d̄ and 3He Production in √SNN = 130 GeV Au + Au collisions

C. Adler,Zubayer Ahammed,C. E. Allgower,J. Amonett,B. D. Anderson,Matthew J. Anderson,G. S. Averichev,J. Balewski,O. Barannikova,Lee Stuart Barnby,J. Baudot,S. Bekele,V. V. Belaga, R. Bellwied,J. Berger,H. Bichsel,L. C. Bland,C. O. Blyth,B. E. Bonner, A. Boucham,A. V. Brandin,R. V. Cadman, H. Caines,M. Calderón de la Barca Sánchez,A. Cardenas,J. Carroll,J. Castillo,M. Castro, D. Cebra,Subhasis Chattopadhyay,Mingshui Chen,Yu Chen, S. P. Chernenko,M. Cherney, A. Chikanian,B. Choi,W. Christie,J. P. Coffin,Thomas Michael Cormier,J. G. Cramer,H. J. Crawford, M. DeMello, W. S. Deng,A. A. Derevschikov,L. Didenko,J. E. Draper,V. B. Dunin,J. C. Dunlop, V. Eckardt,L. G. Efimov,V. Emelianov,J. Engelage,G. Eppley,B. Erazmus, P. Fachini, V. Faine,E. Finch,Y. Fisyak,D. Flierl,K. J. Foley,J. Fu, N.D. Gagunashvili,J. Gans,L. Gaudichet,Marie Germain,Frank Jm Geurts,V. Ghazikhanian,J. Grabski,O. A. Grachov,D.E. Greiner,V. Grigoriev, M. Guedon,E. Gushin,T. J. Hallman, D. Hardtke,J. W. Harris,M. Heffner,S. Heppelmann, T. Herston,Boris Hippolyte, A. S. Hirsch, E. Hjort, Gerald W Hoffmann, M. Horsley, H. Z. Huang, T. J. Humanic,H. Hümmler, G. Igo,A. Ishihara,Yu. Ivanshin,Peter Martin Jacobs,W. W. Jacobs,Malgorzata Anna Janik,Ian Johnson,Peter Graham Jones,E. G. Judd,Masashi Kaneta,Morton Kaplan,D. Keane,Adam Ryszard Kisiel

msra（2001）

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摘要

The first measurements of light antinucleus production in Au+Au collisions at the Relativistic Heavy-Ion Collider are reported. The observed production rates for d¯ and ³He¯ are much larger than in lower energy nucleus-nucleus collisions. A coalescence model analysis of the yields indicates that there is little or no increase in the antinucleon freeze-out volume compared to collisions at CERN SPS energy. These analyses also indicate that the ³He¯ freeze-out volume is smaller than the d¯ freeze-out volume.

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