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Measurements of Higgs boson properties in proton-proton collisions at sqrt(s)=7, 8 and 13 TeV at the CERN Large Hadron Collider

Studies of production and decay of the spin-0 Higgs boson are described. In particular, anomalous couplings of the Higgs boson to two electroweak gauge bosons are studied from on-shell Higgs boson production with decay to 4l and WW -> l nu l nu using the Run 1 data collected by the CMS detector....

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Autor principal: Sarica, Ulascan
Lenguaje:eng
Publicado: 2018
Materias:
Acceso en línea:http://cds.cern.ch/record/2643613
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author Sarica, Ulascan
author_facet Sarica, Ulascan
author_sort Sarica, Ulascan
collection CERN
description Studies of production and decay of the spin-0 Higgs boson are described. In particular, anomalous couplings of the Higgs boson to two electroweak gauge bosons are studied from on-shell Higgs boson production with decay to 4l and WW -> l nu l nu using the Run 1 data collected by the CMS detector. The constraints and techniques are improved in the Run 2 on-shell analysis of the 4l decay channel. Events from Run 1 are also analyzed for the 4l vertex information to constrain the Higgs boson lifetime from above and thereby the Higgs boson total width from below. The width is constrained further by employing the off-shell technique in the 4l decay channel. These constraints are placed using events from both Run 1 and Run 2 datasets. Assumptions on the tensor structure of the resonance and the invariant mass lineshape are relaxed by placing joint constraints with different anomalous couplings. The SM-like total width analysis is also used to place approximate joint constraints on the Higgs boson mass and width, and preliminary constraints on the value of Higgs boson mass with the value of the total width unconstrained in the fit. No significant deviation from the Standard Model is found in the analyzed anomalous couplings or in the total width, and a preliminary value of Higgs boson mass from the combined Run 1 and Run 2 dataset is provided.
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spelling cern-26436132019-09-30T06:29:59Zhttp://cds.cern.ch/record/2643613engSarica, UlascanMeasurements of Higgs boson properties in proton-proton collisions at sqrt(s)=7, 8 and 13 TeV at the CERN Large Hadron ColliderParticle Physics - ExperimentParticle Physics - PhenomenologyStudies of production and decay of the spin-0 Higgs boson are described. In particular, anomalous couplings of the Higgs boson to two electroweak gauge bosons are studied from on-shell Higgs boson production with decay to 4l and WW -> l nu l nu using the Run 1 data collected by the CMS detector. The constraints and techniques are improved in the Run 2 on-shell analysis of the 4l decay channel. Events from Run 1 are also analyzed for the 4l vertex information to constrain the Higgs boson lifetime from above and thereby the Higgs boson total width from below. The width is constrained further by employing the off-shell technique in the 4l decay channel. These constraints are placed using events from both Run 1 and Run 2 datasets. Assumptions on the tensor structure of the resonance and the invariant mass lineshape are relaxed by placing joint constraints with different anomalous couplings. The SM-like total width analysis is also used to place approximate joint constraints on the Higgs boson mass and width, and preliminary constraints on the value of Higgs boson mass with the value of the total width unconstrained in the fit. No significant deviation from the Standard Model is found in the analyzed anomalous couplings or in the total width, and a preliminary value of Higgs boson mass from the combined Run 1 and Run 2 dataset is provided.CERN-THESIS-2018-189CMS-TS-2018-014oai:cds.cern.ch:26436132018-10-15T04:06:04Z
spellingShingle Particle Physics - Experiment
Particle Physics - Phenomenology
Sarica, Ulascan
Measurements of Higgs boson properties in proton-proton collisions at sqrt(s)=7, 8 and 13 TeV at the CERN Large Hadron Collider
title Measurements of Higgs boson properties in proton-proton collisions at sqrt(s)=7, 8 and 13 TeV at the CERN Large Hadron Collider
title_full Measurements of Higgs boson properties in proton-proton collisions at sqrt(s)=7, 8 and 13 TeV at the CERN Large Hadron Collider
title_fullStr Measurements of Higgs boson properties in proton-proton collisions at sqrt(s)=7, 8 and 13 TeV at the CERN Large Hadron Collider
title_full_unstemmed Measurements of Higgs boson properties in proton-proton collisions at sqrt(s)=7, 8 and 13 TeV at the CERN Large Hadron Collider
title_short Measurements of Higgs boson properties in proton-proton collisions at sqrt(s)=7, 8 and 13 TeV at the CERN Large Hadron Collider
title_sort measurements of higgs boson properties in proton-proton collisions at sqrt(s)=7, 8 and 13 tev at the cern large hadron collider
topic Particle Physics - Experiment
Particle Physics - Phenomenology
url http://cds.cern.ch/record/2643613
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