Pseudo-Goldstone Boson Effects in Top-Antitop Productions at High Energy Hadron Colliders and Testing Technicolor Models

TL;DR

This paper investigates how pseudo-Goldstone bosons in technicolor models influence top-antitop production at high-energy colliders, proposing experimental tests to distinguish between models at the LHC.

Contribution

It introduces the impact of s-channel PGBs in technicolor models on top pair production and demonstrates their testability at the LHC.

Findings

PGB effects significantly alter top pair production cross sections.

Different TC models produce distinguishable signatures at the LHC.

P+p-->top+antitop process can effectively test technicolor models.

Abstract

We study the top quark pair production process p+p(anti-p)-->top+antitop in various kinds of technicolor (TC) models at the Fermilab Tevatron Run II and the CERN LHC. The s-channel neutral pseudo-Goldstone bosons (PGB's) contribute dominately to the production amplitudes from its coupling to the gluons through the triangle loops of techniquarks and the top quark. Cross sections in different TC models with s-channel PGB contributions are calculated. It is shown that the PGB effects can be experimentally tested and different TC models under consideration can be distinguished at the LHC. Therefore, the p+p-->top+antitop process at the LHC provides feasible tests of the TC models.