MEASUREMENT OF THE CKM MATRIX ELEMENT |V(UB)| WITH CHARMLESS EXCLUSIVE SEMILEPTONIC B MESON DECAYS AT BABAR
2002
Abstract
We present a preliminary measurement of the branching fraction for B e and of the CKM matrix element |V ub | using approximately 55 million B B meson pairs collected with the BABAR detector. Using isospin relations for several modes we find B(B 0 -e + ) = (3.39 0.44 0.52 0.60) 10 -4
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