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- W2766526946 abstract "A bstract With the Higgs search program already quite mature, there is the exciting possibility of discovering a new particle with rates near that of the SM Higgs. We consider models with a signal in γγ below the SM Higgs mass. We discuss singlet models with additional vectorlike matter, but argue that a Type-I two Higgs doublet model can more easily provide detectable rates. In such scenarios, in regions of moderate-to-strong fermiophobia, the enhanced γγ branching ratio allows signals from V H +VBF production to yield σ × BR γγ comparable to total SM rates and would thus be detectable. Light H production can be dominated via rare top decays t → bH + → bW ∗ H , which provides an even more efficient means of production. We also consider this in the context of various Higgs anomalies, specifically the recent 2 . 9 σ (local) CMS excess at 95 GeV, the LEP Higgs excess near the same mass, and excesses in $$ toverline{t}h $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>t</mml:mi> <mml:mover> <mml:mi>t</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mi>h</mml:mi> </mml:math> searches at Tevatron and LHC. We find regions of parameter space that can meet all simultaneously. An implication of the Type-I scenario is that any γγ excess should be associated with additional elements that could reduce background, including b -jets, forward jets or signs of vector boson production." @default.
- W2766526946 created "2017-11-10" @default.
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- W2766526946 date "2018-08-01" @default.
- W2766526946 modified "2023-10-18" @default.
- W2766526946 title "Light signals from a lighter Higgs" @default.
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- W2766526946 doi "https://doi.org/10.1007/jhep08(2018)025" @default.
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