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ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2006, vol. 96, p. -

Measurement of forward-backward asymmetry and Wilson coefficients in Bâ†'K*l+l-

Ishikawa A., Abe K., Adachi I., Aihara H., Anipko D., Asano Y., Aushev T., Bakich A. M., Balagura V., Barbero M., Bitenc U., Bizjak I., Blyth S., Bondar A., Bozek A., Bračko M., Browder T. E., Chang P., Chao Y., Chen A., Cheon B. G., Choi Y., Choi Y. K., Chuvikov A., Dalseno J., Danilov M., Dash M., Drutskoy A., Eidelman S., Fratina S., Gabyshev N., Gershon T., Gokhroo G., Golob B., Gorišek A., Ha H., Haba J., Hara T., Hayasaka K., Hayashii H., Hazumi M., Hinz L., Hokuue T., Hoshi Y., Hou S., Hou W. S., Hsiung Y. B., Iijima T., Ikado K., Inami K., Ishino H., Itoh R., Iwasaki M., Iwasaki Y., Kang J. H., Kataoka S. U., Katayama N., Kawai H., Kawasaki T., Khan H. R., Kichimi H., Kim S. K., Kim S. M., Kinoshita K., Korpar S., Križan P., Kulasiri R., Kumar R., Kuo C. C., Kwon Y. J., Lee J., Lee S. E., Lesiak T., Li J., Limosani A., Lin S. W., Liventsev D., Majumder G., Mandl F., Matsumoto T., Matyja A., McOnie S., Mitaroff W., Miyabayashi K., Miyake H., Miyata H., Miyazaki Y., Mizuk R., Moloney G. R., Nagamine T., Nakano E., Nakao M., Natkaniec Z., Nishida S., Nitoh O.

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 386 106†â€BB 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.