Hadron collider potential for excited bosons search: A Snowmass whitepaper

TL;DR

This whitepaper evaluates the potential of hadron colliders, especially the LHC, to discover excited neutral bosons Z* through dilepton channels, providing projections for future energies and luminosities.

Contribution

It offers a comparative analysis of collider sensitivities for Z* boson searches, extending previous ATLAS results to higher energies and luminosities.

Findings

Dilepton channels provide a clean signature for Z* detection.

Higher collider energies improve the discovery potential.

Projected sensitivities at future LHC runs are outlined.

Abstract

The dilepton final states, e+e- and mu+mu-, are the most clear channels for new heavy neutral resonances search. Their advantage is that the main irreducible background from the Standard Model Drell-Yan process contributes usually two orders of magnitude lower than the expected signal under the peak region. In this paper we are focused on the search of the excited neutral bosons Z*. At present only the ATLAS Collaboration is looking for such excitations at LHC. We compare our evaluations with the official collaboration results at 7 TeV, and present our estimations at higher centre-of-mass energies in pp collisions and different luminosities.