Exploring the Higgs-muon coupling at a multi-TeV muon collider

Celada, Eugenia (2022) Exploring the Higgs-muon coupling at a multi-TeV muon collider. [Laurea magistrale], Università di Bologna, Corso di Studio in Physics [LM-DM270]
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We investigate the potential of a high-energy muon collider in measuring the muon Yukawa coupling (y_μ) in the production of two, three and four heavy bosons via muon-antimuon annihilations. We study the sensitivity of these processes to deviations of y_μ from the Standard Model prediction, parametrized by an effective dimension-6 operator in the Standard Model Effective Field Theory (SMEFT) framework. We also consider the κ framework, in which the deviation is simply parametrized by a strength modification of the μ+μ−h vertex alone. Both frameworks lead to an energy enhancement of the cross sections with one or more vector bosons, although the κ framework yields stronger effects, especially for the production of four bosons. On the contrary, for purely-Higgs final states the cross section is suppressed in the κ framework, while it is extremely sensitive to deviations in the SMEFT. We show that the triple-Higgs production is the most sensitive process to spot new physics effects on y_μ.

Tipologia del documento
Tesi di laurea (Laurea magistrale)
Autore della tesi
Celada, Eugenia
Relatore della tesi
Correlatore della tesi
Corso di studio
Ordinamento Cds
Parole chiave
EFT,muon collider,higgs phenomenology
Data di discussione della Tesi
23 Settembre 2022

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