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 $B^+$ Meson Decays to $a_1^+(1260) K^0$ and $B^0 \to a_1^-(1260) K

Ist Teil von

• Physical review letters, 2008, Vol.100

Ort / Verlag

American Physical Society

Erscheinungsjahr

2008

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• We present branching fraction measurements of the decays B^{+} -> a1(1260)^{+} K^{0} and B^{0} to a1(1260)^{-} K^{+} with a1(1260)^{+} -> pi^{-} pi^{+} pi^{+}. The data sample corresponds to 383 million B B-bar pairs produced in e^{+}e^{-} annihilation through the Y(4S) resonance. We measure the products of the branching fractions: B(B^{+}-> a1(1260)^{+} K^{0})B(a1(1260)^{+} -> pi^{-} pi^{+} pi^{+}) = (17.4 +/- 2.5 +/- 2.2) 10^{-6} B(B^{0}-> a1(1260)^{-} K^{+})B(a1(1260)^{-} -> pi^{+} pi^{-} pi^{-}) = (8.2 +/- 1.5 +/- 1.2) 10^{-6}. We also measure the charge asymmetries A_{ch}(B^{+} -> a1(1260)^{+} K^{0})= 0.12 +/- 0.11 +/- 0.02 and A_{ch}(B^{0} -> a1(1260)^{-} K^{+})= -0.16 +/- 0.12 +/- 0.01. The first uncertainty quoted is statistical and the second is systematic.