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- W4308713059 abstract "It is well know that the precise measurement of $Htogammagamma$ can generate two degenerate parameter spaces of $Hgammagamma$ anomalous coupling. We propose to utilize the exclusive Higgs rare decays $HtoUpsilon(ns)+gamma$ to break above mentioned degeneracy and further to constrain the $Hgammagamma$ anomalous coupling at the HL-LHC. We demonstrate that the branching ratios of $HtoUpsilon(ns)+gamma$ can be significantly enhanced in the non-SM-like parameter space from $Htogammagamma$ measurement, due to the destructive interference between the direct and indirect production of $Upsilon(ns)$ in the SM. By applying the NRQCD factorization formalism, we calculate the partial decay widths of $HtoUpsilon(ns)+gamma$ at the NLO accuracy of $alpha_s$. We show that it is hopeful to break such degenerate parameter space at the HL-LHC if we can further highly suppress the background and enhance the signal efficiency compared to the ATLAS preliminary simulation." @default.
- W4308713059 created "2022-11-14" @default.
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- W4308713059 date "2022-11-10" @default.
- W4308713059 modified "2023-10-15" @default.
- W4308713059 title "Probing the <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>H</mml:mi><mml:mi>γ</mml:mi><mml:mi>γ</mml:mi></mml:math> coupling via Higgs boson exclusive decay into quarkonia plus a photon at the HL-LHC" @default.
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- W4308713059 doi "https://doi.org/10.1103/physrevd.106.095013" @default.
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