We report a search for the decays B-0-> Ds-Ds+, B-0-> Ds*-Ds+, and B-0-> Ds*-Ds*+ in a sample of 232x10(6) Upsilon(4S) decays to B (B) over bar pairs collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) storage ring. We find no significant signal and set upper bounds for the branching fractions: B(B-0-> Ds-Ds+)< 1.0x10(-4), B(B-0-> Ds*-Ds+)< 1.3x10(-4), and B(B-0-> Ds*-Ds*+)< 2.4x10(-4) at 90% confidence level. RI Peters, Klaus/C-2728-2008; Patrignani, Claudia/C-5223-2009; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Neri, Nicola/G-3991-2012; Monge, Maria Roberta/G-9127-2012
Search for the W-exchange decays B-0 -> Ds(*)-Ds(*)+
ANGELINI, CARLO;BATIGNANI, GIOVANNI;BETTARINI, STEFANO;CALDERINI, GIOVANNI;FORTI, FRANCESCO;GIORGI, MARCELLO;PAOLONI, EUGENIO;RIZZO, GIULIANA;
2005-01-01
Abstract
We report a search for the decays B-0-> Ds-Ds+, B-0-> Ds*-Ds+, and B-0-> Ds*-Ds*+ in a sample of 232x10(6) Upsilon(4S) decays to B (B) over bar pairs collected with the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) storage ring. We find no significant signal and set upper bounds for the branching fractions: B(B-0-> Ds-Ds+)< 1.0x10(-4), B(B-0-> Ds*-Ds+)< 1.3x10(-4), and B(B-0-> Ds*-Ds*+)< 2.4x10(-4) at 90% confidence level. RI Peters, Klaus/C-2728-2008; Patrignani, Claudia/C-5223-2009; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Neri, Nicola/G-3991-2012; Monge, Maria Roberta/G-9127-2012File in questo prodotto:
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