Combined measurements of Higgs boson production cross sections and branching fractions arc presented. The combination is based on the analyses of the Higgs boson decay modes H -> gamma gamma, ZZ*, WW*, tau tau, b (b) over bar, mu mu, searches for decays into invisible final states, and on measurements of off-shell Higgs boson production. Up to 79.8 fb(-1) of proton-proton collision data collected at root S = 13 TeV with the ATLAS detector are used. Results are presented for the gluon-gluon fusion and vector-boson fusion processes, and for associated production with vector bosons or top-quarks. The global signal strength is determined to be mu = 1.11(-0.08)(+0.09). The combined measurement yields an observed (expected) significance for the vector-boson fusion production process of 6.5 sigma (5.3 sigma). Measurements in kinematic regions defined within the simplified template cross section framework are also shown. The results are interpreted in terms of modifiers applied to the Standard Model couplings of the Higgs boson to other particles, and are used to set exclusion limits on parameters in two-Higgs-doublet models and in the simplified minimal supersynunetric Standard Model. No significant deviations from Standard Model predictions are observed.

Aad, G., Abbott, B., Abbott, D. ., Abdinov, O., Abed Abud, A., Abeling, K., et al. (2020). Combined measurements of Higgs boson production and decay using up to 80  fb−1 of proton-proton collision data at s=13  TeV collected with the ATLAS experiment. PHYSICAL REVIEW D, 101(1) [10.1103/PhysRevD.101.012002].

Combined measurements of Higgs boson production and decay using up to 80  fb−1 of proton-proton collision data at s=13  TeV collected with the ATLAS experiment

Aielli, G.;Camarri, P.;Cerrito, L.;De Sanctis, U.;Dell’Asta, L.;Di Ciaccio, A.;Loffredo, S.;Vanadia, M.;
2020-01-01

Abstract

Combined measurements of Higgs boson production cross sections and branching fractions arc presented. The combination is based on the analyses of the Higgs boson decay modes H -> gamma gamma, ZZ*, WW*, tau tau, b (b) over bar, mu mu, searches for decays into invisible final states, and on measurements of off-shell Higgs boson production. Up to 79.8 fb(-1) of proton-proton collision data collected at root S = 13 TeV with the ATLAS detector are used. Results are presented for the gluon-gluon fusion and vector-boson fusion processes, and for associated production with vector bosons or top-quarks. The global signal strength is determined to be mu = 1.11(-0.08)(+0.09). The combined measurement yields an observed (expected) significance for the vector-boson fusion production process of 6.5 sigma (5.3 sigma). Measurements in kinematic regions defined within the simplified template cross section framework are also shown. The results are interpreted in terms of modifiers applied to the Standard Model couplings of the Higgs boson to other particles, and are used to set exclusion limits on parameters in two-Higgs-doublet models and in the simplified minimal supersynunetric Standard Model. No significant deviations from Standard Model predictions are observed.
2020
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/01 - FISICA SPERIMENTALE
English
Con Impact Factor ISI
Aad, G., Abbott, B., Abbott, D. ., Abdinov, O., Abed Abud, A., Abeling, K., et al. (2020). Combined measurements of Higgs boson production and decay using up to 80  fb−1 of proton-proton collision data at s=13  TeV collected with the ATLAS experiment. PHYSICAL REVIEW D, 101(1) [10.1103/PhysRevD.101.012002].
Aad, G; Abbott, B; Abbott, D ; Abdinov, O; Abed Abud, A; Abeling, K; Abhayasinghe, D ; Abidi, S ; Abouzeid, O ; Abraham, N ; Abramowicz, H; Abreu, H; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/227662
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