Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9857564 | Nuclear Physics B - Proceedings Supplements | 2005 | 6 Pages |
Abstract
Based on 144 million polarized ÎââÎÏâ, ÎâpÏâ and 5.5 million unpolarized ΩââÎKâ, ÎâpÏâ decays, the HyperCP collaboration at Fermilab has measured the decay parameters βÎâ, γÎâ, and αΩâ. Our results indicate that βÎâ and αΩâ are small, but nonzero. Implications of the βÎâ measurement on the ÎÏâ phase-shift difference will be discussed. The nonzero value of αΩâ is the first unambiguous evidence of parity violation in Ωâ decays. A preliminary measurement of αΩ¯+ will also be presented, based on 1.9 million Ω¯+âίK+, ίâp¯Ï+ events. The comparison of αΩâ and αΩ¯+ provides a test of CP invariance for Ω decays.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
L.C. Lu,