We present a search for the decay of a B0 or B0bar meson to a Kbar K*0(0) or K*0 K0bar final state, using a sample of approximately 232x10^6 B (B) over bar events collected with the BABAR detector at the PEP-II asymmetric energy e(+)e(-) collider at SLAC. The measured branching fraction is B(B0 ->anti-K*0 K0 ) + B(B0 -> K*0 anti-K0) =(0.2_(-0.8-0.3)^(+0.9+0.1))x10^(-6). We obtain the following upper limit for the branching fraction at 90% confidence level: B(B0 ->anti-K*0 K0)+B(B0 -> K*0 anti-K0)< 1.9x10(-6). We use our result to constrain the standard model prediction for the deviation of the CP asymmetry in B0 ->phi K-0 from sin2 beta.

Search for the decay of a B0 or B0bar meson to anti-K*0 K0 or K*0 anti-K0 / B. AUBERT, R. BARATE, M. BONA, D. BOUTIGNY, F. COUDERC, Y. KARYOTAKIS, J.P. LEES, V. POIREAU, V. TISSERAND, A. ZGHICHE, E. GRAUGES, A. PALANO, J.C. CHEN, N.D. QI, G. RONG, P. WANG, Y.S. ZHU, G. EIGEN, I. OFTE, B. STUGU, G.S. ABRAMS, M. BATTAGLIA, D.N. BROWN, J. BUTTON-SHAFER, R.N. CAHN, E. CHARLES, M.S. GILL, Y. GROYSMAN, R.G. JACOBSEN, J.A. KADYK, L.T. KERTH, Y.G. KOLOMENSKY, G. KUKARTSEV, G. LYNCH, L.M. MIR, P.J. ODDONE, T.J. ORIMOTO, M. PRIPSTEIN, N.A. ROE, M.T. RONAN, W.A. WENZEL, P. DEL AMO SANCHEZ, M. BARRETT, K.E. FORD, T.J. HARRISON, A.J. HART, C.M. HAWKES, S.E. MORGAN, A.T. WATSON, K. GOETZEN, T. HELD, H. KOCH, B. LEWANDOWSKI, M. PELIZAEUS, K. PETERS, T. SCHROEDER, M. STEINKE, J.T. BOYD, J.P. BURKE, W.N. COTTINGHAM, D. WALKER, T. CUHADAR-DONSZELMANN, B.G. FULSOM, C. HEARTY, N.S. KNECHT, T.S. MATTISON, J.A. MCKENNA, A. KHAN, P. KYBERD, M. SALEEM, D.J. SHERWOOD, L. TEODORESCU, V.E. BLINOV, A.D. BUKIN, V.P. DRUZHININ, V.B. GOLUBEV, A.P. ONUCHIN, S.I. SEREDNYAKOV, Y.I. SKOVPEN, E.P. SOLODOV, K.Y. TODYSHEV, D.S. BEST, M. BONDIOLI, M. BRUINSMA, M. CHAO, S. CURRY, I. ESCHRICH, D. KIRKBY, A.J. LANKFORD, P. LUND, M. MANDELKERN, R.K. MOMMSEN, W. ROETHEL, D.P. STOKER, S. ABACHI, C. BUCHANAN, S.D. FOULKES, J.W. GARY, O. LONG, B.C. SHEN, K. WANG, L. ZHANG, H.K. HADAVAND, E.J. HILL, H.P. PAAR, S. RAHATLOU, V. SHARMA, J.W. BERRYHILL, C. CAMPAGNARI, A. CUNHA, B. DAHMES, T.M. HONG, D. KOVALSKYI, J.D. RICHMAN, T.W. BECK, A.M. EISNER, C.J. FLACCO, C.A. HEUSCH, J. KROSEBERG, W.S. LOCKMAN, G. NESOM, T. SCHALK, B.A. SCHUMM, A. SEIDEN, P. SPRADLIN, D.C. WILLIAMS, M.G. WILSON, J. ALBERT, E. CHEN, A. DVORETSKII, D.G. HITLIN, I. NARSKY, T. PIATENKO, F.C. PORTER, A. RYD, A. SAMUEL, R. ANDREASSEN, G. MANCINELLI, B.T. MEADOWS, M.D. SOKOLOFF, F. BLANC, P.C. BLOOM, S. CHEN, W.T. FORD, J.F. HIRSCHAUER, A. KREISEL, U. NAUENBERG, A. OLIVAS, W.O. RUDDICK, J.G. SMITH, K.A. ULMER, S.R. WAGNER, J. ZHANG, A. 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Search for the decay of a B0 or B0bar meson to anti-K*0 K0 or K*0 anti-K0

A. LAZZARO;V. LOMBARDO;F. PALOMBO;N. NERI;
2006

Abstract

We present a search for the decay of a B0 or B0bar meson to a Kbar K*0(0) or K*0 K0bar final state, using a sample of approximately 232x10^6 B (B) over bar events collected with the BABAR detector at the PEP-II asymmetric energy e(+)e(-) collider at SLAC. The measured branching fraction is B(B0 ->anti-K*0 K0 ) + B(B0 -> K*0 anti-K0) =(0.2_(-0.8-0.3)^(+0.9+0.1))x10^(-6). We obtain the following upper limit for the branching fraction at 90% confidence level: B(B0 ->anti-K*0 K0)+B(B0 -> K*0 anti-K0)< 1.9x10(-6). We use our result to constrain the standard model prediction for the deviation of the CP asymmetry in B0 ->phi K-0 from sin2 beta.
B mesons ; CP invariance ; electron-positron inclusive interactions ; meson hadronic decay ; standard model
Settore FIS/01 - Fisica Sperimentale
2006
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/22710
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