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ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2004, vol. 92, p. 131801-1

Observation of B+ → pp̄π+, B0 → pp̄K0, and B+ → pp̄K*+

Wang M. Z., Abe K., Abe T., Adachi I., Aihara H., Asano Y., Aso T., Aulchenko V., Aushev T., Bakich A. M., Bay A., Bizjak I., Bondar A., Bozek A., Bračko M., Browder T. E., Chang M. C., Chang P., Chao Y., Chen K. F., Cheon B. G., Chistov R., Choi S. K., Choi Y., Choi Y. K., Chu P. H., Chuvikov A., Danilov M., Dong L. Y., Drutskoy A., Eidelman S., Eiges V., Fukunaga C., Gabyshev N., Garmash A., Gershon T., Gokhroo G., Golob B., Hara T., Hayashii H., Hazumi M., Hokuue T., Hoshi Y., Hou W. S., Huang H. C., Inami K., Ishikawa A., Itoh R., Iwasaki H., Iwasaki M., Iwasaki Y., Kang J. H., Katayama N., Kawai H., Kawasaki T., Kichimi H., Kim H. J., Kim H., Kim J. H., Kim S. K., Kinoshita K., Koppenburg P., Korpar S., Križan P., Krokovny P., Kuzmin A., Kwon Y. J., Lange J. S., Lee S. H., Lesiak T., Limosani A., Lin S. W., MacNaughton J., Majumder G., Mandl F., Matsumoto T., Mitaroff W., Miyake H., Miyata H., Nagamine T., Nagasaka Y., Nakano E., Nishida S., Nitoh O., Ogawa S., Ohshima T., Okuno S., Olsen S. L., Ostrowicz W., Ozaki H., Pakhlov P., Palka H., Park C. W.

The observation of B+ → pp̄π+, which is dominated by the b→u tree diagram was studied. The observation of B 0 → pp̄K0 and B+→pp̄K *+ was also presented and the mesurement of B +→pp̄K+ was improved. It was found that a search for the B0→pp̄K*0 mode yielded only an upper limit. The pp̄ mass spectra was also studied to see if the threshold peaking confirmed with the newly observed modes.