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Sub-TeV H^+ Boson Production as Probe of Extra Top Yukawa Couplings

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arxiv 1912.10613 v2 pith:VWISLFY6 submitted 2019-12-23 hep-ph hep-ex

Sub-TeV H^+ Boson Production as Probe of Extra Top Yukawa Couplings

classification hep-ph hep-ex
keywords bosoncouplingsdataextrahiggsyukawaaddingantimatter
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We suggest searching for the charged Higgs boson at the Large Hadron Collider (LHC) via $cg \to b H^+ \to b t \bar b$. In the general two Higgs Doublet Model, extra top Yukawa couplings $\rho_{tc}$ and $\rho_{tt}$ can drive the disappearance of antimatter from the Universe, while $\bar cbH^+$ and $\bar tbH^+$ couple with strength $\rho_{tc}V_{tb}$ and $\rho_{tt}V_{tb}$, respectively. For $\rho_{tc},\, \rho_{tt} \sim 0.5$ and $m_{H^+} \sim 300$--500 GeV, evidence could emerge from LHC Run 2 data at hand, and discovery by adding Run 3 data in the near future.

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    G2HDM plus a Z2-odd real scalar singlet yields viable top-window dark matter and six LHC benchmarks, including flavor-violating mono-top production of invisible H→SS.