We present a search for the decays B(0)-> e(+)e(-), B(0)->mu(+)mu(-), and B(0)-> e(+/-)mu(-/+) using data collected with the BABAR detector at the PEP-II e(+)e(-) collider at SLAC. Using a data set corresponding to 384x10(6) B (B) over bar pairs, we do not find evidence of any of the three decay modes. We obtain upper limit on the branching fractions, at 90% confidence level, of B(B(0)-> e(+)e(-))< 11.3x10(-8), B(B(0)->mu(+)mu(-))< 5.2x10(-8), and B(B(0)-> e(+/-)mu(-/+))< 9.2x10(-8).
Search for decays of B(0) mesons into e(+)e(-), mu(+)mu(-) and e(+/-)mu(-/+) final states RID C-5223-2009 RID C-5719-2008 RID D-1055-2009
CALDERINI, GIOVANNI;ANGELINI, CARLO;BATIGNANI, GIOVANNI;BETTARINI, STEFANO;FORTI, FRANCESCO;GIORGI, MARCELLO;PAOLONI, EUGENIO;RIZZO, GIULIANA;
2008-01-01
Abstract
We present a search for the decays B(0)-> e(+)e(-), B(0)->mu(+)mu(-), and B(0)-> e(+/-)mu(-/+) using data collected with the BABAR detector at the PEP-II e(+)e(-) collider at SLAC. Using a data set corresponding to 384x10(6) B (B) over bar pairs, we do not find evidence of any of the three decay modes. We obtain upper limit on the branching fractions, at 90% confidence level, of B(B(0)-> e(+)e(-))< 11.3x10(-8), B(B(0)->mu(+)mu(-))< 5.2x10(-8), and B(B(0)-> e(+/-)mu(-/+))< 9.2x10(-8).File in questo prodotto:
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