Models of Maximal Flavor Violation (MxFV) in elementary
particle physics may contain a least one new scalar SU(2) doublet
field Phi_FV (eta0, eta+) that couples the first and third generation
quarks (q_1, q_3) via a Lagrangian term L_FV ÿi_13 Phi_FV q_1 q_3.
These models have a distinctive signature of same-charge top-quark
pairs and evade flavor-changing limits from meson mixing measurements.
Data corresponding to 2 fb-1 collected by the CDF II detector in p
anti-p collisions at s**(1/2) 1.96 TeV are analyzed for evidence of the
MxFV signature. For a neutral scalar eta0 with m_eta0 ò00 GeV/c2 and
coupling Phi_13 ñ_1 ~ 11 signal events are expected over a background of
2.1 +/- 1.8 events. Three events are observed in the data, consistent
with background expectations, and limits are set on the coupling Phi_13
for m_eta0 ñ80 - 300 GeV/c2.
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Updated: Wednesday, 2009 January 28 10:52:55 CST automatically from input from carol picciolo