Search for a heavy top t' to Wq in top events

TL;DR

This paper reports a search for a hypothetical heavy top-like quark (t') decaying to Wq, using data from the CDF II detector, aiming to detect new physics beyond the Standard Model.

Contribution

It introduces a method to identify a heavy t' quark by analyzing reconstructed mass and energy sums, setting limits on its existence.

Findings

No evidence of t' quark found within the data

Set limits on the mass of a potential t' quark

Demonstrated the effectiveness of energy sum and mass reconstruction in searches

Abstract

We present a search for a massive quark (t') decaying to Wq and thus mimicking the top quark decay signature in data collected by the CDF II detector corresponding to 2.8 fb^-1. We use the reconstructed mass of the t' quark and the scalar sum of the transverse energies in the event to discriminate possible new physics from Standard Model processes, and set limits on a standard 4th generation t' quark.