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Measurements of the Higgs boson decays to two bottom quarks

$H \rightarrow b\bar{b}$ decays allow to probe the Yukawa coupling of the Higgs boson to down type quarks. Observing these processes at the LHC is extremely challenging due to the large multi-jet background; however, this can be greatly suppressed by triggering on Missing Transverse Energy and charg...

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Detalles Bibliográficos
Autor principal: Ambroz, Luca
Lenguaje:eng
Publicado: 2019
Materias:
Acceso en línea:https://dx.doi.org/10.22323/1.367.0085
http://cds.cern.ch/record/2689577
Descripción
Sumario:$H \rightarrow b\bar{b}$ decays allow to probe the Yukawa coupling of the Higgs boson to down type quarks. Observing these processes at the LHC is extremely challenging due to the large multi-jet background; however, this can be greatly suppressed by triggering on Missing Transverse Energy and charged leptons coming from the decay of a weak vector boson produced together with the Higgs boson. In this paper, the latest measurement for $H \rightarrow b\bar{b}$ decays associated with a $W$ or $Z$ boson with the ATLAS detector will be presented. Furthermore, the first $VH, H \rightarrow b\bar{b}$ differential measurement in bins of transverse momentum of the vector bosons will be discussed; this type of differential measurement is particularly sensitive to Beyond Standard Model physics, as probed through an Effective Field Theory approach.