Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au plus Au collisions at root s ( NN ) = 200

Longitudinal density correlations of produced matter in Au+Au collisions at root s(NN)=200 GeV have been measured from the inclusive charged particle distributions as a function of pseudorapidity window sizes. The extracted alpha xi parameter, related to the susceptibility of the density fluctuations in the long-wavelength limit, exhibits a nonmonotonic behavior as a function of the number of participant nucleons, N-part. A local maximum is seen at N-part similar to 90, with corresponding energy density based on the Bjorken picture of epsilon(Bj)tau similar to 2.4 GeV/(fm(2)c) with a transverse area size of 60 fm(2). This behavior may suggest a critical phase boundary based on the Ginzburg-Landau framework. Disciplines Nuclear | Physics Comments This article is published as Adler, Stephen Scott, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas et al. "Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+ Au collisions at s NN= 200 GeV." Physical Review C 76, no. 3 (2007): 034903. DOI:10.1103/PhysRevC.76.034903. Posted with permission. Authors S. S. Adler, Sergey Belikov, S. Bhagavatula, Paul Constantin, Nathan C. Grau, John C. Hill, John G. Lajoie, Alexandre Lebedev, Craig Ogilvie, Jan Rak, Marzia Rosati, F. K. Wohn, et al., and PHENIX Collaboration This article is available at Iowa State University Digital Repository: http://lib.dr.iastate.edu/physastro_pubs/332 PHYSICAL REVIEW C 76, 034903 (2007) Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+Au collisions at √sN N = 200 GeV S. S. Adler,5 S. Afanasiev,17 C. Aidala,5 N. N. Ajitanand,43 Y. Akiba,20,38 J. Alexander,43 R. Amirikas,12 L. Aphecetche,45 S. H. Aronson,5 R. Averbeck,44 T. C. Awes,35 R. Azmoun,44 V. Babintsev,15 A. Baldisseri,10 K. N. Barish,6 P. D. Barnes,27 B. Bassalleck,33 S. Bathe,30 S. Batsouli,9 V. Baublis,37 A. Bazilevsky,15,39 S. Belikov,15,16 Y. Berdnikov,40 S. Bhagavatula,16 J. G. Boissevain,27 H. Borel,10 S. Borenstein,25 M. L. Brooks,27 D. S. Brown,34 N. Bruner,33 D. Bucher,30 H. Buesching,30 V. Bumazhnov,15 G. Bunce,5,39 J. M. Burward-Hoy,26,44 S. Butsyk,44 X. Camard,45 J.-S. Chai,18 P. Chand,4 W. C. Chang,2 S. Chernichenko,15 C. Y. Chi,9 J. Chiba,20 M. Chiu,9 I. J. Choi,52 J. Choi,19 R. K. Choudhury,4 T. Chujo,5 V. Cianciolo,35 Y. Cobigo,10 B. A. Cole,9 P. Constantin,16 D. d’Enterria,45 G. David,5 H. Delagrange,45 A. Denisov,15 A. Deshpande,39 E. J. Desmond,5 A. Devismes,44 O. Dietzsch,41 O. Drapier,25 A. Drees,44 K. A. Drees,5 A. Durum,15 D. Dutta,4 Y. V. Efremenko,35 K. El Chenawi,49 A. Enokizono,14 H. En’yo,38,39 S. Esumi,48 L. Ewell,5 D. E. Fields,33,39 F. Fleuret,25 S. L. Fokin,23 B. D. Fox,39 Z. Fraenkel,51 J. E. Frantz,9 A. Franz,5 A. D. Frawley,12 S.-Y. Fung,6 S. Garpman,29,* T. K. Ghosh,49 A. Glenn,46 G. Gogiberidze,46 M. Gonin,25 J. Gosset,10 Y. Goto,39 R. Granier de Cassagnac,25 N. Grau,16 S. V. Greene,49 M. Grosse Perdekamp,39 W. Guryn,5 H.-Å. Gustafsson,29 T. Hachiya,14 J. S. Haggerty,5 H. Hamagaki,8 A. G. Hansen,27 E. P. Hartouni,26 M. Harvey,5 R. Hayano,8 N. Hayashi,38 X. He,13 H. W. van Hecke,27 M. Heffner,26 T. K. Hemmick,44 J. M. Heuser,44 M. Hibino,50 J. C. Hill,16 W. Holzmann,43 K. Homma,14 B. Hong,22 A. Hoover,34 T. Ichihara,38,39 V. V. Ikonnikov,23 K. Imai,24,38 D. Isenhower,1 M. Ishihara,38 M. Issah,43 A. Isupov,17 B. V. Jacak,44,† W. Y. Jang,22 Y. Jeong,19 J. Jia,44 O. Jinnouchi,38 B. M. Johnson,5 S. C. Johnson,26 K. S. Joo,31 D. Jouan,36 S. Kametani,8,50 N. Kamihara,38,47 J. H. Kang,52 S. S. Kapoor,4 K. Katou,50 S. Kelly,9 B. Khachaturov,51 A. Khanzadeev,37 J. Kikuchi,50 D. H. Kim,31 D. J. Kim,52 D. W. Kim,19 E. Kim,42 G.-B. Kim,25 H. J. Kim,52 E. Kistenev,5 A. Kiyomichi,48 K. Kiyoyama,32 C. Klein-Boesing,30 H. Kobayashi,38,39 L. Kochenda,37 V. Kochetkov,15 D. Koehler,33 T. Kohama,14 M. Kopytine,44 D. Kotchetkov,6 A. Kozlov,51 P. J. Kroon,5 C. H. Kuberg,1,27,* K. Kurita,39 Y. Kuroki,48 M. J. Kweon,22 Y. Kwon,52 G. S. Kyle,34 R. Lacey,43 V. Ladygin,17 J. G. Lajoie,16 A. Lebedev,16,23 S. Leckey,44 D. M. Lee,27 S. Lee,19 M. J. Leitch,27 X. H. Li,6 H. Lim,42 A. Litvinenko,17 M. X. Liu,27 Y. Liu,36 C. F. Maguire,49 Y. I. Makdisi,5 A. Malakhov,17 V. I. Manko,23 Y. Mao,7,38 G. Martinez,45 M. D. Marx,44 H. Masui,48 F. Matathias,44 T. Matsumoto,8,50 P. L. McGaughey,27 E. Melnikov,15 F. Messer,44 Y. Miake,48 J. Milan,43 T. E. Miller,49 A. Milov,44,51 S. Mioduszewski,5 R. E. Mischke,27 G. C. Mishra,13 J. T. Mitchell,5 A. K. Mohanty,4 D. P. Morrison,5 J. M. Moss,27 F. Mühlbacher,44 D. Mukhopadhyay,51 M. Muniruzzaman,6 J. Murata,38,39 S. Nagamiya,20 J. L. Nagle,9 T. Nakamura,14 B. K. Nandi,6 M. Nara,48 J. Newby,46 P. Nilsson,29 A. S. Nyanin,23 J. Nystrand,29 E. O’Brien,5 C. A. Ogilvie,16 H. Ohnishi,5,38 I. D. Ojha,3,49 K. Okada,38 M. Ono,48 V. Onuchin,15 A. Oskarsson,29 I. Otterlund,29 K. Oyama,8 K. Ozawa,8 D. Pal,51 A. P. T. Palounek,27 V. Pantuev,44 V. Papavassiliou,34 J. Park,42 A. Parmar,33 S. F. Pate,34 T. Peitzmann,30 J.-C. Peng,27 V. Peresedov,17 C. Pinkenburg,5 R. P. Pisani,5 F. Plasil,35 M. L. Purschke,5 A. K. Purwar,44 J. Rak,16 I. Ravinovich,51 K. F. Read,35,46 M. Reuter,44 K. Reygers,30 V. Riabov,37,40 Y. Riabov,37 R. du Rietz,29 G. Roche,28 A. Romana,25,* M. Rosati,16 P. Rosnet,28 S. S. Ryu,52 M. E. Sadler,1 N. Saito,38,39 T. Sakaguchi,8,50 M. Sakai,32 S. Sakai,48 V. Samsonov,37 L. Sanfratello,33 R. Santo,30 H. D. Sato,24,38 S. Sato,5,48 S. Sawada,20 Y. Schutz,45 V. Semenov,15 R. Seto,6 M. R. Shaw,1,27 T. K. Shea,5 T.-A. Shibata,38,47 K. Shigaki,14,20 T. Shiina,27 C. L. Silva,41 D. Silvermyr,27,29 K. S. Sim,22 C. P. Singh,3 V. Singh,3 M. Sivertz,5 A. Soldatov,15 R. A. Soltz,26 W. E. Sondheim,27 S. P. Sorensen,46 I. V. Sourikova,5 F. Staley,10 P. W. Stankus,35 E. Stenlund,29 M. Stepanov,34 A. Ster,21 S. P. Stoll,5 T. Sugitate,14 J. P. Sullivan,27 E. M. Takagui,41 A. Taketani,38,39 M. Tamai,50 K. H. Tanaka,20 Y. Tanaka,32 K. Tanida,38 M. J. Tannenbaum,5 P. Tarján,11 J. D. Tepe,1,27 T. L. Thomas,33 A. Toia,44 J. Tojo,24,38 H. Torii,24,38 R. S. Towell,1 I. Tserruya,51 H. Tsuruoka,48 S. K. Tuli,3 H. Tydesjö,29 N. Tyurin,15 J. Velkovska,5,44 M. Velkovsky,44 V. Veszprémi,11 L. Villatte,46 A. A. Vinogradov,23 M. A. Volkov,23 E. Vznuzdaev,37 X. R. Wang,13 Y. Watanabe,38,39 S. N. White,5 F. K. Wohn,16 C. L. Woody,5 W. Xie,6 Y. Yang,7 A. Yanovich,15 S. Yokkaichi,38,39 G. R. Young,35 I. E. Yushmanov,23 W. A. Zajc,9 C. Zhang,9 S. Zhou,7 S. J. Zhou,51 and L. Zolin17 (PHENIX Collaboration) 1Abilene Christian University, Abilene, Texas 79699, USA 2Institute of Physics, Academia Sinica, Taipei 11529, Taiwan 3Department of Physics, Banaras Hindu University, Varanasi 221005, India 4Bhabha Atomic Research Centre, Bombay 400 085, India 5Brookhaven National Laboratory, Upton, New York 11973-5000, USA 6University of California-Riverside, Riverside, California 92521, USA 7China Institute of Atomic Energy (CIAE), Beijing, People’s Republic of China 8Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan 9Columbia University, New York 10027, USA, and Nevis Laboratories, Irvington, New York 10533, USA 10Dapnia, CEA Saclay, F-91191 Gif-sur-Yvette, France 11Debrecen University, Egyetem tér 1, H-4010 Debrecen, Hungary 12Florida State University, Tallahassee, Florida 32306, USA 13Georgia State University, Atlanta, Georgia 30303, USA 14Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526, Japan 0556-2813/2007/76(3)/034903(33) 034903-1 ©2007 The American Physical Society S. S. ADLER et al. PHYSICAL REVIEW C 76, 034903 (2007) 15Institute for High Energy Physics (IHEP), Protvino, Russia 16Iowa State University, Ames, Iowa 50011, USA 17Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow Region, Russia 18KAERI, Cyclotron Application Laboratory, Seoul, South Korea 19Kangnung National University, Kangnung 210-702, South Korea 20KEK, High Energy Accelerator Research Organization, Tsukuba-shi, Ibaraki-ken 305-0801, Japan 21KFKI Research Institute for Particle and Nuclear Physics (RMKI), P. O. Box 49, H-1525 Budapest 114, Hungary 22Korea University, Seoul, 136-701, Korea 23Russian Research Center “Kurchatov Institute,” Moscow, Russia 24Kyoto University, Kyoto 606-8502, Japan 25Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS-IN2P3, Route de Saclay, F-91128 Palaiseau, France 26Lawrence Livermore National Laboratory, Livermore, California 94550, USA 27Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA 28LPC, Université Blaise Pascal, CNRS-IN2P3, Clermont-Fd, F-63177 Aubiere Cedex, France 29Department of Physics, Lund University, Box 118, SE-221 00 Lund, Sweden 30Institut für Kernphysik, University of Muenster, D-48149 Muenster, Germany 31Myongji University, Yongin, Kyonggido 449-728, Korea 32Nagasaki Institute of Applied Science, Nagasaki-shi, Nagasaki 851-0193, Japan 33University of New Mexico, Albuquerque, New Mexico 87131, USA 34New Mexico State University, Las Cruces, New Mexico 88003, USA 35Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 36IPN-Orsay, Université Paris Sud, CNRS-IN2P3, BP1, F-91406 Orsay, France 37PNPI, Petersburg Nuclear Physics Institute, Gatchina, Russia 38RIKEN (The Institute of Physical and Chemical Research), Wako, Saitama 351-0198, Japan 39RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA 40St. Petersburg State Technical University, St. Petersburg, Russia 41Universidade de São Paulo, Instituto de Fı́sica, Caixa Postal 66318, São Paulo CEP05315-970, Brazil 42System Electronics Laboratory, Seoul National University, Seoul, South Korea 43Chemistry Department, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA 44Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794, USA 45SUBATECH (Ecole des Mines de Nantes, CNRS-IN2P3, Université de Nantes), Boı̂te Postal, F-20722-44307, Nantes,