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Measurements of the Higgs Boson Inclusive and Differential Fiducial Cross-sections in the Diphoton Decay Channel with Pp Collisions at [square Root]s

2022
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Release : 2022
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Book Synopsis Measurements of the Higgs Boson Inclusive and Differential Fiducial Cross-sections in the Diphoton Decay Channel with Pp Collisions at [square Root]s by : [Study Group] ATLAS Collaboration CERN

Download or read book Measurements of the Higgs Boson Inclusive and Differential Fiducial Cross-sections in the Diphoton Decay Channel with Pp Collisions at [square Root]s written by [Study Group] ATLAS Collaboration CERN. This book was released on 2022. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: A measurement of inclusive and differential fiducial cross-sections for the production of the Higgs boson decaying into two photons is performed using 139 fb−1 of proton-proton collision data recorded at s√ = 13 TeV by the ATLAS experiment at the Large Hadron Collider. The inclusive cross-section times branching ratio, in a fiducial region closely matching the experimental selection, is measured to be 67 ± 6 fb, which is in agreement with the state-of-the-art Standard Model prediction of 64 ± 4 fb. Extrapolating this result to the full phase space and correcting for the branching ratio, the total cross-section for Higgs boson production is estimated to be 58 ± 6 pb. In addition, the cross-sections in four fiducial regions sensitive to various Higgs boson production modes and differential cross-sections as a function of either one or two of several observables are measured. All the measurements are found to be in agreement with the Standard Model predictions. The measured transverse momentum distribution of the Higgs boson is used as an indirect probe of the Yukawa coupling of the Higgs boson to the bottom and charm quarks. In addition, five differential cross-section measurements are used to constrain anomalous Higgs boson couplings to vector bosons in the Standard Model effective field theory framework

Higgs Boson Cross Section Measurements in the Diphoton Decay Channel in Proton-proton Collisions at √s

2021 Electronic dissertations
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Release : 2021
Genre : Electronic dissertations
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Book Synopsis Higgs Boson Cross Section Measurements in the Diphoton Decay Channel in Proton-proton Collisions at √s by : Ivan Konstantinovich Pogrebnyak

Download or read book Higgs Boson Cross Section Measurements in the Diphoton Decay Channel in Proton-proton Collisions at √s written by Ivan Konstantinovich Pogrebnyak. This book was released on 2021. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents ATLAS measurements of the total and differential fiducial cross sections for the process of the Higgs boson production and subsequent decay to two photons. The analyzed dataset of proton-proton collisions at √s = 13 TeV has an integrated luminosity of 139 ifb and was collected during the Run 2 of the Large Hadron Collider in 2015–2018. The cross sections were measured in a fiducial phase space closely matching the experimental selection, and compared to the Standard Model predictions from the state-of-the-art calculations. The differential cross sections were measured with respect to an array of observables, allowing us to probe the kinematics, jet activity, and spin and CP properties of the Higgs boson interactions. The data were analyzed iteratively, with yearly results from partial datasets presented at conferences and in publications. The inclusive fiducial cross section obtained from the analysis of the full Run 2 dataset is 65.2 ± 4.5 (stat.) ± 5.6 (exp.) ± 0.3 (theory) fb, which is in excellent agreement with the SM prediction of 63.5 ± 3.3 fb. The results provide the state-of-the-art experimental measurements of the Higgs boson production cross sections, and extend our confidence in the SM in the Higgs sector and QCD, as well as in the computational techniques used to obtain theoretical predictions.

Measurement of Differential Cross Sections for Higgs Boson Production in the Diphoton Decay Channel in Pp Collisions at $\sqrt{s}$

2016
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Release : 2016
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Book Synopsis Measurement of Differential Cross Sections for Higgs Boson Production in the Diphoton Decay Channel in Pp Collisions at $\sqrt{s}$ by :

Download or read book Measurement of Differential Cross Sections for Higgs Boson Production in the Diphoton Decay Channel in Pp Collisions at $\sqrt{s}$ written by . This book was released on 2016. Available in PDF, EPUB and Kindle. Book excerpt: Here, we presented a measurement of differential cross sections for the Higgs boson (H) production in pp collisions at √s = 8 TeV. The analysis exploits the H →?? decay in data corresponding to an integrated luminosity of 19.7 fb-1 collected by the CMS experiment at the LHC. The cross section is measured as a function of the kinematic properties of the diphoton system and of the associated jets. Results corrected for detector effects are compared with predictions at next-to-leading order and nextto-next-to-leading order in perturbative quantum chromodynamics, as well as with predictions beyond the standard model. Furthermore, for isolated photons with pseudorapidities.

Measurement of Differential and Integrated Fiducial Cross Sections for Higgs Boson Production in the Four-lepton Decay Channel in Pp Collisions at $ \sqrt{s}

2016
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Release : 2016
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Book Synopsis Measurement of Differential and Integrated Fiducial Cross Sections for Higgs Boson Production in the Four-lepton Decay Channel in Pp Collisions at $ \sqrt{s} by :

Download or read book Measurement of Differential and Integrated Fiducial Cross Sections for Higgs Boson Production in the Four-lepton Decay Channel in Pp Collisions at $ \sqrt{s} written by . This book was released on 2016. Available in PDF, EPUB and Kindle. Book excerpt: Integrated fiducial cross sections for the production of four leptons via the H → 4l decays (l = e, [mu]) are measured in pp collisions at $ \sqrt{s}=7 $ and 8TeV. Measurements are performed with data corresponding to integrated luminosities of 5.1 fb$^{-1}$ at 7TeV, and 19.7 fb$^{-1}$ at 8 TeV, collected with the CMS experiment at the LHC. Differential cross sections are measured using the 8 TeV data, and are determined as functions of the transverse momentum and rapidity of the four-lepton system, accompanying jet multiplicity, transverse momentum of the leading jet, and difference in rapidity between the Higgs boson candidate and the leading jet. A measurement of the Z → 4l cross section, and its ratio to the H → 4l cross section is also performed. All cross sections are measured within a fiducial phase space defined by the requirements on lepton kinematics and event topology. Here, the integrated H → 4l fiducial cross section is measured to be 0.56$_{-0.44}^{+0.67}$ (stat)$_{-0.06}^{+0.21}$ (syst) fb at 7 TeV, and 1.11$_{-0.35}^{+0.41}$ (stat)$_{-0.10}^{+0.14}$ (syst) fb at 8 TeV. The measurements are found to be compatible with theoretical calculations based on the standard model.

Measurements of Fiducial Differential Cross Sectionsfor Higgs Boson Production in the Diphoton Decay Channel at √s

2016
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Release : 2016
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Book Synopsis Measurements of Fiducial Differential Cross Sectionsfor Higgs Boson Production in the Diphoton Decay Channel at √s by : Marco Filipuzzi

Download or read book Measurements of Fiducial Differential Cross Sectionsfor Higgs Boson Production in the Diphoton Decay Channel at √s written by Marco Filipuzzi. This book was released on 2016. Available in PDF, EPUB and Kindle. Book excerpt:

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