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- W4367394293 abstract "Abstract In view of the recent high precision measurement of the Standard Model W boson mass at the CDF II detector, we compute the contributions to the oblique parameters S , T and U coming from the two additional Higgs doublets (one inert and one hidden) as well as the hidden neutral dark gauge bosons and extra heavy fermions in the gauged two-Higgs-doublet model (G2HDM). While the effects from the hidden Higgs doublet and new heavy fermions are found to be minuscule, the hidden gauge sector $$SU(2)_H times U(1)_X$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mrow> <mml:mi>S</mml:mi> <mml:mi>U</mml:mi> <mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:mn>2</mml:mn> <mml:mo>)</mml:mo> </mml:mrow> <mml:mi>H</mml:mi> </mml:msub> <mml:mo>×</mml:mo> <mml:mi>U</mml:mi> <mml:msub> <mml:mrow> <mml:mo>(</mml:mo> <mml:mn>1</mml:mn> <mml:mo>)</mml:mo> </mml:mrow> <mml:mi>X</mml:mi> </mml:msub> </mml:mrow> </mml:math> with gauge coupling strength $$gtrsim 10^{-2}$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mrow> <mml:mo>≳</mml:mo> <mml:msup> <mml:mn>10</mml:mn> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>2</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> </mml:math> and gauge boson mass $$gtrsim 100$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mrow> <mml:mo>≳</mml:mo> <mml:mn>100</mml:mn> </mml:mrow> </mml:math> GeV can readily explain the W boson mass anomaly but is nevertheless excluded by the dilepton high-mass resonance searches at the Large Hadron Collider. On the other hand, the new global fits to the oblique parameters due to the new W boson mass measurement can give discernible impacts on the mass splitting and mixing angle for the inert Higgs doublet in G2HDM. We also study the impact on the signal strength of diphoton mode of the 125 GeV Higgs boson $$h rightarrow gamma gamma $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mrow> <mml:mi>h</mml:mi> <mml:mo>→</mml:mo> <mml:mi>γ</mml:mi> <mml:mi>γ</mml:mi> </mml:mrow> </mml:math> and the detectability of the yet to be observed process $$h rightarrow Z gamma $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mrow> <mml:mi>h</mml:mi> <mml:mo>→</mml:mo> <mml:mi>Z</mml:mi> <mml:mi>γ</mml:mi> </mml:mrow> </mml:math> at the High Luminosity Large Hadron Collider. Current constraints for the dark matter candidate $$W^prime $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msup> <mml:mi>W</mml:mi> <mml:mo>′</mml:mo> </mml:msup> </mml:math> including the dark matter relic density, dark matter direct detections and invisible Higgs decays are also taken into account in this study." @default.
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- W4367394293 date "2023-04-29" @default.
- W4367394293 modified "2023-10-14" @default.
- W4367394293 title "Scrutinizing a hidden SM-like gauge model with corrections to oblique parameters" @default.
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- W4367394293 doi "https://doi.org/10.1140/epjc/s10052-023-11495-x" @default.
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