An effective approach to same sign top pair production at the LHC and the forward-backward asymmetry at the Tevatron

TL;DR

This paper investigates same sign top pair production at the LHC using a model-independent approach with dimension six operators, linking it to Tevatron asymmetry data and exploring viable production mechanisms.

Contribution

It introduces a comprehensive set of dimension six operators to analyze top pair production and connects different production channels to experimental data.

Findings

Tevatron data disfavors t-channel models

Other production mechanisms remain viable

Potential for testing at the LHC

Abstract

We study the phenomenology of same sign top pair production at the LHC in a model-independent way. The complete set of dimension six operators involving two top (or anti-top) quarks is introduced and the connection with all possible t- or s-channel particle exchanges is established. Only in the former case, same and opposite sign top pair production can be related. We find that while current Tevatron data disfavor t-channel models, other production mechanisms are viable and can be tested at the LHC.