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

  • Louvot, R.
  • Wicht, J.
  • Schneider, O.
  • Adachi, I.
  • Aihara, H.
  • ... Cheon, B. G.
  • 외 133명
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초록

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).

키워드

PHYSICS
제목
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
저자
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.
DOI
10.1103/PhysRevLett.102.021801
발행일
2009-01
유형
Article
저널명
Physical Review Letters
102
2
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