CP-violating Higgs-gauge boson couplings in [Formula omitted] production at three energy stages of CLIC

CP-violating Higgs-gauge boson couplings in [Formula omitted] production at three energy stages of CLIC

A phenomenological study of CP-violating dimension-six operators via the [Formula omitted] process is performed in a model-independent Standard Model effective field theory framework at all energy stages of CLIC using the updated baseline integrated luminosities. All signal and relevant background e...

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Veröffentlicht in:The European physical journal. C, Particles and fields Particles and fields, 2020-03, Vol.80 (3)
Hauptverfasser: Karadeniz, O, Senol, A, Oyulmaz, K. Y, Denizli, H
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container_title The European physical journal. C, Particles and fields
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creator Karadeniz, O
Senol, A
Oyulmaz, K. Y
Denizli, H
description A phenomenological study of CP-violating dimension-six operators via the [Formula omitted] process is performed in a model-independent Standard Model effective field theory framework at all energy stages of CLIC using the updated baseline integrated luminosities. All signal and relevant background events are generated in MadGraph and passed through PYTHIA for parton showering and hadronization at parton level. Detector effects are considered via tuned CLIC detector cards in Delphes. Since we reconstruct the Higgs boson from a pair of b-jets, limits on CP-violating dimension-six couplings are obtained at three b-tagging working points: tight, medium and loose defined in the CLIC Delphes card for all three energy stages of CLIC. Our best 95 % C.L. limits at the loose working point (90 % b-tagging efficiency) on [Formula omitted] and [Formula omitted] are [Formula omitted] and [Formula omitted], respectively at the 3 TeV energy stage of CLIC with an integrated luminosity of 5.0 ab [Formula omitted]. Considering a 0.3 % systematic uncertainty from possible experimental sources worsens the limits on these couplings by a factor of two.
doi_str_mv 10.1140/epjc/s10052-020-7740-1
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title CP-violating Higgs-gauge boson couplings in [Formula omitted] production at three energy stages of CLIC
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