Measurement of D{sub s}{sup +} and D{sub s}{sup *+} Production in B Meson Decays and from Continuum e{sup +}e{sup -} Annihilations at {radical}s=10.6 GeV.

Abstract

New precise measurements of D{sub s}{sup +} and D*{sub s}{sup +} meson production from B mesons and q{bar q} continuum events near the {Upsilon}(4S) resonance are presented in this paper. Using the BABAR data recorded in 1999 and 2000 of 20.8 fb{sup -1} on-resonance and 2.6 fb{sup -1} off-resonance, we measure the inclusive branching fractions (B {yields} D{sub s}{sup +}) = (10.93 {+-} 0.19 {+-} 0.58 {+-} 2.73)% and (B {yields} D*{sub s}{sup +}) = (7.94 {+-} 0.82 {+-} 0.72 {+-} 1.99)%, where the first error is statistical, the second is the systematic error, and the third is the error due to the D{sub s}{sup +} {yields} {pi}{sup +} branching fraction uncertainty. The branching fractions (B {yields} D{sup (*)}{sub s}{sup +} {bar D}(*)) = (5.07 {+-} 0.09 {+-} 0.34 {+-} 1.27)% and (B {yields} D*{sub s}{sup +} {bar D}(*)) = (4.07 {+-} 0.42 {+-} 0.53 {+-} 1.02)% have been determined from the measured D{sup (*)}{sub s}{sup +} momentum spectra.