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ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2001, vol. 86, p. 2509-2514

Measurement of the CP violation parameter sin2ø 1 in B d 0 meson decays

Abashian A., Abe K., Abe K., Adachi I., Ahn Byoung Sup, Aihara H., Akatsu M., Alimonti G., Aoki K., Asai K., Asai M., Asano Y., Aso T., Aulchenko V., Aushev T., Bakich A. M., Banas E., Behari S., Behera P. K., Beiline D., Bondar A., Bozek A., Browder T. E., Casey B. C K, Chang P., Chao Y., Cheon B. G., Choi S. K., Choi Y., Doi Y., Dragic J., Drutskoy A., Eidelman S., Enari Y., Enomoto R., Everton C. W., Fang F., Fujii H., Fujimoto K., Fujita Y., Fukunaga C., Fukushima M., Garmash A., Gordon A., Gotow K., Guler H., Guo R., Haba J., Haji T., Hamasaki H., Hanagaki K., Handa F., Hara K., Hara T., Haruyama T., Hastings N. C., Hayashi K., Hayashii H., Hazumi M., Heenan E. M., Higashi Y., Higashino Y., Higuchi I., Higuchi T., Hirai T., Hirano H., Hirose M., Hojo T., Hoshi Y., Hoshina K., Hou W. S., Hsu S. C., Huang H. C., Huang Y. C., Ichizawa S., Igarashi Y., Iijima T., Ikeda H., Ikeda K., Inami K., Inoue Y., Ishikawa A., Ishino H., Itoh R., Iwai G., Iwai M., Iwamoto M., Iwasaki H., Iwasaki Y., Jackson D. J., Jalocha P., Jang H. K., Jones M., Kagan R., Kakuno H., Kaneko J., Kang J. H., Kang J. S.

The violation parameter sin2ø 1 of the standard model CP was measured using B d 0-B̄ d 0 meson pairs produced at the Y(4S) resonance. The accompanying B meson was identified from its charged particle decay products. It was shown that the CP violation manifests itself as an asymmetry A(Δ t).