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CP violation in strange baryon decays: A report from Fermilab experiment 871

By C. James, R. A. Burnstein, A. Chakravorty, A. Chan, Y. C. Chen, W. S. Choong, K. Clark, E. C. Dukes, C. Durandet, J. Felix, R. Fuzesy, G. Gidal, H. R. Gustafson, C. Ho, T. Holmstrom, M. Huang, M. Jenkins, D. M. Kaplan, L. M. Lederman, N. Leros, M. J. Longo, F. Lopez, W. Luebke, K. B. Luk, G. Moreno, K. Nelson, V. Papavassiliou, J. P. Perroud, D. Rajaram, H. A. Rubin, M. Sosa, P. K. Teng, B. Turko, J. Volk, C. G. White, S. L. White and P. Zyla

Abstract

Fermilab experiment 871, HyperCP, is a search for direct CP violation in Ξ and Λ hyperon decays. A non-zero value in the asymmetry parameter A, defined in terms of the decay parameter products αΞαΛαΞαΛ and ,αΞ̄αΛ̄, would be unambiguous evidence for direct CP violation. The first data-taking run finished at the end of 1997 and accumulated over one billion Ξ−Ξ− and +Ξ̄+ decays. A sensitivity in A of ≈ 10−4≈10−4 is expected. A review of CP violation in hyperon decays is given, the HyperCP detector is described, and the status of the data analysis is discussed. © 1999 American Institute of Physics

Publisher: The American Institute of Physics
Year: 1999
DOI identifier: 10.1063/1.57786
OAI identifier: oai:deepblue.lib.umich.edu:2027.42/87472
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