Observation of parity violation in the Ω -→ΛK- decay

L. C. Lu*, R. A. Burnstein, A. Chakravorty, Y. C. Chen, W. S. Choong, K. Clark, E. C. Dukes, C. Durandet, J. Felix, Y. Fu, G. Gidal, H. R. Gustafson, T. Holmstrom, M. Huang, C. James, C. M. Jenkins, T. D. Jones, D. M. Kaplan, M. J. Longo, W. LuebkeK. B. Luk, K. S. Nelson, H. K. Park, J. P. Perroud, D. Rajaram, H. A. Rubin, J. Volk, C. G. White, S. L. White, P. Zyla

*Corresponding author for this work

Research output: Contribution to journalJournal Articlepeer-review

9 Citations (Scopus)

Abstract

The α decay parameter in the process Ω -→ΛK- has been measured from a sample of 4.50 million unpolarized Ω- decays recorded by the HyperCP (E871) experiment at Fermilab and found to be [1.78±0.19(stat)±0.16(syst) ]×10-2. This is the first unambiguous evidence for a nonzero α decay parameter, and hence parity violation, in the Ω -→ΛK- decay.

Original languageEnglish
Pages (from-to)11-17
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume617
Issue number1-2
DOIs
Publication statusPublished - 23 Jun 2005
Externally publishedYes

Keywords

  • Alpha decay parameter
  • Omega-minus decays
  • Parity violation

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