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.

Search for the W-exchange decays B-0 -> Ds(*)-Ds(*)+

FERRONI, Fernando
2005

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.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12571/2480
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