Chiral and heavy quark symmetry violation in B decays
Abstract
The most general lagrangian consistent with chiral, heavy quark, and strong interaction symmetries to order {1}/{M} and to linear order in the SU(3) vector and axial currents is presented. Two new dimensionful and five dimensionless couplings arise at this order. The heavy to light flavor changing current is derived to the same order, giving rise to two additional dimensionful constants and six dimensionless ones. The dimensionless parameters are shown to be irrelevant at O( {1}/{M}) . Analytic SU(3) counterterms are also considered. Form factors for D → πℓ ν and overlineB → πℓ overlineν are computed at O( {1}/{M}, m _{s}^{0}) and O( M^{0}, m_{s}^{1}). The eight decay constants f _{D} f _{Ds} f _{D∗} f _{Ds∗}, f _{B} f _{Bs} f _{B∗}and f _{Bs∗}, are computed at O( {1}/{M}, m _{s}) in terms of seven parameters which can be determined by { overlineB, D} → { overlineK π}ℓ overlinev decays, and two undetermined counterterms. The ratio R_{1} = ( f_{B s}/ f_{B})/( f_{D s}/ f_{D}) is expressed in terms of four parameters.
 Publication:

Nuclear Physics B
 Pub Date:
 February 1995
 DOI:
 10.1016/S05503213(95)000054
 arXiv:
 arXiv:hepph/9402340
 Bibcode:
 1995NuPhB.442..205B
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 22 pages, harvmac, 5 eps figs, resubmitted for automated postscript