Details

Autor(en) / Beteiligte

• Aubert, B.
• Bona, M.
• Boutigny, D.
• Karyotakis, Y.
• Lees, J.P.
• Poireau, V.
• Prudent, X.
• Tisserand, V.
• Zghiche, A.
• Garra Tico, J.
• Grauges, E.
• Lopez, L.
• Palano, A.
• Pappagallo, M.
• Eigen, G.
• Stugu, B.
• Sun, L.
• S. Abrams, G.
• Battaglia, M.
• N. Brown, D.
• Button-Shafer, J.
• N. Cahn, R.
• Groysman, Y.
• G. Jacobsen, R.
• A. Kadyk, J.
• T. Kerth, L.
• G. Kolomensky, Yu
• Kukartsev, G.
• Lopes Pegna, D.
• Lynch, G.
• M. Mir, L.
• J. Orimoto, T.
• L. Osipenkov, I.
• T. Ronan, M.
• Tackmann, K.
• Tanabe, T.
• Wenzel, W.A.
• del Amo Sanchez, P.
• M. Hawkes, C.
• T. Watson, A.
• Koch, H.
• Schroeder, T.
• Walker, D.
• J. Asgeirsson, D.
• Cuhadar-Donszelmann, T.
• G. Fulsom, B.
• Hearty, C.
• S. Mattison, T.
• A. Mckenna, J.
• Barrett, M.
• Khan, A.
• Saleem, M.
• Teodorescu, L.
• E. Blinov, V.
• D. Bukin, A.
• P. Druzhinin, V.
• B. Golubev, V.
• P. Onuchin, A.
• I. Serednyakov, S.
• I. Skovpen, Yu
• P. Solodov, E.
• Yu. Todyshev, K.
• Bondioli, M.
• Curry, S.
• Eschrich, I.
• Kirkby, D.
• J. Lankford, A.
• Lund, P.
• Mandelkern, M.
• C. Martin, E.
• P. Stoker, D.
• Abachi, S.
• Buchanan, C.
• D. Foulkes, S.
• W. Gary, J.
• Liu, F.
• Long, O.
• C. Shen, B.
• M. Vitug, G.
• Zhang, L.
• P. Paar, H.
• Rahatlou, S.
• Sharma, V.
• W. Berryhill, J.
• Campagnari, C.
• Cunha, A.
• Dahmes, B.
• M. Hong, T.
• Kovalskyi, D.
• D. Richman, J.
• W. Beck, T.
• M. Eisner, A.
• J. Flacco, C.
• Heusch, C.A.
• Kroseberg, J.
• S. Lockman, W.
• Schalk, T.
• A. Schumm, B.
• Seiden, A.
• G. Wilson, M.

Titel

Observation of $B^0 \to K^{0} \bar{K}^{0}$ and search for $B^0 \to K^{0}K^{0}

Ist Teil von

• Physical review letters, 2008, Vol.100

Ort / Verlag

American Physical Society

Erscheinungsjahr

2008

Link zum Volltext

Quelle

American Physical Society

Beschreibungen/Notizen

• We report the observation of the b -> d penguin-dominated decay B0 -> K*0 K*0bar with a sample of 383.2 +/- 4.2 million BBbar pairs collected with the BaBar detector at the PEP-II asymmetric-energy e^+e^- collider at the Stanford Linear Accelerator Center. The measured branching fraction is Br(B0 -> K*0 K*0bar) = [0.49^{+0.16}_{-0.13} +/- 0.05] x 10^{-6} and the fraction of longitudinal polarization f_L (B0 -> K*0 K*0bar) = 0.81^{+0.10}_{-0.12} +/- 0.06. The first error quoted is statistical and the second systematic. We also obtain an upper limit at the 90% confidence level on the branching fraction for Br(B0 ->K*0 K*0) < 0.18 x 10^{-6}.