Observation of $B0̂_s \to J/\psi K{̂*0}(892)$ and $B0̂_s \to J/\psi K0̂_S$ Decays
| Author | : |
| Publisher | : |
| Total Pages | : |
| Release | : 2011 |
| ISBN-10 | : OCLC:1065026264 |
| ISBN-13 | : |
| Rating | : 4/5 ( Downloads) |
Download or read book Observation of $B0̂_s \to J/\psi K{̂*0}(892)$ and $B0̂_s \to J/\psi K0̂_S$ Decays written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report the first observation of two Cabibbo-suppressed decay modes of the B{sub s}° meson. Using a sample of p{bar p} collisions at √s = 1.96 TeV corresponding to 5.9 fb−1 of integrated luminosity collected with the CDF II detector at the Fermilab Tevatron, they search for new B{sub s}° decay modes in a sample of events containing J/? →??− decays. They reconstruct a B{sub s}° → J/? K*(892)° signal with K*(892)° → K+?−, observing a yield of 151 ± 25 events with a statistical significance of 8.0?. They also reconstruct a B{sub s}° → J/? K{sub S}° signal with K{sub S}° →?+?−, observing a yield of 64 ± 14 events with a statistical significance of 7.2?. From these yields, they extract the branching ratios?(B{sub s}° → J/? K*(892)°) = (8.3 ± 3.8) x 10−5 and?(B{sub s}° → J/? K°) = (3.5 ± 0.8) x 10−5, where statistical, systematic, and fragmentation-fraction uncertainties are included in the combined uncertainty.
