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Kaon interferometric probes of space-time evolution in Au+Au collisions at sqrt(s_NN) = 200 GeV

S. Afanasiev C. Aidala N.N. Ajitanand Y. Akiba J. Alexander A. Al-Jamel K. Aoki Laurent Aphecetche 1 R. Armendariz S.H. Aronson R. Averbeck T.C. Awes B. Azmoun V. Babintsev A. Baldisseri K.N. Barish P.D. Barnes B. Bassalleck S. Bathe S. Batsouli V. Baublis F. Bauer A. Bazilevsky S. Belikov R. Bennett Y. Berdnikov M.T. Bjorndal J.G. Boissevain H. Borel K. Boyle M.L. Brooks D.S. Brown D. Bucher H. Buesching V. Bumazhnov G. Bunce J.M. Burward-Hoy S. Butsyk S. Campbell J.-S. Chai S. Chernichenko J. Chiba C.Y. Chi M. Chiu I.J. Choi T. Chujo V. Cianciolo C.R. Cleven Y. Cobigo 2 B.A. Cole M.P. Comets P. Constantin M. Csan'Ad T. Cs¨org˝o T. Dahms K. Das G. David H. Delagrange 1 A. Denisov D. d'Enterria A. Deshpande E.J. Desmond O. Dietzsch A. Dion J.L. Drachenberg O. Drapier 3 A. Drees A.K. Dubey A. Durum V. Dzhordzhadze Y.V. Efremenko J. Egdemir A. Enokizono H. En'Yo B. Espagnon S. Esumi D.E. Fields F. Fleuret 3 S.L. Fokin B. Forestier Z. Fraenkel J.E. Frantz A. Franz A.D. Frawley Y. Fukao S.-Y. Fung S. Gadrat F. Gastineau 1 Marie Germain 1 A. Glenn M. Gonin 3 J. Gosset Y. Goto R. Granier de Cassagnac 3 N. Grau S.V. Greene M. Grosse Perdekamp T. Gunji H.-°a. Gustafsson T. Hachiya A. Hadj Henni 1 J.S. Haggerty M.N. Hagiwara H. Hamagaki H. Harada E.P. Hartouni K. Haruna M. Harvey E. Haslum K. Hasuko R. Hayano M. Heffner T.K. Hemmick J.M. Heuser X. He H. Hiejima J.C. Hill R. Hobbs M. Holmes W. Holzmann K. Homma B. Hong T. Horaguchi M.G. Hur T. Ichihara K. Imai M. Inaba D. Isenhower L. Isenhower M. Ishihara T. Isobe M. Issah A. Isupov B.V. Jacak J. Jia J. Jin O. Jinnouchi B.M. Johnson K.S. Joo D. Jouan F. Kajihara S. Kametani N. Kamihara M. Kaneta J.H. Kang T. Kawagishi A.V. Kazantsev Steven Kelly A. Khanzadeev D.J. Kim E. Kim Y.-S. Kim E. Kinney A. Kiss E. Kistenev A. Kiyomichi C. Klein-Boesing L. Kochenda V. Kochetkov B. Komkov M. Konno D. Kotchetkov A. Kozlov P.J. Kroon G.J. Kunde K. Kurihara K. Kurita M.J. Kweon Y. Kwon G.S. Kyle R. Lacey J.G. Lajoie A. Lebedev Y. Le Bornec S. Leckey D.M. Lee M.K. Lee M.J. Leitch M.A.L. Leite H. Lim A. Litvinenko M.X. Liu X.H. Li C.F. Maguire Y.I. Makdisi A. Malakhov M.D. Malik V.I. Manko H. Masui F. Matathias M.C. Mccain P.L. Mcgaughey Y. Miake T.E. Miller A. Milov S. Mioduszewski G.C. Mishra J.T. Mitchell D.P. Morrison J.M. Moss T.V. Moukhanova D. Mukhopadhyay J. Murata S. Nagamiya Y. Nagata J.L. Nagle M. Naglis T. Nakamura J. Newby M. Nguyen B.E. Norman R. Nouicer A.S. Nyanin J. Nystrand E. O'Brien C.A. Ogilvie H. Ohnishi I.D. Ojha H. Okada K. Okada O.O. Omiwade A. Oskarsson I. Otterlund K. Ozawa D. Pal A.P.T. Palounek V. Pantuev V. Papavassiliou J. Park W.J. Park S.F. Pate H. Pei J.-C. Peng H. Pereira 2 V. Peresedov D.Yu. Peressounko C. Pinkenburg R.P. Pisani M.L. Purschke A.K. Purwar H. Qu J. Rak I. Ravinovich K.F. Read M. Reuter K. Reyger V. Riabov Y. Riabov G. Roche 4 A. Romana 3 M. Rosati S.S.E. Rosendahl P. Rosnet 4 P. Rukoyatkin V.L. Rykov S.S. Ryu B. Sahlmueller N. Saito T. Sakaguchi S. Sakai V. Samsonov H.D. Sato S. Sato S. Sawada V. Semenov R. Seto D. Sharma T.K. Shea I. Shein T.A. Shibata K. Shigaki M. Shimomura T. Shohjoh K. Shoji A. Sickles C.L. Silva D. Silvermyr K.S. Sim C.P. Singh V. Singh S. Skutnik W.C. Smith A. Soldatov R.A. Soltz W.E. Sondheim S.P. Sorensen I.V. Sourikova F. Staley 2 P.W. Stankus E. Stenlund M. Stepanov A. Ster S.P. Stoll T. Sugitate C. Suire J.P. Sullivan J. Sziklai T. Tabaru S. Takagi E.M. Takagui A. Taketani K.H. Tanaka Y. Tanaka K. Tanida M.J. Tannenbaum A. Taranenko P. Tarj'An T.L. Thomas M. Togawa J. Tojo H. Torii R.S. Towell V.-N. Tram 3 I. Tserruya Y. Tsuchimoto S.K. Tuli H. Tydesj¨o N. Tyurin C. Vale H. Valle H.W. van Hecke J. Velkovska R. Vertesi A.A. Vinogradov E. Vznuzdaev M. Wagner X.R. Wang Y. Watanabe J. Wessels S.N. White N. Willis D. Winter C.L. Woody M. Wysocki W. Xie A. Yanovich S. Yokkaichi G.R. Young I. Younus I.E. Yushmanov W.A. Zajc O. Zaudtke C. Zhang J. Zim'Anyi L. Zolin
Abstract : Bose-Einstein correlations of charged kaons are measured for Au+Au collisions at sqrt(s_NN) = 200 GeV and are compared to charged pion probes, which have a larger hadronic scattering cross section. Three dimensional Gaussian source radii are extracted, along with a one-dimensional kaon emission source function. The centrality dependences of the three Gaussian radii are well described by a single linear function if N_part^1/3 with zero intercept. Imaging analysis shows a deviation from a Gaussian tail at r >~ 10 fm, although the bulk emission at lower radius is well-described by a Gaussian. The presence of a non-Gaussian tail in the kaon source reaffirms that the particle emission region in a heavy ion collision is extended, and that similar measurements with pions are not solely due to the decay of long-lived resonances.
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Submitted on : Friday, May 29, 2009 - 10:51:03 AM
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S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, J. Alexander, et al.. Kaon interferometric probes of space-time evolution in Au+Au collisions at sqrt(s_NN) = 200 GeV. Physical Review Letters, American Physical Society, 2009, 103, pp.142301. ⟨10.1103/PhysRevLett.103.142301⟩. ⟨in2p3-00389621⟩

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