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arXiv · 1104.2030

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

Ann E. Nelson·Takemichi Okui·Tuhin S. Roy
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Abstract

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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Ann E. Nelson, Takemichi Okui, Tuhin S. Roy. 2011-04-11. A unified, flavor symmetric explanation for the t-tbar asymmetry and Wjj excess at CDF. https://doi.org/10.1103/physrevd.84.094007

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