Multistrange Baryon Production In Au-Au Collisions At Root S(Nn)=130 Gev

J. Adams,C. Adler, M. M. Aggarwal, Z. Ahammed,J. Amonett,B. D. Anderson,M. Anderson,D. Arkhipkin,G. S. Averichev, S. K. Badyal,J. Balewski,O. Barannikova, L. S. Barnby,J. Baudot,S. Bekele,V. V. Belaga,R. Bellwied,J. Berger,B. I. Bezverkhny,S. Bhardwaj,P. Bhaskar, A. K. Bhati, H. Bichsel,A. Billmeier,L. C. Bland,C. O. Blyth,B. E. Bonner,M. Botje, A. Boucham,A. Brandin,A. Bravar,R. V. Cadman,X. Z. Cai,H. Caines,J. Carroll,J. Castillo,M. Castro, D. Cebra,P. Chaloupka,S. Chattopadhyay,H. F. Chen,Y. Chen,S. P. Chernenko,M. Cherney, A. Chikanian, B. Choi,W. Christie, J. P. Coffin, T. M. Cormier, J. G. Cramer,H. J. Crawford,A. A. Derevschikov,L. Didenko,T. Dietel,J. E. Draper,A. K. Dubey,V. B. Dunin,J. C. Dunlop,M. R. Dutta Majumdar,V. Eckardt,L. G. Efimov,V. Emelianov,J. Engelage,G. Eppley,B. Erazmus,M. Estienne,P. Fachini,V. Faine,J. Faivre,R. Fatemi,K. Filimonov,P. Filip,E. Finch,Y. Fisyak,D. Flierl,K. J. Foley,J. Fu,C. A. Gagliardi,M. S. Ganti,T. D. Gutierrez,N. Gagunashvili,J. Gans,L. Gaudichet,M. Germain,V. Ghazikhanian,P. Ghosh,J. E. Gonzalez,O. Grachov,V. Grigoriev,S. Gronstal,D. Grosnick,M. Guedon,S. M. Guertin,A. Gupta,E. Gushin,T. J. Hallman,D. Hardtke,J. W. Harris,M. Heinz,T. W. Henry,S. Heppelmann,T. Herston, B. Hippolyte, A. Hirsch, E. Hjort, G. W. Hoffmann,M. Horsley,H. Z. Huang,S. L. Huang, T. J. Humanic, G. Igo,A. Ishihara, P. Jacobs,W. W. Jacobs,M. Janik, P. G. Jones,E. G. Judd,S. Kabana,M. Kaneta,M. Kaplan,D. Keane,J. Kiryluk,A. Kisiel,J. Klay, S. R. Klein,A. Klyachko,D. D. Koetke,T. Kollegger,A. S. Konstantinov,M. Kopytine,L. Kotchenda,A. D. Kovalenko,M. Kramer,P. Kravtsov, K. Krueger,C. Kuhn,A. I. Kulikov,A. Kumar,G. J. Kunde, C. L. Kunz,R. Kh,A. A. Kuznetsov, M. A. C. Lamont,J. M. Landgraf,S. Lange,C. P. Lansdell,B. Lasiuk,F. Laue,J. Lauret,A. Lebedev, R. Lednicky,V. M. Leontiev,M. J. LeVine,C. Li,S. J. Lindenbaum, M. A. Lisa, F. Liu,L. Liu,Z. Liu,Q. J. Liu,T. Ljubicic,W. J. Llope,R. S. Longacre,M. Lopez-Noriega,T. Ludlam, D. Lynn,J. Ma, Y. G. Ma,D. Magestro,S. Mahajan,L. K. Mangotra,D. P. Mahapatra,R. Majka,R. Manweiler,S. Margetis, C. Markert,L. Martin,J. Marx,H. S. Matis,A. Matulenko,T. S. McShane,F. Meissner

PHYSICAL REVIEW LETTERS（2004）

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摘要

The transverse mass spectra and midrapidity yields for Xis and Omegas are presented. For the 10% most central collisions, the (Xi) over bar (+)/h(-) ratio increases from the Super Proton Synchrotron to the Relativistic Heavy Ion Collider energies while the Xi(-)/h(-) stays approximately constant. A hydrodynamically inspired model fit to the Xi spectra, which assumes a thermalized source, seems to indicate that these multistrange particles experience a significant transverse flow effect, but are emitted when the system is hotter and the flow is smaller than values obtained from a combined fit to pi, K, p, and Lambdas.

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关键词

strangeness production,sps

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