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ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2005, vol. 94, p. -

Measurement of polarization and triple-product correlations in B→K* decays

Chen K. F., Abe K., Abe K., Aihara H., Asano Y., Aulchenko V., Aushev T., Bahinipati S., Bakich A. M., Bedny I., Bitenc U., Bizjak I., Blyth S., Bondar A., Bozek A., Bračko M., Brodzicka J., Browder T. E., Chang M. C., Chang P., Chao Y., Chen A., Chen W. T., Cheon B. G., Chistov R., Choi S. K., Choi Y., Chuvikov A., Dalseno J., Danilov M., Dash M., Drutskoy A., Eidelman S., Enari Y., Fang F., Fratina S., Gabyshev N., Garmash A., Gershon T., Gokhroo G., Golob B., Gorišek A., Haba J., Hastings N. C., Hayasaka K., Hayashii H., Hazumi M., Hinz L., Hokuue T., Hoshi Y., Hou S., Hou W. S., Hsiung Y. B., Iijima T., Imoto A., Inami K., Ishikawa A., Ishino H., Itoh R., Iwasaki M., Iwasaki Y., Kang J. H., Kang J. S., Kapusta P., Katayama N., Kawai H., Kawasaki T., Khan H. R., Kichimi H., Kim H. J., Kim S. K., Kim S. M., Kinoshita K., Korpar S., Križan P., Krokovny P., Kumar S., Kuo C. C., Kuzmin A., Kwon Y. J., Lange J. S., Leder G., Lee S. E., Lee Y. J., Lesiak T., Li J., Lin S. W., Liventsev D., MacNaughton J., Mandl F., Matsumoto T., Matyja A., Mikami Y., Mitaroff W., Miyabayashi K.

We present measurements of decay amplitudes and triple-product correlations in B→K* decays based on 253fb-1 of data recorded at the Υ(4S) resonance with the Belle detector at the KEKB e+e- storage ring. The decay amplitudes for the three different helicity states are determined from the angular distributions of final-state particles. The longitudinal polarization amplitudes are found to be 0.45±0.05±0.02 for B0→K*0 and 0.52±0.08±0.03 for B+→K*+ decays. CP- and T-odd CP-violating triple-product asymmetries are measured to be consistent with zero. © 2005 The American Physical Society.