Search for the Rare Decays [Formula presented] and [Formula presented]

Author(s): Aubert, B; Boutigny, D; Gaillard, JM; Hicheur, A; Karyotakis, Y; Lees, JP; Robbe, P; Tisserand, V; Palano, A; Pompili, A; Chen, GP; Chen, JC; Qi, ND; Rong, G; Wang, P; Zhu, YS; Eigen, G; Stugu, B; Abrams, GS; Borgland, AW; Breon, AB; Brown, DN; Button-Shafer, J; Cahn, RN; Clark, AR; Gill, MS; Gritsan, AV; Groysman, Y; Jacobsen, RG; Kadel, RW; Kadyk, J; Kerth, LT; Kolomensky, YG; Kral, JF; LeClerc, C; Levi, ME; Lynch, G; Oddone, PJ; Pripstein, M; Roe, NA; Romosan, A; Ronan, MT; Shelkov, VG; Telnov, AV; Wenzel, WA; Harrison, TJ; Hawkes, CM; Knowles, DJ; O'Neale, SW; Penny, RC; Watson, AT; Watson, NK; Deppermann, T; Goetzen, K; Koch, H; Kunze, M; Lewandowski, B; Peters, K; Schmuecker, H; Steinke, M; Barlow, NR; Bhimji, W; Chevalier, N; Clark, PJ; Cottingham, WN; Foster, B; Mackay, C; Wilson, FF; Abe, K; Hearty, C; Mattison, TS; McKenna, JA; Thiessen, D; Jolly, S; McKemey, AK; Blinov, VE; Bukin, AD; Bukin, DA; Buzykaev, AR; Golubev, VB; Ivanchenko, VN; Korol, AA; Kravchenko, EA; Onuchin, AP; Serednyakov, SI | Abstract: We present results from a search for the flavor-changing neutral current decays [Formula presented] and [Formula presented], where [Formula presented] is either an [Formula presented] or [Formula presented] pair. The data sample comprises [Formula presented] decays collected with the BABAR detector at the PEP-II B Factory. We obtain the [Formula presented] C.L. upper limits [Formula presented] and [Formula presented], close to standard model predictions for these branching fractions. We have also obtained limits on the lepton-family-violating decays [Formula presented] and [Formula presented]. © 2002 The American Physical Society.