Evidence for the Rare Decay, B--] J/psi Eta K.
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Author | : |
Publisher | : |
Total Pages | : 14 |
Release | : 2003 |
ISBN-10 | : OCLC:871366292 |
ISBN-13 | : |
Rating | : 4/5 (92 Downloads) |
Book Synopsis Evidence for the Rare Decay, B--] J/psi Eta K. by :
Book excerpt: We report evidence for the B meson decays, B{sup ±} 2!J/[psi][eta]K{sup ±} and B° 2!J/[psi][eta]K{sub S}°, using 90 million B{bar B} events collected at the [Upsilon](4S) resonance with the BABAR detector at the PEP-II ee− asymmetric-energy storage ring. We obtain preliminary branching fractions in the charged and neutral channels of (10.8 ± 2.3(stat.) ± 2.4(syst.)) x 10−5 and (8.4 {+-} 2.6(stat.) {+-} 2.7(syst.)) x 10−5, respectively.