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

Title
Neutral pion production with respect to centrality and reaction plane in Au+Au collisions at √sNN=200 GeV
Authors
Adare A.Afanasiev S.Aidala C.Ajitanand N.N.Akiba Y.Al-Bataineh H.Alexander J.Aoki K.Aramaki Y.Atomssa E.T.Averbeck R.Awes T.C.Azmoun B.Babintsev V.Bai M.Baksay G.Baksay L.Barish K.N.Bassalleck B.Basye A.T.Bathe S.Baublis V.Baumann C.Bazilevsky A.Belikov S.Belmont R.Bennett R.Berdnikov A.Berdnikov Y.Bickley A.A.Bok J.S.Boyle K.Brooks M.L.Buesching H.Bumazhnov V.Bunce G.Butsyk S.Camacho C.M.Campbell S.Chen C.-H.Chi C.Y.Chiu M.Choi I.J.Choudhury R.K.Christiansen P.Chujo T.Chung P.Chvala O.Cianciolo V.Citron Z.Cole B.A.Connors M.Constantin P.Csanad M.Csorgo T.Dahms T.Dairaku S.Danchev I.Das K.Datta A.David G.Denisov A.Deshpande A.Desmond E.J.Dietzsch O.Dion A.Donadelli M.Drapier O.Drees A.Drees K.A.Durham J.M.Durum A.Dutta D.Edwards S.Efremenko Y.V.Ellinghaus F.Engelmore T.Enokizono A.En'Yo H.Esumi S.Fadem B.Fields D.E.Finger M.Fleuret F.Fokin S.L.Fraenkel Z.Frantz J.E.Franz A.Frawley A.D.Fujiwara K.Fukao Y.Fusayasu T.Garishvili I.Glenn A.Gong H.Gonin M.Goto Y.Granier De Cassagnac R.Grau N.Greene S.V.Grosse Perdekamp M.Gunji T.Gustafsson H.-A.Haggerty J.S.Hahn K.I.Hamagaki H.Hamblen J.Han R.Hanks J.Hartouni E.P.Haslum E.Hayano R.He X.Heffner M.Hemmick T.K.Hester T.Hill J.C.Hohlmann M.Holzmann W.Homma K.Hong B.Horaguchi T.Hornback D.Huang S.Ichihara T.Ichimiya R.Ide J.Ikeda Y.Imai K.Inaba M.Isenhower D.Ishihara M.Isobe T.Issah M.Isupov A.Ivanischev D.Jacak B.V.Jia J.Jin J.Johnson B.M.Joo K.S.Jouan D.Jumper D.S.Kajihara F.Kametani S.Kamihara N.Kamin J.Kang J.H.Kapustinsky J.Karatsu K.Kawall D.Kawashima M.Kazantsev A.V.Kempel T.Khanzadeev A.Kijima K.M.Kim B.I.Kim D.H.Kim D.J.Kim E.Kim E.-J.Kim S.H.Kim Y.J.Kinney E.Kiriluk K.Kiss A.Kistenev E.Kochenda L.Komkov B.Konno M.Koster J.Kotchetkov D.Kozlov A.Kral A.Kravitz A.Kunde G.J.Kurita K.Kurosawa M.Kwon Y.Kyle G.S.Lacey R.Lai Y.S.Lajoie J.G.Lebedev A.Lee D.M.Lee J.Lee K.Lee K.B.Lee K.S.Leitch M.J.Leite M.A.L.Leitner E.Lenzi B.Li X.Liebing P.Linden Levy L.A.Liska T.Litvinenko A.Liu H.Liu M.X.Love B.Luechtenborg R.Lynch D.Maguire C.F.Makdisi Y.I.Malakhov A.Malik M.D.Manko V.I.Mannel E.Mao Y.Masui H.Matathias F.McCumber M.McGaughey P.L.Means N.Meredith B.Miake Y.Mignerey A.C.Mikes P.Miki K.Milov A.Mishra M.Mitchell J.T.Mohanty A.K.Morino Y.Morreale A.Morrison D.P.Moukhanova T.V.Murata J.Nagamiya S.Nagle J.L.Naglis M.Nagy M.I.Nakagawa I.Nakamiya Y.Nakamura T.Nakano K.Newby J.Nguyen M.Niida T.Nouicer R.Nyanin A.S.O'Brien E.Oda S.X.Ogilvie C.A.Oka M.Okada K.Onuki Y.Oskarsson A.Ouchida M.Ozawa K.Pak R.Pantuev V.Papavassiliou V.Park I.H.Park J.Park S.K.Park W.J.Pate S.F.Pei H.Peng J.-C.Pereira H.Peresedov V.Peressounko D.Y.Pinkenburg C.Pisani R.P.Proissl M.Purschke M.L.Purwar A.K.Qu H.Rak J.Rakotozafindrabe A.Ravinovich I.Read K.F.Reygers K.Riabov V.Riabov Y.Richardson E.Roach D.Roche G.Rolnick S.D.Rosati M.Rosen C.A.Rosendahl S.S.E.Rosnet P.Rukoyatkin P.Ruzicka P.Sahlmueller B.Saito N.Sakaguchi T.Sakashita K.Samsonov V.Sano S.Sato T.Sawada S.Sedgwick K.Seele J.Seidl R.Semenov A.Y.Seto R.Sharma D.Shein I.Shibata T.-A.Shigaki K.Shimomura M.Shoji K.Shukla P.Sickles A.Silva C.L.Silvermyr D.Silvestre C.Sim K.S.Singh B.K.Singh C.P.Singh V.Slunecka M.Soltz R.A.Sondheim W.E.Sorensen S.P.Sourikova I.V.Sparks N.A.Stankus P.W.Stenlund E.Stoll S.P.Sugitate T.Sukhanov A.Sziklai J.Takagui E.M.Taketani A.Tanabe R.Tanaka Y.Tanida K.Tannenbaum M.J.Tarafdar S.Taranenko A.Tarjan P.Themann H.Thomas T.L.Togawa M.Toia A.Tomasek L.Torii H.Towell R.S.Tserruya I.Tsuchimoto Y.Vale C.Valle H.Van Hecke H.W.Vazquez-Zambrano E.Veicht A.Velkovska J.Vertesi R.Vinogradov A.A.Virius M.Vrba V.Vznuzdaev E.Wang X.R.Watanabe D.Watanabe K.Watanabe Y.Wei F.Wei R.Wessels J.White S.N.Winter D.Wood J.P.Woody C.L.Wright R.M.Wysocki M.Xie W.Yamaguchi Y.L.Yamaura K.Yang R.Yanovich A.Ying J.Yokkaichi S.You Z.Young G.R.Younus I.Yushmanov I.E.Zajc W.A.Zhang C.Zhou S.Zolin L.
Ewha Authors
한인식박일흥
SCOPUS Author ID
한인식scopus
Issue Date
2013
Journal Title
Physical Review C - Nuclear Physics
ISSN
0556-2813JCR Link
Citation
vol. 87, no. 3
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The PHENIX experiment has measured the production of π0s in Au+Au collisions at √sNN = 200 GeV. The new data offer a fourfold increase in recorded luminosity, providing higher precision and a larger reach in transverse momentum, pT, to 20 GeV/c. The production ratio of η/π0 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. π0 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 RAA vs pT, with a slope of 0.0106±0.00290. 0034 (Gev/c)-1, is discernible in central collisions. A phenomenological extraction of the average fractional parton energy loss shows a decrease with increasing pT. To study the path-length dependence of suppression, the π0 yield is measured at different angles with respect to the event plane; a strong azimuthal dependence of the π0 RAA 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. © 2013 American Physical Society.
DOI
10.1103/PhysRevC.87.034911
Appears in Collections:
사범대학 > 과학교육과 > Journal papers
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