Observation of the doubly cabibbo-suppressed decay Ds+→K+K+π-

B. R. Ko, E. Won, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, A. Chen, B. G. Cheon, I. S. Cho, Y. Choi, A. Drutskoy, W. Dungel, S. EidelmanN. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, J. Haba, B. Y. Han, K. Hayasaka, H. Hayashii, Y. Hoshi, W. S. Hou, H. J. Hyun, R. Itoh, M. Iwasaki, D. H. Kah, J. H. Kang, P. Kapusta, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krokovny, A. Kuzmin, Y. J. Kwon, S. H. Kyeong, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, C. Liu, Y. Liu, D. Liventsev, R. Louvot, J. MacNaughton, F. Mandl, S. McOnie, T. Medvedeva, H. Miyata, Y. Miyazaki, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, H. K. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, K. Sakai, Y. Sakai, O. Schneider, C. Schwanda, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. G. Shiu, B. Shwartz, S. Stanič, M. Starič, T. Sumiyoshi, M. Tanaka, G. N. Taylor, Y. Teramoto, K. Trebelsi, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, G. Varner, K. E. Varvell, K. Vervink, C. C. Wang, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, B. D. Yabsley, Y. Yamashita, Z. P. Zhang, V. Zhilich, T. Zivko, A. Zupanc, O. Zyukova

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Abstract

We report the first observation of the doubly Cabibbo-suppressed decay Ds+→K+K+π- using 605fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The branching ratio with respect to its Cabibbo-favored counterpart B(Ds+→K+K+π-)/B(Ds+→K+K-π+) is (0.229±0.028±0.012)%, where the first uncertainty is statistical and the second is systematic. We also report a significantly improved measurement of the doubly Cabibbo-suppressed decay D+→K+π+π-, with a branching ratio B(D+→K+π+π-)/B(D+→K-π+π+)=(0.569±0. 018±0.014)%.

Original languageEnglish
Article number221802
JournalPhysical review letters
Volume102
Issue number22
DOIs
Publication statusPublished - 2009 Jun 5

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Ko, B. R., Won, E., Aihara, H., Arinstein, K., Aushev, T., Bakich, A. M., Balagura, V., Barberio, E., Bondar, A., Bozek, A., Bračko, M., Brodzicka, J., Browder, T. E., Chen, A., Cheon, B. G., Cho, I. S., Choi, Y., Drutskoy, A., Dungel, W., ... Zyukova, O. (2009). Observation of the doubly cabibbo-suppressed decay Ds+→K+K+π-. Physical review letters, 102(22), [221802]. https://doi.org/10.1103/PhysRevLett.102.221802