Impact of Rare Decays T → ℓ′νbℓℓ and T → Qq′bℓℓ on Searches for Top-Associated Physics
The Journal of high energy physics/The journal of high energy physics(2018)
摘要
Searches for top quark-associated physics such as \( t\overline{t}W \) or \( t\overline{t}H \) in final states with multiple leptons require a careful accounting of expected backgrounds due to the lack of reconstructible resonances. We demonstrate that the rare top quark decays t → ℓ′νbℓℓ and t → qq′bℓℓ, when a soft lepton is not detected, can contribute a non-negligible background to such searches. Simulations in the LHC experiments typically do not account for such decays and as such backgrounds to such searches may be underestimated.
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关键词
Hadron-Hadron scattering (experiments),Higgs physics,Rare decay,Top physics
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