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.
|Journal||Physical review letters|
|Publication status||Published - Dec 17 2001|
ASJC Scopus subject areas
- Physics and Astronomy(all)