Detailed study of high-p(T) neutral pion suppression and azimuthal anisotropy in Au plus Au collisions at root s(NN) =200 GeV
Detailed study of high-p(T) neutral pion suppression and azimuthal anisotropy in Au plus Au collisions at root s(NN) =200 GeV
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DOI：
10.1103/physrevc.76.034904
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发表时间：
2006-11
影响因子：
3.1
通讯作者：
S. Adler;S. Afanasiev;C. Aidala;N. Ajitanand;Y. Akiba;J. Alexander;R. Amirikas;L. Aphecetche;S. Aronson;R. Averbeck;T. Awes;R. Azmoun;V. Babintsev;A. Baldisseri;K. Barish;P. Barnes;B. Bassalleck;S. Bathe;S. Batsouli;V. Baublis;A. Bazilevsky;S. Belikov;Y. Berdnikov;S. Bhagavatula;J. Boissevain;H. Borel;S. Borenstein;M. Brooks;D. Brown;N. Bruner;D. Bucher;H. Buesching;V. Bumazhnov;G. Bunce;J. Burward-Hoy;S. Butsyk;X. Camard;J. Chai;P. Chand;W. Chang;S. Chernichenko;C. Chi;J. Chiba;M. Chiu;I. Choi;J. Choi;R. Choudhury;T. Chujo;V. Cianciolo;Y. Cobigo;B. Cole;P. Constantin;D. d’Enterria;G. David;H. Delagrange;A. Denisov;A. Deshpande;E. Desmond;A. Devismes;O. Dietzsch;O. Drapier;A. Drees;K. Drees;A. Durum;D. Dutta;Y. Efremenko;K. Chenawi;A. Enokizono;H. En’yo;S. Esumi;L. Ewell;D. Fields;F. Fleuret;S. Fokin;B. Fox;Z. Fraenkel;J. Frantz;A. Franz;A. Frawley;S. Fung;S. Garpman;T. Ghosh;A. Glenn;G. Gogiberidze;M. Gonin;J. Gosset;Y. Goto;R. G. Cassagnac;N. Grau;S. Greene;M. Perdekamp;W. Guryn;H. Gustafsson;T. Hachiya;J. Haggerty;H. Hamagaki;A. G. Hansen;E. Hartouni;M. Harvey;R. Hayano;N. Hayashi;X. He;M. Heffner;T. Hemmick;J. Heuser;M. Hibino;J. Hill;W. Holzmann;K. Homma;B. Hong;A. Hoover;T. Ichihara;V. V. Ikonnikov-V.;K. Imai;D. Isenhower;M. Ishihara;M. Issah;A. Isupov;B. Jacak;W. Jang;Y. Jeong;J. Jia;O. Jinnouchi;B. Johnson;S. Johnson;K. Joo;D. Jouan;S. Kametani;N. Kamihara;J. Kang;S. Kapoor;K. Katou;S. Kelly;B. Khachaturov;A. Khanzadeev;J. Kikuchi;D. Kim;D. Kim;D. Kim;E. Kim;G. Kim;H. Kim;E. Kistenev;A. Kiyomichi;K. Kiyoyama;C. Klein-boesing;H. Kobayashi;L. Kochenda;V. Kochetkov;D. Koehler;T. Kohama;M. Kopytine;D. Kotchetkov;A. Kozlov;P. Kroon;C. H. Kuberg;K. Kurita;Y. Kuroki;M. Kweon;Y. Kwon;G. Kyle;R. Lacey;V. Ladygin;J. Lajoie;A. Lebedev;S. Leckey;D. Lee;S. Lee;M. Leitch;X. Li;H. Lim;A. Litvinenko;M. Liu;Y. Liu;C. Maguire;Y. Makdisi;A. Malakhov;V. Manko;Y. Mao;G. Martinez;M. Marx;H. Masui;F. Matathias;T. Matsumoto;P. McGaughey;E. Melnikov;F. Messer;Y. Miake;J. Milan;T. E. Miller;A. Milov;S. Mioduszewski;R. Mischke;G. Mishra;J. Mitchell;A. Mohanty;D. Morrison;J. Moss;F. Mühlbacher;D. Mukhopadhyay;M. Muniruzzaman;J. Murata;S. Nagamiya;J. Nagle;T. Nakamura;B. Nandi;M. Nara;J. Newby;P. Nilsson;A. Nyanin;J. Nystrand;E. O'brien;C. Ogilvie;H. Ohnishi;I. Ojha;K. Okada;M. Ono;V. Onuchin;A. Oskarsson;I. Otterlund;K. Oyama;K. Ozawa;D. Pal;A. Palounek;V. Pantuev;V. Papavassiliou;J. Park;A. Parmar;S. Pate;T. Peitzmann;J. Peng;V. Peresedov;C. Pinkenburg;R. Pisani;F. Plasil;M. Purschke;A. Purwar;J. Rak;I. Ravinovich;K. Read;M. Reuter;K. Reygers;V. Riabov;Y. Riabov;G. Roche;A. Romañá;M. Rosati;P. Rosnet;S. Ryu;M. Sadler;N. Saito;T. Sakaguchi;M. Sakai;S. Sakai;V. Samsonov;L. Sanfratello;R. Santo;H. Sato;S. Sato;S. Sawada;Y. Schutz;V. Semenov;R. Seto;M. Shaw;T. Shea;T. Shibata;K. Shigaki;T. Shiina;C. Silva;D. Silvermyr;K. Sim;C. P. Singh;V. Singh;M. Sivertz;A. Soldatov;R. Soltz;W. Sondheim;S. Sorensen;I. Sourikova;F. Staley;P. Stankus;E. Stenlund;M. Stepanov;A. Ster;S. Stoll;T. Sugitate;J. Sullivan;E. M. Takagui;A. Taketani;M. Tamai;K. Tanaka;Y. Tanaka;K. Tanida;M. Tannenbaum;P. Tarjan;J. Tepe;T. Thomas;J. Tojo;H. Torii;R. Towell;I. Tserruya;H. Tsuruoka;S. Tuli;H. Tydesjö;N. Tyurin;J. Velkovska;M. Velkovsky;V. Veszpremi;L. Villatte;A. Vinogradov;M. Volkov;E. Vznuzdaev;X. Wang;Y. Watanabe;S. White;F. Wohn;C. Woody;W. Xie;Y. Yang;A. Yanovich;S. Yokkaichi;G. Young;I. Yushmanov;W. Zajc;C. Zhang;S. Zhou;S. Zhou;L. Zolin;R. Durietz;H. Vanhecke
中科院分区：
文献类型：
--
作者：
S. Adler;S. Afanasiev;C. Aidala;N. Ajitanand;Y. Akiba;J. Alexander;R. Amirikas;L. Aphecetche;S. Aronson;R. Averbeck;T. Awes;R. Azmoun;V. Babintsev;A. Baldisseri;K. Barish;P. Barnes;B. Bassalleck;S. Bathe;S. Batsouli;V. Baublis;A. Bazilevsky;S. Belikov;Y. Berdnikov;S. Bhagavatula;J. Boissevain;H. Borel;S. Borenstein;M. Brooks;D. Brown;N. Bruner;D. Bucher;H. Buesching;V. Bumazhnov;G. Bunce;J. Burward-Hoy;S. Butsyk;X. Camard;J. Chai;P. Chand;W. Chang;S. Chernichenko;C. Chi;J. Chiba;M. Chiu;I. Choi;J. Choi;R. Choudhury;T. Chujo;V. Cianciolo;Y. Cobigo;B. Cole;P. Constantin;D. d’Enterria;G. David;H. Delagrange;A. Denisov;A. Deshpande;E. Desmond;A. Devismes;O. Dietzsch;O. Drapier;A. Drees;K. Drees;A. Durum;D. Dutta;Y. Efremenko;K. Chenawi;A. Enokizono;H. En’yo;S. Esumi;L. Ewell;D. Fields;F. Fleuret;S. Fokin;B. Fox;Z. Fraenkel;J. Frantz;A. Franz;A. Frawley;S. Fung;S. Garpman;T. Ghosh;A. Glenn;G. Gogiberidze;M. Gonin;J. Gosset;Y. Goto;R. G. Cassagnac;N. Grau;S. Greene;M. Perdekamp;W. Guryn;H. Gustafsson;T. Hachiya;J. Haggerty;H. Hamagaki;A. G. Hansen;E. Hartouni;M. Harvey;R. Hayano;N. Hayashi;X. He;M. Heffner;T. Hemmick;J. Heuser;M. Hibino;J. Hill;W. Holzmann;K. Homma;B. Hong;A. Hoover;T. Ichihara;V. V. Ikonnikov-V.;K. Imai;D. Isenhower;M. Ishihara;M. Issah;A. Isupov;B. Jacak;W. Jang;Y. Jeong;J. Jia;O. Jinnouchi;B. Johnson;S. Johnson;K. Joo;D. Jouan;S. Kametani;N. Kamihara;J. Kang;S. Kapoor;K. Katou;S. Kelly;B. Khachaturov;A. Khanzadeev;J. Kikuchi;D. Kim;D. Kim;D. Kim;E. Kim;G. Kim;H. Kim;E. Kistenev;A. Kiyomichi;K. Kiyoyama;C. Klein-boesing;H. Kobayashi;L. Kochenda;V. Kochetkov;D. Koehler;T. Kohama;M. Kopytine;D. Kotchetkov;A. Kozlov;P. Kroon;C. H. Kuberg;K. Kurita;Y. Kuroki;M. Kweon;Y. Kwon;G. Kyle;R. Lacey;V. Ladygin;J. Lajoie;A. Lebedev;S. Leckey;D. Lee;S. Lee;M. Leitch;X. Li;H. Lim;A. Litvinenko;M. Liu;Y. Liu;C. Maguire;Y. Makdisi;A. Malakhov;V. Manko;Y. Mao;G. Martinez;M. Marx;H. Masui;F. Matathias;T. Matsumoto;P. McGaughey;E. Melnikov;F. Messer;Y. Miake;J. Milan;T. E. Miller;A. Milov;S. Mioduszewski;R. Mischke;G. Mishra;J. Mitchell;A. Mohanty;D. Morrison;J. Moss;F. Mühlbacher;D. Mukhopadhyay;M. Muniruzzaman;J. Murata;S. Nagamiya;J. Nagle;T. Nakamura;B. Nandi;M. Nara;J. Newby;P. Nilsson;A. Nyanin;J. Nystrand;E. O'brien;C. Ogilvie;H. Ohnishi;I. Ojha;K. Okada;M. Ono;V. Onuchin;A. Oskarsson;I. Otterlund;K. Oyama;K. Ozawa;D. Pal;A. Palounek;V. Pantuev;V. Papavassiliou;J. Park;A. Parmar;S. Pate;T. Peitzmann;J. Peng;V. Peresedov;C. Pinkenburg;R. Pisani;F. Plasil;M. Purschke;A. Purwar;J. Rak;I. Ravinovich;K. Read;M. Reuter;K. Reygers;V. Riabov;Y. Riabov;G. Roche;A. Romañá;M. Rosati;P. Rosnet;S. Ryu;M. Sadler;N. Saito;T. Sakaguchi;M. Sakai;S. Sakai;V. Samsonov;L. Sanfratello;R. Santo;H. Sato;S. Sato;S. Sawada;Y. Schutz;V. Semenov;R. Seto;M. Shaw;T. Shea;T. Shibata;K. Shigaki;T. Shiina;C. Silva;D. Silvermyr;K. Sim;C. P. Singh;V. Singh;M. Sivertz;A. Soldatov;R. Soltz;W. Sondheim;S. Sorensen;I. Sourikova;F. Staley;P. Stankus;E. Stenlund;M. Stepanov;A. Ster;S. Stoll;T. Sugitate;J. Sullivan;E. M. Takagui;A. Taketani;M. Tamai;K. Tanaka;Y. Tanaka;K. Tanida;M. Tannenbaum;P. Tarjan;J. Tepe;T. Thomas;J. Tojo;H. Torii;R. Towell;I. Tserruya;H. Tsuruoka;S. Tuli;H. Tydesjö;N. Tyurin;J. Velkovska;M. Velkovsky;V. Veszpremi;L. Villatte;A. Vinogradov;M. Volkov;E. Vznuzdaev;X. Wang;Y. Watanabe;S. White;F. Wohn;C. Woody;W. Xie;Y. Yang;A. Yanovich;S. Yokkaichi;G. Young;I. Yushmanov;W. Zajc;C. Zhang;S. Zhou;S. Zhou;L. Zolin;R. Durietz;H. Vanhecke
测量了根s（NN）=200 GeV Au+Au碰撞中中快度中性π介子（pi（0））产生随横向动量、p（T）、碰撞中心度和相对于反应面的角度的变化。数据表示在设计质心能量下运行的第一次RHIC Au+Au的PHENIX实验的最终pi（0）结果。它们包括使用PHENIX Level-2触发器获得的额外数据，对于p（T）>6 GeV/c，统计数据比之前发布的结果增加了3倍以上。我们使用核修饰因子R-AA评估了相对于点状标度期望的高p（T）pi（0）产率的抑制。本文给出了在碰撞中心性下九个仓的R-AA对p（T）的依赖关系。我们分别在较大的p（T）箱上积分R-AA，以更精确地显示高p（T）抑制的中心依赖性。然后，我们评估的依赖性的高p（T）抑制的π介子相对于事件反应平面的发射角Δ φ的碰撞中心的7个仓。我们表明，高p（T）pi（0）的产量变化强烈与Δ φ，与先前的测量一致1，2。我们表明，这种变化持续在最外围的bin访问在此分析。对于外围仓，我们观察到没有抑制中性π介子产生对齐的反应平面，而垂直于反应平面产生的π（0）的产量被抑制了一个类似于2的因素。我们使用不同的可能的描述部分子能量损失依赖于喷流路径长度平均值来分析不同p（T）仓中pi（0）抑制的组合中心性和Delta phi依赖性，以确定单个几何图像是否可以解释所观察到的抑制模式。
Measurements of neutral pion (pi(0)) production at midrapidity in root s(NN)=200 GeV Au+Au collisions as a function of transverse momentum, p(T), collision centrality, and angle with respect to reaction plane are presented. The data represent the final pi(0) results from the PHENIX experiment for the first RHIC Au+Au run at design center-of-mass energy. They include additional data obtained using the PHENIX Level-2 trigger with more than a factor of 3 increase in statistics over previously published results for p(T)>6 GeV/c. We evaluate the suppression in the yield of high-p(T) pi(0)'s relative to pointlike scaling expectations using the nuclear modification factor R-AA. We present the p(T) dependence of R-AA for nine bins in collision centrality. We separately integrate R-AA over larger p(T) bins to show more precisely the centrality dependence of the high-p(T) suppression. We then evaluate the dependence of the high-p(T) suppression on the emission angle Delta phi of the pions with respect to event reaction plane for seven bins in collision centrality. We show that the yields of high-p(T) pi(0)'s vary strongly with Delta phi, consistent with prior measurements 1,2. We show that this variation persists in the most peripheral bin accessible in this analysis. For the peripheral bins we observe no suppression for neutral pions produced aligned with the reaction plane, whereas the yield of pi(0)'s produced perpendicular to the reaction plane is suppressed by a factor of similar to 2. We analyze the combined centrality and Delta phi dependence of the pi(0) suppression in different p(T) bins using different possible descriptions of parton energy loss dependence on jet path-length averages to determine whether a single geometric picture can explain the observed suppression pattern.