We report results from a search for the lepton flavor
violating decays B0(s) --> e+ mu- and B0 --> e- mu-, and the
flavor-changing neutral-current decays B0(s) --> e+ e- and B0 -->
e+ e-. The analysis uses data corresponding to 2 fb-1 of integrated
luminosity of p anti-p collisions at s**(1/2) ñ.96 TeV collected with
the upgraded Collider Detector (CDF II) at the Fermilab Tevatron.
The observed number of B0 and B0(s) candidates is consistent with
background expectations. The resulting Bayesian upper limits on the
branching ratios at 90% credibility level are B(B0(s) --> e+ mu-)
< 2.0 x 10-7, B(B0 --> e+ mu-) < 6.4 x 10-8, B(B0(s) --> e+
e-) < 2.8 x 10-7, and B(B0 --> e+ e-) < 8.3 x 10-8. From the
limits on B(B0_(s) --> e+ mu-), the following lower bounds on the
Patti-Salam leptoquark masses are also derived: M_LQ(B0(s) --> e+
mu-) > 47.8 TeV/c2, and M_LQ(B0 --> e+ mu-) > 59.3 TeV/c3,
at 90% credibility level.
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Updated: Wednesday, 2009 September 16 15:50:54 CDT automatically from input from carol picciolo