Measurements of neutral vector resonance in Higgsless models at the LHC

TL;DR

This paper investigates the detection of neutral vector resonances (Z') predicted by Higgsless models at the LHC, focusing on the W-associated production channel and employing the MAOS reconstruction method to determine the Z' mass despite neutrino-related challenges.

Contribution

It introduces a novel application of the MAOS reconstruction technique for Z' mass measurement in Higgsless models at the LHC, addressing neutrino reconstruction issues.

Findings

MAOS method effectively reconstructs neutrino momenta.

Z' mass can be determined with improved accuracy.

W-associated production is a promising channel for Z' detection.

Abstract

In Higgsless models, new vector resonances appear to restore the unitarity of the W_L W_L scattering amplitude without the Higgs boson. In the ideal delocalized three site Higgsless model, one of large prodcution cross section of the neutral vector resonance (Z') at the Large Hadron Collider is the W-associated production, pp \to Z'W \to WWW. Although the dileptonic decay channnel, l\nu l'\nu 'jj, is experimentally clean to search for the Z' signals, it is difficult to reconstruct the Z' invariant mass due to the two neutrinos in the final state. We study collider signatures of Z' using the M_{T2}-Assisted On-Shell (MAOS) reconstruction of the missing neutrino momenta. We show the prospect of the Z' mass determination in the channel, l\nu l'\nu 'jj, at the Large Hadron Collider.