This article reports world averages for measurements on b-hadron properties obtained by the Heavy Flavor Averaging Group (HFAG) using the available results as of summer 2004 conferences. In the averaging, the input parameters used in the various analyses are adjusted (rescaled) to common values, and all known correlations are taken into account. The… (More)
We report the first observation of the decay B + → χ c0 K + using 21.3 fb −1 of data collected by the Belle detector at the Υ(4S) resonance. The preliminary result for the branching fraction is B(B + → χ c0 K +) = (8.0 +2.7 −2.4 ± 1.0 ± 1.1) × 10 −4 where the first error is statistical, the second is systematic, and the third comes from the uncertainty in… (More)
Data from high-energy physics (HEP) experiments are collected with significant financial and human effort and are mostly unique. An inter-experimental study group on HEP data preservation and long-term analysis was convened as a panel of the International Committee for Future Accelerators (ICFA). The group was formed by large collider-based experiments and… (More)
We review recent experimental results on hadronic decays and lifetimes of hadrons containing b and c quarks. 1 We discuss charm counting and the semileptonic branching fraction in B decays, the color suppressed amplitude in B and D decay, and the search for gluonic penguins in B decay. 1 Charm counting and the semileptonic branching fraction 1.1 The… (More)
I review results related to the CKM angle φ 1 (β). These results include recent measurements of CP-violation from the BaBar and Belle experiments in b → c¯ cs, b → c¯ cd and b → sq ¯ q processes.
We have observed four new decay modes of the charmed baryon + c using data collected with the CLEO II detector. Three decay modes, + c ! p K 0 , + , and + , are rst observations of nal states with an meson, while the fourth mode, + c ! K 0 K + , requires an s s quark pair to be popped out of the vacuum. The branching ratios relative to + c ! pK ? + are… (More)
We present a measurement of the standard model CP violation parameter sin2 phi(1) based on a 29.1 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One neutral B meson is fully reconstructed as a J/psi K(S), psi(2S)K(S), chi(c1)K(S), eta(c)K(S), J/psi K(L), or J/psi K(*0) decay… (More)
This report presents the results of studies that investigate the physics reach at a Super B factory, an asymmetric-energy e + e − collider with a design luminosity of 5 × 10 35 cm −2 s −1 , which is around 40 times as large as the peak luminosity achieved by the KEKB collider. The studies focus on flavor physics and CP violation measurements that could be… (More)