The first and second moments of the hadronic mass-squared distribution in the B meson semileptonic decay to charm, B → X c ℓ ν, were measured. The measurement of <M X 2 - M̄ D 2> and the heavy quark effective theory expression for this moment were used, in conjunction with similar information on the first moment of the photon energy spectrum in B → s λ. As a result, λ and ∧̄ were determined.
|Original language||English (US)|
|Journal||Physical Review Letters|
|State||Published - Dec 17 2001|