Article
An excitation function of K- and K+ production in Au plus Au reactions at the AGS
Physics Letters B
(2000)
Abstract
Mid-rapidity spectra and yields of K- and K+ have been measured for Au + Au collisions at 4, 6, 8, and 10.7 AGeV. The K- yield increases faster with beam energy than for K+ and hence the K-/K+ ratio increases with beam energy. This ratio is studied as a function of both root s and root s - root s(th) which allows the direct comparison of the kaon yields with respect to the production threshold in p + p reactions. For equal root s - root s(th) the measured ratio K-/K+ = 0.2 at energies above threshold in contrast to the K-/K+ ratio of near unity observed at energies below threshold. The use of the K-=/K* ratio to test the predicted changes of kaon properties in dense nuclear matter is discussed.
Disciplines
Publication Date
September 28, 2000
DOI
10.1016/S0370-2693(00)00916-3
Publisher Statement
This article is published as Ahle, L., Y. Akiba, K. Ashktorab, M. D. Baker, D. Beavis, B. Budick, J. Chang et al. "An excitation function of K− and K+ production in Au+ Au reactions at the AGS." Physics Letters B 490, no. 1 (2000): 53-60, doi:10.1016/S0370-2693(00)00916-3. Copyright Elsevier Science B.V. 2000. Posted with permission.
Citation Information
L. Ahle, Craig Ogilvie and et al.. "An excitation function of K- and K+ production in Au plus Au reactions at the AGS" Physics Letters B Vol. 490 Iss. 1-2 (2000) p. 53 - 60 Available at: http://works.bepress.com/craig-ogilvie/66/
Creative Commons license
This work is licensed under a Creative Commons CC_BY International License.