Proton and deuteron production in Au+Au reactions at [Formula Presented]

L. Ahle, Y. Akiba, K. Ashktorab, M. D. Baker, D. Beavis, H. C. Britt, J. Chang, C. Chasman, Z. Chen, C. Y. Chi, Y. Y. Chu, V. Cianciolo, B. A. Cole, H. J. Crawford, J. B. Cumming, R. Debbe, J. C. Dunlop, W. Eldredge, J. Engelage, S. Y. FungE. Garcia, S. Gushue, H. Hamagaki, L. F. Hansen, R. S. Hayano, G. Heintzelman, E. Judd, J. Kang, E. J. Kim, A. Kumagai, K. Kurita, J. H. Lee, J. Luke, Y. Miake, A. Mignerey, B. Moskowitz, M. Moulson, C. Muentz, S. Nagamiya, M. N. Namboodiri, C. A. Ogilvie, J. Olness, L. P. Remsberg, H. Sako, T. C. Sangster, R. Seto, J. Shea, K. Shigaki, R. Soltz, S. G. Steadman, G. S.F. Stephans, M. J. Tannenbaum, J. H. Thomas, S. Ueno-Hayashi, F. Videbæk, F. Wang, Y. Wu, H. Xiang, G. H. Xu, K. Yagi, H. Yao, W. A. Zajc, F. Zhu

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2 Citations (Scopus)

Abstract

Proton and deuteron distributions from [Formula Presented] Au + Au collisions measured by the E802 Collaboration in experiment E-866 are presented. The invariant yield of protons and deuterons is studied as a function of the transverse mass for different cuts of rapidity and centrality. At low [Formula Presented] the proton and deuteron invariant spectra deviate from a single exponential shape. The average [Formula Presented] as function of centrality and rapidity is used to explore the effect of collective transverse flow in the reaction. The ratio of the deuteron to squared proton yield as a function of transverse momentum, rapidity, and centrality is used to probe the coalescence model of deuteron production. This ratio is constant as a function of rapidity only for the most central cuts and decreases with the centrality for every rapidity cut. The ratio of the differential cross section of the deuteron to the squared differential cross section of the proton, for the most central cut, is not constant as a function of [Formula Presented]

Original languageEnglish
Pages (from-to)16
Number of pages1
JournalPhysical Review C - Nuclear Physics
Volume60
Issue number6
DOIs
Publication statusPublished - 1999

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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