A unified, flavor symmetric explanation for the t-tbar asymmetry and Wjj excess at CDF

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

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minor changes to text, references added, version to be published in PRD

Scientific paper

10.1103/PhysRevD.84.094007

We present a simple, perturbative, and renormalizable model with a flavor symmetry which can explain both the t-tbar forward-backward asymmetry and the bump feature present in the dijet mass distribution of the W+jj sample in the range 120-160 GeV that was recently reported by the CDF collaboration. The flavor symmetry not only ensures the flavor/CP safety of the model, but also relates the two anomalies unambiguously. It predicts a comparable forward-backward asymmetry in c-cbar. The forward-backward asymmetry in b-bar is, however, small. A bump in the dijet mass distribution in Z+jj sample is also predicted but with a suppressed cross-section.

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