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

6533b81ffe1ef96bd1278fa9

RESEARCH PRODUCT

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

Alice Mignerey C. Baumann J. L. Charvet Takao Sakaguchi S. P. Sorensen C. L. Woody A. Berdnikov S. Dairaku S. Kametani C. P. Singh O. Zaudtke S. N. White Senta Greene M. Kurosawa C. Klein-boesing O. Chvala M. Virius Y. Onuki Johannes Peter Wessels B. M. Johnson Zvi Hirsh Citron Y. Tanaka Seong H. Kim A. Isupov C. Suire A. T. Basye S. Hegyi B. Fadem E. O'brien K. Watanabe K. Shoji X. He L. Baksay A. D. Frawley C. H. Chen S. Bathe Jan Rak Jan Rak R. Lacey K. Nakano J. G. Lajoie M. Rosati S. Huang W. E. Sondheim Agneta Oskarsson A. Glenn I. Ravinovich D. Ivanischev J. Sziklai P. Chung J. Imrek B. Komkov P. W. Stankus J. T. Mitchell Y. Berdnikov Y. Aramaki V. Peresedov I. V. Sourikova I. J. Choi A. Kravitz Alexei Khanzadeev P. A. Rukoyatkin R. Granier De Cassagnac A. Adare H. Pei Vladimir Samsonov M. Bai R. A. Soltz H. Borel E. Stenlund Sung Keun Park W. A. Zajc W. Holzmann W. Holzmann Charles Maguire Brian Cole T. Ichihara A. A. Vinogradov M. Mishra S. Nagamiya J. Koster A. Datta M. Naglis Takahiro Fusayasu V. Baublis Jiangyong Jia Jiangyong Jia Jiangyong Jia Y. Goto C. L. Silva M. Grosse Perdekamp M. E. Connors Tamas Ferenc Csorgo Kiyoshi Tanida Kiyoshi Tanida E. Kistenev A. Denisov V. Cianciolo N. N. Ajitanand Norio Saito Y. Tomita M. A. L. Leite Maya Hachiya Shimomura V. S. Pantuev Zhiying You R. Seidl Vladislav Manko C. A. Ogilvie M. Slunečka R. Bennett S. Batsouli M. Kawashima Alexander Malakhov R. S. Towell Vaclav Vrba Klaus Johannes Reygers Mate Csanad D. Silvermyr H. Masui A. K. Dubey A. A. Bickley Kisung Lee Sergey Fokin Taku Gunji H. Gong J. Seele M. Finger T. K. Hemmick Takahiro Nakamura M. I. Nagy M. Gonin D. Watanabe J. M. Durham Yasuo Miake I. Tserruya Yu. Efremenko V. Singh B. Love J. L. Nagle J. Hamblen M. D. Malik Y. I. Makdisi Jongmin Lee Masayasu Ishihara E. Vznuzdaev I. Garishvili F. Wei L. Kochenda M. Issah M. Issah Laurent Bernard Aphecetche Kyeongpil Lee J. Ide A. Sukhanov F. Kajihara Rui Wei Peter Christiansen D. Winter D. Yu Peressounko S. Belikov Emily D. Richardson H. Pereira Susumu Oda A. Durum R. Belmont J. S. Kapustinsky Anne Marie Sickles A. G. Litvinenko F. Staley L. S. Zolin W. J. Park Christopher Rosen P. D. Barnes A. Yanovich A. Kozlov S. Butsyk M. Ouchida N. Means J. Asai G. R. Young Marisilvia Donadelli V. Bumazhnov V. Babintsev T. V. Moukhanova Y. Morino T. Kempel Dong-hun Kim D. Kawall H. Themann K. Okada M. J. Tannenbaum D. Lynch D. S. Jumper K. A. Drees C. Vale C. Vale H. A. Gustafsson A. Hadj Henni G. S. Kyle K. Sakashita R. Vértesi R. Vértesi V. L. Rykov T. Dahms Catherine Micaela Silvestre K. Yamaura O. Dietzsch E. T. Atomssa H. Valle H. Torii R. Seto K. Haruna B. Meredith John Hill C. Zhang Shingo Sakai S. Zhou Andry Malala Rakotozafindrabe B. S. Chang Christine Angela Aidala J. Klay K. S. Joo B. Sahlmueller Beomkyu Kim K. Boyle H. En'yo J. Murata Y. Nakamiya Y. J. Mao Minghui Liu Wei Xie James Alexander C. Y. Chi Yasutada Akiba Dipanwita Dutta D. Mukhopadhyay P. Ružička A. Baldisseri I. Danchev R. Tanabe Toru Sugitate S. D. Rolnick D. Layton M. J. Leitch K. B. Lee S. Rembeczki Jason Kamin A. Kiss Henner Buesching R. Averbeck Gerd Joachim Kunde Byung-sik Hong K. N. Barish Julia Velkovska David D'enterria T. L. Thomas A. Bazilevsky G. Baksay I. Shein Hongfang Liu Hongfang Liu D. E. Fields S. P. Stoll Viktor Riabov J. H. Kang Jason Newby W. C. Chang M. Heffner Ajit Kumar Mohanty Kenneth Francis Read Kenneth Francis Read J. E. Frantz T. A. Shibata Steve Edwards R. P. Pisani S. S.e. Rosendahl K. Sedgwick S. Sano S. Sano T. Sato Ryugo S. Hayano François Fleuret Alexandre Lebedev B. V. Jacak D. M. Lee K. Das Rushan Han K. S. Sim V. Dzhordzhadze G. Bunce Marcus Hohlmann D. Roach K. M. Kijima Y. Kwon Y. Kwon J. S. Haggerty A. V. Kazantsev A. Deshpande Y. Riabov S. Esumi E. P. Hartouni L. A. Linden Levy Eunja Kim M. L. Brooks A. Churyn J. P. Wood E. J. Desmond J. Jin Y. Fukao Kenta Shigaki D. Isenhower M. Mccumber A. Toia L. Mašek L. Mašek M. Nguyen Y. J. Kim K. Kiriluk P. Rosnet K. O. Eyser D. Jouan A. K. Purwar K. Fujiwara D. Sharma R. Yang H. Iinuma E. M. Takagui T. Hester M. Togawa A. S. Nyanin E. Vazquez-zambrano J. Park Xingguo Li F. Matathias D. Kotchetkov Y. L. Yamaguchi Y. L. Yamaguchi R. Ichimiya E. H. Kim R. Pak L. Tomášek E. Leitner Alexander Milov I. Nakagawa R. Luechtenborg Y. Watanabe A. P.t. Palounek T. Engelmore T. Niita Rachid Nouicer M. Proissl Kensuke Homma N. Kamihara N. A. Sparks I. Younus P. Mikeš P. Mikeš H. Qu K. Imai Y. Tsuchimoto P. Constantin S. Chernichenko H. W. Van Hecke B. Azmoun Kazuyoshi Kurita A. Soldatov J. Hanks A. Král M. J. Kweon K. I. Hahn O. Drapier Frank Ellinghaus B. Bassalleck V-n. Tram N. Grau A. Drees I. E. Yushmanov E. R. Kinney M. Konno T. C. Awes Kyoichiro Ozawa T. Liška J. S. Bok Jun Kikuchi Motoi Inaba R. M. Wright Tadaaki Isobe P. L. Mcgaughey M. Chiu M. Chiu D. P. Morrison S. Campbell Y. S. Lai A. Yu. Semenov J. Gosset Hideki Hamagaki K. Aoki V. E. Semenov G. David Tatsuya Chujo S. Yokkaichi Y. Ikeda J. G. Boissevain E. J. Mannel Jen-chieh Peng C. Pinkenburg M. Stepanov M. Oka A. Dion Inkyu Park Xiong Wang Dong Jo Kim Dong Jo Kim Atsushi Taketani A. Veicht A. Enokizono P. Liebing Tae-yeon Lee Martin Purschke S. Afanasiev A. Ster G. Roche A. Morreale D. Hornback Z. Fraenkel A. Taranenko Kazushi Miki T. Horaguchi Brajesh K. Singh R. K. Choudhury S. Tarafdar Eva Haslum B. Lenzi C. M. Camacho Prashant Shukla S. F. Pate H. Al-bataineh V. Papavassiliou S. Sawada J. Ying A. Franz M. Wysocki P. Tarján

subject

Physics Energy loss 010308 nuclear & particles physics Hadron General Physics and Astronomy FOS: Physical sciences Parton [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]01 natural sciences Azimuth Yield (chemistry)0103 physical sciences Heavy ion High Energy Physics::Experiment Atomic physics Nuclear Experiment (nucl-ex)010306 general physics Nuclear Experiment Nuclear Experiment

description

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).

year	journal	country	edition	language
2010-02-04

10.1103/physrevlett.104.252301 http://hal.in2p3.fr/in2p3-00497570