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ISSN - 15507998, Physical Review D - Particles, Fields, Gravitation and Cosmology, 2016, vol. 93, 3, p. -

Search for B0 →π-τ+ντ with hadronic tagging at Belle

Hamer P., Frey A., Abdesselam A., Adachi I., Aihara H., Al Said S., Arinstein K., Asner D. M., Aushev T., Ayad R., Babu V., Badhrees I., Bakich A. M., Barberio E., Bhuyan B., Biswal J., Bozek A., Bračko M., Browder T. E., Červenkov D., Chekelian V., Chen A., Cheon B. G., Chilikin K., Cho K., Chobanova V., Choi Y., Cinabro D., Dalseno J., Danilov M., Danko I., Dash N., Dingfelder J., DoleŽal Z., Drásal Z., Drutskoy A., Dutta D., Eidelman S., Farhat H., Fast J. E., Ferber T., Fulsom B. G., Gaur V., Gabyshev N., Garmash A., Getzkow D., Gillard R., Glattauer R., Goh Y. M., Goldenzweig P., Golob B., Greenwald D., Haba J., Hara T., Hasenbusch J., Hayasaka K., Hayashii H., Hou W. S., Iijima T., Inami K., Inguglia G., Ishikawa A., Itoh R., Iwasaki Y., Jaegle I., Jeon H. B., Joffe D., Joo K. K., Julius T., Kang K. H., Kato E., Kawasaki T., Kiesling C., Kim D. Y., Kim J. B., Kim J. H., Kim K. T., Kim M. J., Kim S. H., Kim Y. J., Kinoshita K., Kodyš P., Korpar S., KriŽan P.

© 2016 American Physical Society.We search for the process B0→π-τ+ντ using the full Belle data set of 711 fb-1, corresponding to 772×106BB¯ pairs, collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We reconstruct one B meson in a hadronic decay and search for the B0→π-τ+ντ process in the remainder of the event. No significant signal is observed and an upper limit of B(B0→π-τ+ντ)<2.5×10-4 is obtained at the 90% confidence level.