M. Beneke

Bc meson lifetime.

We investigate the total inclusive decay rate of the (ground state) {ital B}{sub {ital c}} meson within the framework of an operator product expansion in inverse powers of the heavy quark masses and subsequent matching onto nonrelativistic QCD. The expansion is organized as a series in the strong coupling and in powers of the heavy quark velocities in the {ital B}{sub {ital c}}, reflecting the nonrelativistic nature of a heavy-heavy bound state. In this aspect the character of the expansion differs from the more familiar case of heavy-light mesons. The framework incorporates systematically corrections to the leading {ital b}- and {ital c}-quark decays due to binding effects, as well as contributions from weak annihilation and Pauli interference. Based on this approach we find for the {ital B}{sub {ital c}} meson lifetime {tau}{sub {ital B}{sub {ital c}}}=(0.4{endash}0.7) ps, the dominant mechanism being the decay of the charm constituent. {copyright} {ital 1996 The American Physical Society.}We investigate the total inclusive decay rate of the (ground state)

Mixing-induced CP asymmetries in inclusive B decays

{\mathit{B}}_{\mathit{c}}

{ital B}{sub {ital c}} meson lifetime

meson within the framework of an operator product expansion in inverse powers of the heavy quark masses and subsequent matching onto nonrelativistic QCD. The expansion is organized as a series in the strong coupling and in powers of the heavy quark velocities in the

Width difference in the Bs-B-bars system.

{\mathit{B}}_{\mathit{c}}

Hadroproduction of quarkonium in fixed-target experiments.

, reflecting the nonrelativistic nature of a heavy-heavy bound state. In this aspect the character of the expansion differs from the more familiar case of heavy-light mesons. The framework incorporates systematically corrections to the leading b- and c-quark decays due to binding effects, as well as contributions from weak annihilation and Pauli interference. Based on this approach we find for the

Width Difference in the

{\mathit{B}}_{\mathit{c}}

B_s-\bar{B_s}

meson lifetime

System

{\mathrm{\ensuremath{\tau}}}_{{\mathit{B}}_{\mathit{c}}}

Erratum: Width difference in the B s − B ¯ s system [Phys. Rev. D 54 , 4419 (1996)]

=(0.4\char21{}0.7) ps, the dominant mechanism being the decay of the charm constituent. \textcopyright{} 1996 The American Physical Society.

A precise determination of a using B 0 ? ? + ? - and B + ? K * 0 ? +

Abstract We consider CP violating asymmetries that are induced by particle-antiparticle mixing in inclusive channels of neutral B meson decay. Not only are the branching ratios sizable, at the 1% to 50% level, but some of those asymmetries are expected to be large because of substantial CKM phases. The inclusive sum partially dilutes the asymmetries, but the dilution factor is calculable. Assuming local quark-hadron duality, the CKM parameters can be extracted. We discuss in detail the determination of sin 2α from charmless final states in decays of Bd mesons and survey the asymmetries for other inclusive final states. The total inclusive time-dependent asymmetry, where all modes of a weakly decaying neutral meson are summed over, is non-vanishing in general and measures Im ( Γ 12 M 12 ) . While probably not yet sensitive to standard model predictions, meaningful CP violation studies can be conducted with existing data samples of inclusive neutral B decays.