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arXiv · 2402.18460

Z' boson mass reach and model discrimination at muon colliders

Kateryna Korshynska·Maximilian Löschner·Mariia Marinichenko·Krzysztof Mękała·Jürgen Reuter
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Abstract

We study the discrimination power of future multi-TeV muon colliders for a large set of models with extended gauge symmetries and additional neutral gauge bosons ("$Z'$-models"). Our study is carried out using a $\chi^2$-analysis of leptonic observables of s-channel scattering in effective $Z'$-models. We make use of angular and chiral asymmetries induced in such models to find the discovery reach of a given muon collider setup in terms of the $Z'$ mass and to discriminate between the different scenarios. In this context, we discuss how polarized beams - should they become available at muon colliders - or polarization measurements can help in the discrimination. Our results show that typical muon collider setups which are currently under consideration can give a significantly higher reach compared to existing bounds and projections for high-luminosity LHC.

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Kateryna Korshynska, Maximilian Löschner, Mariia Marinichenko, Krzysztof Mękała, Jürgen Reuter. 2024-02-28. Z' boson mass reach and model discrimination at muon colliders. https://doi.org/10.1140/epjc%2Fs10052-024-12892-6

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