Scaling Properties Of Fractional Momentum Loss Of High-P(T) Hadrons In Nucleus-Nucleus Collisions At Root S(Nn) From 62.4 Gev To 2.76 Tev
A. Adare,S. Afanasiev,C. Aidala,N. N. Ajitanand,Y. Akiba,R. Akimoto,H. Al-Bataineh,J. Alexander,M. Alfred,H. Al-Ta'Ani,A. Angerami,K. Aoki,N. Apadula,L. Aphecetche,Y. Aramaki,R. Armendariz,S. H. Aronson,J. Asai,H. Asano,E. C. Aschenauer,E. T. Atomssa,R. Averbeck,T. C. Awes,B. Azmoun,V. Babintsev,M. Bai,G. Baksay,L. Baksay,A. Baldisseri,N. S. Bandara,B. Bannier,K. N. Barish,P. D. Barnes,B. Bassalleck,A. T. Basye,S. Bathe,S. Batsouli,V. Baublis,C. Baumann,S. Baumgart,A. Bazilevsky,M. Beaumier,S. Beckman,S. Belikov,R. Belmont,R. Bennett,A. Berdnikov,Y. Berdnikov,A. A. Bickley,D. S. Blau,J. G. Boissevain,J. S. Bok,H. Borel,K. Boyle,M. L. Brooks,J. Bryslawskyj,H. Buesching,V. Bumazhnov,G. Bunce,S. Butsyk,C. M. Camacho,S. Campbell,P. Castera,B. S. Chang,J. -L. Charvet,C. -H. Chen,S. Chernichenko,C. Y. Chi,J. Chiba,M. Chiu,I. J. Choi,J. B. Choi,S. Choi,R. K. Choudhury,P. Christiansen,T. Chujo,P. Chung,A. Churyn,O. Chvala,V. Cianciolo,Z. Citron,C. R. Cleven,B. A. Cole,M. P. Comets,M. Connors,P. Constantin,M. Csanad,T. Csoergo,T. Dahms,S. Dairaku,I. Danchev,T. W. Danley,K. Das,A. Datta,M. S. Daugherity,G. David,M. B. Deaton,K. Deblasio,K. Dehmelt,H. Delagrange,A. Denisov,D. D'Enterria,A. Deshpande,E. J. Desmond,K. V. Dharmawardane,O. Dietzsch,L. Ding,A. Dion,P. B. Diss,J. H. Do,M. Donadelli,L. D'Orazio,O. Drapier,A. Drees,K. A. Drees,A. K. Dubey,J. M. Durham,A. Durum,D. Dutta,V. Dzhordzhadze,S. Edwards,Y. V. Efremenko,J. Egdemir,F. Ellinghaus,W. S. Emam,T. Engelmore,A. Enokizono,H. En'Yo,S. Esumi,K. O. Eyser,B. Fadem,N. Feege,D. E. Fields,M. Finger,M. Finger,F. Fleuret,S. L. Fokin,Z. Fraenkel,J. E. Frantz,A. Franz,A. D. Frawley,K. Fujiwara,Y. Fukao,T. Fusayasu,S. Gadrat,K. Gainey,C. Gal,P. Gallus,P. Garg,A. Garishvili,I. Garishvili,H. Ge,F. Giordano,A. Glenn,H. Gong,X. Gong,M. Gonin,J. Gosset,Y. Goto,R. Granier De Cassagnac,N. Grau,S. V. Greene,M. Grosse Perdekamp,T. Gunji,L. Guo,H. -A. Gustafsson,T. Hachiya,A. Hadj Henni,C. Haegemann,J. S. Haggerty,K. I. Hahn,H. Hamagaki,J. Hamblen,H. F. Hamilton,R. Han,S. Y. Han,J. Hanks,H. Harada,E. P. Hartouni,K. Haruna,S. Hasegawa,T. O. S. Haseler,K. Hashimoto,E. Haslum,R. Hayano,X. He,M. Heffner,T. K. Hemmick,T. Hester,H. Hiejima,J. C. Hill,R. Hobbs,M. Hohlmann,R. S. Hollis,W. Holzmann,K. Homma,B. Hong,T. Horaguchi,Y. Hori,D. Hornback,T. Hoshino,N. Hotvedt,J. Huang,S. Huang,T. Ichihara,R. Ichimiya,J. Ide,H. Iinuma,Y. Ikeda,K. Imai,J. Imrek,M. Inaba,Y. Inoue,A. Iordanova,D. Isenhower,L. Isenhower,M. Ishihara,T. Isobe,M. Issah,A. Isupov,D. Ivanishchev,B. V. Jacak,M. Javani,M. Jezghani,J. Jia,X. Jiang,J. Jin,O. Jinnouchi,B. M. Johnson,K. S. Joo,D. Jouan,D. S. Jumper,F. Kajihara,S. Kametani,N. Kamihara,J. Kamin,S. Kanda,M. Kaneta,S. Kaneti,B. H. Kang,J. H. Kang,J. S. Kang,H. Kanou,J. Kapustinsky,K. Karatsu,M. Kasai,D. Kawall,M. Kawashima,A. V. Kazantsev,T. Kempel,J. A. Key,V. Khachatryan,A. Khanzadeev,K. M. Kijima,J. Kikuchi,B. I. Kim,C. Kim,D. H. Kim,D. J. Kim,E. Kim,E. -J. Kim,G. W. Kim,H. J. Kim,K. -B. 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Yushmanov,W. A. Zajc,O. Zaudtke,A. Zelenski,C. Zhang,S. Zhou,J. Zimamyi,L. Zolin,L. Zou
PHYSICAL REVIEW C（2016）
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摘要
Measurements of the fractional momentum loss (S-loss = delta p(T) / p(T)) of high-transverse-momentum-identified hadrons in heavy-ion collisions are presented. Using pi(0) in Au + Au and Cu + Cu collisions at root s(NN) = 62.4 and 200 GeV measured by the PHENIX experiment at the Relativistic Heavy Ion Collider and and charged hadrons in Pb + Pb collisions measured by the ALICE experiment at the Large Hadron Collider, we studied the scaling properties of S-loss as a function of a number of variables: the number of participants, N-part, the number of quark participants, N-qp, the charged-particle density, dN(ch)/d(eta), and the Bjorken energy density times the equilibration time, epsilon(Bj)tau(0). We find that the p(T), where S-loss has its maximum, varies both with centrality and collision energy. Above the maximum, S-loss tends to follow a power-law function with all four scaling variables. The data at root s(NN) = 200 GeV and 2.76 TeV, for sufficiently high particle densities, have a common scaling of S-loss with dN(ch)/d(eta) and epsilon(Bj)tau(0), lending insight into the physics of parton energy loss.
