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- W4387138762 abstract "A bstract The general anomaly-free U(1)′ models allow non-universal lepton charges. We explore the sensitivities of FASER/FASER2, COHERENT and DUNE/T2HK precision experiments to the new gauge boson Z ′ and the new CP-even scalar ϕ . With non-universal lepton charges, distinctive reaches at FASER/FASER2 emerge in the regime of low $$ {m}_{Z^{prime }} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msub> <mml:mi>m</mml:mi> <mml:msup> <mml:mi>Z</mml:mi> <mml:mo>′</mml:mo> </mml:msup> </mml:msub> </mml:math> and small gauge coupling g BL for different U(1)′ charge setups. The COHERENT experiment and the future long-baseline experiments DUNE/T2HK also provide complementary probes to the available parameter space. For m ϕ < 2 $$ {m}_{Z^{prime }} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msub> <mml:mi>m</mml:mi> <mml:msup> <mml:mi>Z</mml:mi> <mml:mo>′</mml:mo> </mml:msup> </mml:msub> </mml:math> , the search for the scalar ϕ at FASER/FASER2 is sensitive to the mixing angle between the scalar singlet and the SM Higgs. In the case of m ϕ > 2 $$ {m}_{Z^{prime }} $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:msub> <mml:mi>m</mml:mi> <mml:msup> <mml:mi>Z</mml:mi> <mml:mo>′</mml:mo> </mml:msup> </mml:msub> </mml:math> , the kinematically allowed decay ϕ → Z ′ Z ′ changes the lifetime and decay rates of the scalar ϕ . The sensitivity reach highly depends on the Z ′ mass and the gauge coupling g BL ." @default.
- W4387138762 created "2023-09-29" @default.
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- W4387138762 date "2023-09-25" @default.
- W4387138762 modified "2023-10-18" @default.
- W4387138762 title "Probing general U(1)′ models with non-universal lepton charges at FASER/FASER2, COHERENT and long-baseline oscillation experiments" @default.
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- W4387138762 doi "https://doi.org/10.1007/jhep09(2023)168" @default.
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