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Search for the Decay B0 --> rho0rho0

B. Aubert·BABAR Collaboration
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Abstract

The B --> rho0 rho0 decay mode is searched for in a data sample of about 227 million Upsilon(4S) --> B Bbar decays collected with the BABAR detector at the PEP-II asymmetric B factory at SLAC. No significant signal is observed, and an upper limit of 1.1 x 10e-6 (90% C.L.) on the branching fraction is set. Implications on the penguin contribution and constraints on the CKM angle alpha with B --> rho rho decays are discussed. All results are preliminary.

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B. Aubert, BABAR Collaboration. 2004-08-14. Search for the Decay B0 --> rho0rho0. https://arxiv.org/abs/hep-ex/0408061

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