Comparing mesons and W_L W_L TeV-resonances

TL;DR

This paper explores potential high-energy analogues of known meson resonances in the electroweak sector, using unitarized effective theories to interpret possible TeV-scale resonances hinted at by LHC data.

Contribution

It compares low-energy meson resonances with potential TeV-scale electroweak resonances using unitarized effective theories, providing a framework to interpret LHC hints.

Findings

Constraints of unitarity and causality guide the analogy between GeV and TeV resonances.

The 2 TeV ATLAS excess could signal a new resonance with anomalous q qbar W coupling.

The Inverse Amplitude Method helps extend intuition from known mesons to high-energy resonances.

Abstract

Tantalizing LHC hints suggest that resonances of the Electroweak Symmetry Breaking Sector might exist at the TeV scale. We recall a few key meson-meson resonances in the GeV region that could have high-energy analogues which we compare, as well as the corresponding unitarized effective theories describing them. While detailed dynamics may be different, the constraints of unitarity, causality and global-symmetry breaking, incorporated in the Inverse Amplitude Method, allow to carry some intuition over to the largely unmeasured higher energy domain. If the 2 TeV ATLAS excess advances one such new resonance, this could indicate an anomalous q qbar W coupling.