A Scalar Doublet at the Tevatron?

TL;DR

This paper proposes a simple model involving a new scalar doublet to explain the W+dijet excess observed by CDF, without requiring additional symmetries or complex new particles.

Contribution

It introduces a minimal scalar doublet model that accounts for the excess and discusses potential experimental tests and comparisons to other theories.

Findings

The model can explain the W+dijet excess without extra symmetries.

Predictions for experimental signatures of the scalar doublet.

Comparison with alternative explanations of the excess.

Abstract

We propose a particularly simple explanation of the W+dijet excess reported by the CDF collaboration. No symmetries beyond those of the standard model are necessary, and the only new particles involved are a spin-zero weak SU(2) doublet with no vacuum expectation value. Possible tests of the model and comparisons to other proposals are discussed.