ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2006, vol. 96, p. -
Measurement of forward-backward asymmetry and Wilson coefficients in Bâ†'K*l+l-
We report the first measurement of the forward-backward asymmetry and the ratios of Wilson coefficients A9/A7 and A10/A7 in Bâ†' K*â.,"+â.,"-, where â.," represents an electron or a muon. We find evidence for the forward-backward asymmetry with a significance of 3.4Ï. The results are obtained from a data sample containing 386 106â€ â€BBÂ pairs that were collected on the Î¥(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. © 2006 The American Physical Society.