Testing CDF's Dijet Excess and Technicolor at the LHC

TL;DR

This paper investigates the potential to observe a technicolor-related dijet excess at the LHC, proposing specific cuts and channels to distinguish it from backgrounds, building on the CDF anomaly near 150 GeV.

Contribution

The study introduces tailored analysis strategies for LHC data to confirm or refute the technicolor interpretation of the CDF dijet excess, focusing on new decay channels and optimized cuts.

Findings

CDF-like cuts are unlikely to confirm the signal at LHC.

Proposed cuts can effectively reveal the technipion signal.

Emphasizes the importance of isospin-related channels for detection.

Abstract

Under the assumption that the dijet excess seen by the CDF Collaboration near 150 Gev in Wjj production is due to the lightest technipion of the low-scale technicolor process $\rho_T \rightarrow W \pi_T$, we study its observability in LHC detectors with 1-5 fb^{-1} of data. We find that cuts similar to those employed by CDF are unlikely to confirm its signal. We propose cuts tailored to the LSTC hypothesis and its backgrounds at the LHC that can reveal $\pi_T \rightarrow jj$. We also stress the importance at the LHC of the isospin-related channel $\rho^{\pm}_T \rightarrow Z\pi^{\pm}_T \rightarrow \ell\ell jj$ and the all-lepton mode $\rho^{pm}_T \rightarrow WZ \rightarrow 3\ell + \nu$.