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ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2008, vol. 101, p. -

Search for B+→D*+π0 decay

Iwabuchi M., Nakao M., Adachi I., Arinstein K., Aulchenko V., Aushev T., Bakich A. M., Balagura V., Barberio E., Bay A., Belous K., Bhardwaj V., Bitenc U., Bozek A., Bračko M., Browder T. E., Chen A., Chen W. T., Cheon B. G., Cho I. S., Choi Y., Dalseno J., Dash M., Drutskoy A., Eidelman S., Fujikawa M., Gabyshev N., Ha H., Haba J., Hayasaka K., Hazumi M., Heffernan D., Horii Y., Hoshi Y., Hou W. S., Hyun H. J., Inami K., Ishikawa A., Ishino H., Itoh R., Iwasaki M., Kah D. H., Kaji H., Kang J. H., Kawai H., Kawasaki T., Kichimi H., Kim H. J., Kim H. O., Kim Y. I., Kim Y. J., Kinoshita K., Korpar S., Križan P., Krokovny P., Kumar R., Kuo C. C., Kwon Y. J., Lee J. S., Lee M. J., Lee S. E., Lesiak T., Limosani A., Lin S. W., Liu C., Liu Y., Liventsev D., Mandl F., Matyja A., McOnie S., Medvedeva T., Miyabayashi K., Miyake H., Miyata H., Miyazaki Y., Moloney G. R., Nakazawa H., Natkaniec Z., Nishida S., Nitoh O., Ogawa S., Ohshima T., Okuno S., Ozaki H., Pakhlov P., Pakhlova G., Park C. W., Park H. K., Park K. S., Peak L. S., Pestotnik R., Piilonen L. E., Sahoo H., Sakai Y., Schneider O., Schümann J.

We report on a search for the doubly Cabibbo suppressed decay B+→D*+π0, based on a data sample of 657×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We find no significant signal and set an upper limit of B(B+→D*+π0)<3.6×10-6 at the 90% confidence level. This limit can be used to constrain the ratio between suppressed and favored B→D*π decay amplitudes, r<0.051, at the 90% confidence level. © 2008 The American Physical Society.