1997/08/26 by A. Anastassov, CLEO Collaboration, A. Anastassov et al +99 · 1 citation
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevlett.80.4127
published as Phys.Rev.Lett.80:4127-4131,1998 · 10 page postscript file, postscript file also available through http://w4.lns.cornell.edu/public/CLNS
arxiv created 1997/08/26 · openalex publication_date 1998/05/11 · arxiv updated 2010/04/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
We have studied semileptonic B meson decays with a p-wave charm meson in the final state using 3.29\ifmmode×\else\texttimes\fi106 BB events collected with the CLEO II detector at the Cornell Electron-Positron Storage Ring. We find a value for the exclusive semileptonic product branching fraction B(B^\ensuremath-\ensuremath→D10\ensuremathℓ^\ensuremath-\ensuremathν_\ensuremathℓ)B(D10\ensuremath→D*+\ensuremathπ^\ensuremath-)\phantom\rule0ex0ex=\phantom\rule0ex0ex(0.373\ifmmode±\else\textpm\fi0.085\ifmmode±\else\textpm\fi0.052\ifmmode±\else\textpm\fi0.024)% and an upper limit for B(B^\ensuremath-\ensuremath→D2*0\ensuremathℓ^\ensuremath-\ensuremathν_\ensuremathℓ)B(D2*0\ensuremath→D*+\ensuremathπ^\ensuremath-)<0.16% (90% C.L.). Furthermore, we present the first measurement of the q2 spectrum for B^\ensuremath-\ensuremath→D10\ensuremathℓ^\ensuremath-\ensuremathν_\ensuremathℓ.