CALCULATION OF KINEMATIC DEPENDENT VARIABLES FOR TRILINEAR HIGGS COUPLING DETERMINATION VIA SINGLE-HIGGS DIFFERENTIAL MEASUREMENTS AT THE CMS EXPERIMENT AT THE LHC

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2022-5-11

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Durmuş, Özgür

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After the Higgs boson discovery in 2012, it is only natural that experimentalists focus on measuring its properties. Although, various production cross sections and branching ratios have been measured, the trilinear Higgs self-coupling $\lambda_{3}$ is still largely unconstraint. Therefore, it is one of the most significant intense theoretical and experimental activities at LHC. Studying double Higgs production is the standard way for probing $\lambda_{3}$ as it directly depends on the $\lambda_{3}$ at the leading order. However, the cross section of the main production channel i.e. gluon fusion is only around 35 fb$^{-1}$ at 13 TeV while the single Higgs production cross section is around 50 pb$^{-1}$. To further enhance the sensitivity studying differential dependencies is crucial. The aim of this thesis is to calculate kinematic and process dependent parameters that arise in the case of modified trilinear coupling. The calculated parameters will be provided to the CMS Higgs combination group for vector boson fusion, ttH, VH production modes in bins of transverse momentum of Higgs boson.

Subject Keywords

Higgs coupling, CMS, LHC

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https://hdl.handle.net/11511/97386

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

Ö. Durmuş, “CALCULATION OF KINEMATIC DEPENDENT VARIABLES FOR TRILINEAR HIGGS COUPLING DETERMINATION VIA SINGLE-HIGGS DIFFERENTIAL MEASUREMENTS AT THE CMS EXPERIMENT AT THE LHC,” M.S. - Master of Science, Middle East Technical University, 2022.