104
Page No: 252301
Pages: 6

Abstract: Fast parton probes produced by hard scattering and embedded within collisions of large nuclei have shown that partons suffer large energy loss and that the produced medium may respond collectively to the lost energy. We present measurements of neutral pion trigger particles at transverse momenta p^t_T = 4-12 GeV/c and associated charged hadrons (p^a_T = 0.5-7 GeV/c) as a function of relative azimuthal angle Delta Phi at midrapidity in Au+Au and p+p collisions at sqrt(s_NN) = 200 GeV. These data lead to two major observations. First, the relative angular distribution of low momentum hadrons, whose shape modification has been interpreted as a medium response to parton energy loss, is found to be modified only for p^t_T < 7 GeV/c. At higher p^t_T, the data are consistent with unmodified or very weakly modified shapes, even for the lowest measured p^a_T. This observation presents a quantitative challenge to medium response scenarios. Second, the associated yield of hadrons opposite to the trigger particle in Au+Au relative to that in p+p (I_AA) is found to be suppressed at large momentum (IAA ~ 0.35-0.5), but less than the single particle nuclear modification factor (R_AA ~0.2).

Web-Page: http://inspirebeta.net/record/845169/files/PTYsix.png; http://inspirebeta.net/record/845169/files/iaaHeadAway.png; http://inspirebeta.net/record/845169/files/sigmaAWAY.png

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