Search for Decays ofB0→e+e−,B0→μ+μ−,B0→e±μ∓

2004/08/19 by The BABAR Collaboration, B. Aubert, R. Barate +98 · 1 citation
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.1103/physrevlett.94.221803

published as Phys.Rev.Lett.94:221803,2005 · 7 pages, 7 postscript figues, submitted to Phys. Rev. Lett

arxiv created 2004/08/19 · openalex publication_date 2005/06/08 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04

Abstract

We present a search for the decays B⁰\ensuremath→e⁺e^\ensuremath-, B⁰\ensuremath→\ensuremathμ⁺\ensuremathμ^\ensuremath-, and B⁰\ensuremath→e^\ifmmode±\else\textpm\fi\ensuremathμ^\ensuremath∓ in data collected at the \ensuremathΥ(4S) resonance with the BABAR detector at the SLAC B Factory. Using a data set of 111 fb^\ensuremath-1, we find no evidence for a signal in any of the three channels investigated and set the following branching fraction upper limits at the 90% confidence level: B(B⁰\ensuremath→e⁺e^\ensuremath-)<6.1\ifmmode×\else\texttimes\fi10^\ensuremath-8, B(B⁰\ensuremath→\ensuremathμ⁺\ensuremathμ^\ensuremath-)<8.3\ifmmode×\else\texttimes\fi10^\ensuremath-8, and B(B⁰\ensuremath→e^\ifmmode±\else\textpm\fi\ensuremathμ^\ensuremath∓)<18\ifmmode×\else\texttimes\fi10^\ensuremath-8.

Citations

• Model independent constraints on leptoquarks from rare processes
• Search forB0→l+l−at the Belle detector

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