Neutral pion production with respect to centrality and reaction plane in Au+Au collisions atsNN=200GeV

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RESEARCH PRODUCT

Neutral pion production with respect to centrality and reaction plane in Au+Au collisions atsNN=200GeV

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

subject

Physics Quantum chromodynamics Nuclear physics Nuclear and High Energy Physics AdS/CFT correspondence Particle physics Pion Luminosity (scattering theory)Path length Conformal field theory Parton Relativistic Heavy Ion Collider

description

The PHENIX experiment has measured the production of pi(0)s in Au + Au collisions at root S-NN = 200 GeV. The new data offer a fourfold increase in recorded luminosity, providing higher precision and a larger reach in transverse momentum, p(T), to 20 GeV/c. The production ratio of eta/pi(0) is 0.46 +/- 0.01(stat) +/- 0.05(syst), constant with p(T) and collision centrality. The observed ratio is consistent with earlier measurements, as well as with the p + p and d + Au values. pi(0) are suppressed by a factor of 5, as in earlier findings. However, with the improved statistical precision a small but significant rise of the nuclear modification factor R-AA vs p(T), with a slope of 0.0106 +/-(0.0034)(0.0029) (Gev/c)(-1), is discernible in central collisions. A phenomenological extraction of the average fractional parton energy loss shows a decrease with increasing p(T). To study the path-length dependence of suppression, the pi(0) yield is measured at different angles with respect to the event plane; a strong azimuthal dependence of the pi(0) R-AA is observed. The data are compared to theoretical models of parton energy loss as a function of the path length L in the medium. Models based on perturbative quantum chromodynamics are insufficient to describe the data, while a hybrid model utilizing pQCD for the hard interactions and anti-de-Sitter space/conformal field theory (AdS/CFT) for the soft interactions is consistent with the data. DOI: 10.1103/PhysRevC.87.034911

year	journal	country	edition	language
2013-03-28	Physical Review C

https://doi.org/10.1103/physrevc.87.034911