Recent results from E866

Ahle, L.; Akiba, Y.; Ashktorab, K.; Baker, M. D.; Beavis, D.; Britt, H. C.; Chang, James; Chasman, C.; Chen, Z.; Chi, C.Y.; Chu, Y. Y.; Cianciolo, V.; Cole, B.; Crawford, H. J.; Cumming, J. B.; Debbe, R.; Eldredge, W.; Engelage, J.; Fung, S. Y.; Gonin, M.; Gushue, S.; Hamagaki, H.; Hansen, L.F.; Hayano, R.; Hayashi, Shûichi; Heintzelman, G.; Homma, S.; Judd, E. G.; Kaneko, H.; Kang, Joon Ho; Kim, Eun-Jung; Kumagai, A.; Kurita, K.; Lee, J.-H.; Vine, M.J. Le; Liu, H.; Luke, Jon C.; Miake, Y.; Mignerey, A. C.; Moskowitz, B.; Moulson, M.; Nagamiya, S.; Namboodiri, M.N.; Ogilvie, C. A.; Olness, J.W.; Remsberg, L. P.; Ryan, J. J.; Sako, H.; Sangster, T. C.; Seto, R.; Shea, J.; Shigaki, K.; Soltz, R. A.; Steadman, S. G.; Stephans, G. S. F.; Tannenbaum, M. J.; Thomas, J. H.; Videbæk, F.; Wang, F.; Wang, Y.; Woodruff, D. S.; Wu, Y.; Xiang, H.; Xu, G.; Yagi, K.; Yang, X.; Zajc, W. A.; Zhu, Qingjun; Zhu, Fan

doi:10.1016/0375-9474(95)00239-w

Cited by 46 publications

(58 citation statements)

References 10 publications

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“…In other words, the N π /A part ratio is almost independent of the centrality. On the other hand, it is well-known that the K + (usually shown in terms of K + /π + ratio) yield increases more than linearly with the A part for beam energies ranging from 1A GeV [32][33][34]46] to 10A GeV [36,51]. Our results for K/π andK/π ratios in Au+Au collisions are shown in Fig.…”

Section: A Centrality Dependencementioning

confidence: 56%

“…This is due to the increasing importance of the secondary processes involving baryon-resonances, pions, and hyperons in the case of antikaon production, when going from peripheral to central collisions. The E866 data for Au+Au collisions at 11.6A GeV/c indicate that K − /π + ratio also increases with increasing centrality [51]. The centrality dependence of the K − /K + ratios is shown in Figs.…”

Section: A Centrality Dependencementioning

confidence: 91%

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K−/K+ratios in relativistic heavy-ion collisions

Brown

1998

Phys. Rev. C

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We study K − /K + ratios as a function of centrality (participant nucleon number), transverse mass (mt), and rapidity, in heavy-ion collisions at beam energies between 1A and 2A GeV. We use the relativistic transport model that includes expicitly the strangeness degrees of freedom and consider two scenarios for kaon properties in dense matter, one with and one without medium modifications of their properties. In both scenarios, The K − /K + ratio does not change very much with the centrality, while the K/π and K/π ratios increase with increasing centrality. Significant differences are predicted, both in magnitudes and shapes, for the mt spectra and rapidity distributions of K − /K + ratio. Experimental measurement of these ratios, currently under investigation by the FOPI, KaoS, E866, and E895 collaborations, will be useful in revealing the kaon in-medium properties.

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Section: A Centrality Dependencementioning

confidence: 56%

Section: A Centrality Dependencementioning

confidence: 91%

K−/K+ratios in relativistic heavy-ion collisions

Brown

1998

Phys. Rev. C

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“…Experiments E866 and E917 at the AGS aim to characterize as fully as possible the emission of particles from Au+Au collisions to probe the properties of such dense matter. In Quark Matter '96 [1] the E866 collaboration reported that the proton rapidity distribution for central collisions is peaked at mid-rapidity [2]. This is consistent with forming a dense, baryon-rich system.…”

Section: Introductionmentioning

confidence: 88%

Au+Au reactions at the AGS: Experiments E866 and E917

Ogilvie¹,

Ahle²,

Akiba³

et al. 1998

Nuclear Physics A

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“…We have therefore recalculated the efficiency in the region of the distortion using a correction based on data from E866 [14,15]. The current analysis was also extended to lower rapidity than in [10].…”

Section: Correction Of Track Reconstruction Efficiencies In E891mentioning

confidence: 99%

“…Six main parameters are listed first. The mean transverse expansion velocity, < v t >, longitudinal boost angle, < η >, and mean multiplicity, N Λ , are obtained using formulas (12), (13) and (15).…”

Section: The Blast Wave Parameterizationmentioning

confidence: 99%

Nuclear matter expansion parameters from the measurement of differential multiplicities for Λ production in central Au + Au collisions at AGS

Ahmad

Bonner²,

Efremov³

et al. 1998

Nuclear Physics A

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The double differential multiplicities and rapidity distributions for Λ hyperon production in central Au + Au interactions at AGS in the range of rapidities from 1.7 to 3.2 and the range of transverse kinetic energies from 0.0 to 0.7 GeV are parametrized in terms of the the Blast Wave approximation. The longitudinal and transverse radial expansion parameters and the mean temperature of Λ hyperons after the freeze-out of the nuclear matter are presented. The predictions of the RQMD model with and without mean field potentials are compared to our data. Both variants of RQMD are parameterized in terms of the Blast Wave model and the results of such parameterizations are compared to the experimental ones. It is found that inclusion of the mean field potentials in RQMD is essential to account for the strong expansion observed in the data.

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Recent results from E866

Cited by 46 publications

References 10 publications

K−/K+ratios in relativistic heavy-ion collisions

K−/K+ratios in relativistic heavy-ion collisions

Au+Au reactions at the AGS: Experiments E866 and E917

Nuclear matter expansion parameters from the measurement of differential multiplicities for Λ production in central Au + Au collisions at AGS

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