Vector resonances in weak-boson-fusion at future pp colliders

TL;DR

This paper estimates the potential of future high-energy colliders to detect vector resonances like W' produced via weak-boson-fusion, focusing on their decay into top-bottom quark pairs, within various beyond Standard Model theories.

Contribution

It introduces a search strategy for W' resonances in weak-boson-fusion at future colliders and evaluates their sensitivity to the W' mass and coupling parameters.

Findings

Future colliders can probe W' masses up to several TeV.

Weak-boson-fusion provides a complementary channel to Drell-Yan for W' detection.

The analysis highlights the importance of weak-boson-fusion in testing composite Higgs models.

Abstract

We present a first estimate of the reach of future pp colliders, the 14 TeV LHC and a futuristic 100 TeV pp collider, on a vector resonance, specifically a $W^{'}$, produced via weak-boson-fusion, and decaying dominantly into $tb$. The analysis is motivated by Composite Higgs, Randall-Sundrum and Little Higgs scenarios, which predict the existence of vector resonances with a large coupling to $W$ and $Z$ longitudinal bosons. In particular, in composite Higgs models with partial compositeness, the standard Drell-Yan production channel is suppressed at large coupling while the weak-boson-fusion is enhanced and could thus provide a unique opportunity to directly test the large coupling regime of the theory. We outline a search strategy for the $W^{'}$ in the weak-boson-fusion channel and present the reach of future colliders on the $W^{'}$ mass-coupling parameter space.