Estimates for Forward-backward Asymmetry in B→ K ∗ (892) l + l −
Abstract
Forward-backward charge asymmetry in rare dilepton
B
-decays is formulated with the assumption of an on-shell b-quark. We find the asymmetry is expressed in terms of two spatially transverse helicity amplitudes, which are determined by combining the data of
D→
K
∗
(892)
l
+
ν
with heavy flavour symmetry. We estimate the charge asymmetry of
B→
K
∗
(892)
l
+
l
−
for large energy leptons against various top masses in the standard model.