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

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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