Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+Au collisions at sNN=200 GeV

S. S. Adler, S. Afanasiev,C. Aidala,N. N. Ajitanand,Y. Akiba,J. Alexander,R. Amirikas, L. Aphecetche,S. H. Aronson, R. Averbeck,T. C. Awes,V. Babintsev, A. Baldisseri,K. N. Barish,P. D. Barnes,B. Bassalleck,S. Batsouli,V. Baublis,A. Bazilevsky,S. Belikov,Y. Berdnikov,S. Bhagavatula,J. G. Boissevain,H. Borel,S. Borenstein,M. L. Brooks,D. S. Brown,N. Bruner,D. Bucher,H. Buesching,V. Bumazhnov,G. Bunce,J. M. Burward-Hoy,S. Butsyk,J.-S. Chai, P. Chand,W. C. Chang,S. Chernichenko,C. Y. Chi,J. Chiba,M. Chiu,I. J. Choi,J. Choi, R. K. Choudhury,T. Chujo,V. Cianciolo,Y. Cobigo,B. A. Cole,P. Constantin,D. d'Enterria, G. David,H. Delagrange,A. Denisov,A. Deshpande,E. J. Desmond,A. Devismes,O. Drapier,A. Drees,K. A. Drees,A. Durum, D. Dutta,Y. V. Efremenko,T. Ichihara,V. V. Ikonnikov,K. Imai,D. Isenhower,M. Ishihara,M. Issah,A. Isupov,W. Y. Jang,Y. Jeong, J. Jia,B. M. Johnson,S. C. Johnson, K. S. Joo,D. Jouan,S. Kametani,N. Kamihara,J. H. Kang,S. S. Kapoor,K. Katou,S. Kelly,B. Khachaturov,A. Khanzadeev,J. Kikuchi, D. H. Kim, D. J. Kim, D. W. Kim,E. Kim,B. Kim, H. J. 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. J. Kroon,C. H. Kuberg,K. Kurita,Y. Kuroki,M. J. Kweon,Y. Kwon,G. S. Kyle,R. Lacey,V. Ladygin,J. G. Lajoie, A. Lebedev,S. Leckey,D. M. Lee,S. Lee,M. J. Leitch,H. Lim,A. Litvinenko, Y. Liu, C. F. Maguire,Y. I. Makdisi,A. Malakhov,Y. Mao,G. Martinez,M. D. Marx,H. Masui,F. Matathias,T. Matsumoto,P. L. McGaughey, E. Melnikov, F. Messer, Y. Miake,J. Milan,T. E. Miller,A. Milov,S. Mioduszewski,R. E. Mischke,G. C. Mishra,J. T. Mitchell,A. K. Mohanty,D. P. Morrison,J. M. Moss,F. Muhlbacher,D. Mukhopadhyay,M. Muniruzzaman,J. Murata,S. Nagamiya,J. L. Nagle,T. Nakamura, B. K. Nandi,M. Nara, J. Newby, P. Nilsson,A. S. Nyanin, J. Nystrand,E. O'Brien,C. A. Ogilvie,H. Ohnishi,I. D. Ojha,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. 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.-C. 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,R. Rietz, G. Roche,A. Romana,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.-A. Shibata,K. Shigaki,T. Shiina,C. Silva,D. Silvermyr,K. Sim,C. 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. Takagui,A. Taketani,M. Tamai,K. Tanaka,Y. Tanaka,K. Tanida,M. Tannenbaum,P. Tarján,J. Tepe, T. Thomas,A. Toia, J. Tojo,H. Torii,R. Towell, I. Tserruya,H. Tsuruoka,S. Tuli,H. Tydesjö, N. Tyurin,J. Velkovska,M. Velkovsky,V. Veszprémi,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,L. Zolin

PHYSICAL REVIEW C（2007）

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摘要

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.

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