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Measurement of the Decay B-s(0) -> D-s(-)pi(+) and Evidence for B-s(0) -> (DsK +/-)-K--/+ in e(+) e(-) Annihilation at root s approximate to 10.87 GeV
- Authors
- Louvot, R.; Wicht, J.; Schneider, O.; Adachi, I.; Aihara, H.; Arinstein, K.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Balagura, V.; Bay, A.; Bhardwaj, V.; Bitenc, U.; Bondar, A.; Bozek, A.; Bracko, M.; Browder, T. E.; Chen, A.; Cheon, B. G.; Chistov, R.; Cho, I. -S.; Choi, Y.; Dalseno, J.; Danilov, M.; Dash, M.; Drutskoy, A.; Dungel, W.; Eidelman, S.; Gabyshev, N.; Goldenzweig, P.; Golob, B.; Ha, H.; Haba, J.; Hayasaka, K.; Hayashii, H.; Hazumi, M.; Hoshi, Y.; Hou, W. -S.; Hyun, H. J.; Iijima, T.; Inami, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, M.; Joshi, N. J.; Kah, D. H.; Kang, J. H.; Katayama, N.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kim, S. K.; Kim, Y. I.; Kim, Y. J.; Kinoshita, K.; Korpar, S.; Krizan, P.; Krokovny, P.; Kumar, R.; Kuzmin, A.; Kwon, Y. -J.; Kyeong, S. -H.; Lange, J. S.; Lee, J. S.; Lee, M. J.; Lee, S. E.; Lesiak, T.; Li, J.; Limosani, A.; Lin, S. -W.; Liventsev, D.; Mandl, F.; Matyja, A.; McOnie, S.; Medvedeva, T.; Miyabayashi, K.; Miyake, H.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Mori, T.; Nakano, E.; Nakao, M.; Nishida, S.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Ozaki, H.; Pakhlova, G.; Park, C. W.; Park, H. K.; Pestotnik, R.; Piilonen, L. E.; Sahoo, H.; Sakai, Y.; Schumann, J.; Schwartz, A. J.; Sekiya, A.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shiu, J. -G.; Singh, J. B.; Somov, A.; Stanic, S.; Staric, M.; Sumisawa, K.; Sumiyoshi, T.; Tanaka, M.; Taylor, G. N.; Teramoto, Y.; Tikhomirov, I.; Trabelsi, K.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Usov, Y.; Varner, G.; Vervink, K.; Wang, C. C.; Wang, C. H.; Wang, P.; Wang, X. L.; Watanabe, Y.; Wedd, R.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Yamauchi, M.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zivko, T.; Zupanc, A.; Zwahlen, N.; Zyukova, O.
- Issue Date
- Jan-2009
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.102, no.2, pp.1 - 6
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 102
- Number
- 2
- Start Page
- 1
- End Page
- 6
- ISSN
- 0031-9007
- Abstract
- We have studied B-s(0) -> D-s(-)pi(+) and B-s(0) -> (DsK +/-)-K--/+ decays using 23.6 fb(-1) of data collected at the Y(5S) resonance with the Belle detector at the KEKB e(+) e(-) collider. This highly pure B-s(0) -> D-s(-)pi(+) sample is used to measure the branching fraction, B(B-s(0) -> D-s(-)pi(+)) = [3.67(-0.33)(+0.35)(stat)(-0.42)(+0.43)(syst) +/- 0.49(f(s))] x 10(-3) (f(s) = N-Bs(*)(B) over bars(*)/N-b (b) over bar and the fractions of B-s(0) event types at the Y(d5S) energy, in particular N-Bs(*)(B) over bars(*)/N-Bs(*)(B) over bars(*) = (90.1(-4.0)(+3.8) +/- 0.2)%. We also determine the masses M(B-s(0)) = (5364.4 +/- 1.3 +/- 0.7) MeV/c(2) and M(B-s*) = (5416.4 +/- 0.4 +/- 0.5) MeV/c(2). In addition, we observe B-s(0) -> (DsK +/-)-K--/+ decays with a significance of 3.5 sigma and measure B(B-s(0) -> (DsK +/-)-K--/+) = [2.4-1.0+1.2(stat) +/- 0.3(syst) +/- 0.3(f(s))] x 10(-4).
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Related Researcher
- Cheon, Byung Gu
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF PHYSICS)