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- W2494037499 abstract "The quest for new heavy states is a critical component of the LHC physics program. In this letter, we study the search for pseudoscalar bosons produced in association with a $tbar{t}$ pair. We consider the final state $tbar{t} A to tbar{t} bbar{b}$ with di-leptonic top pair signature, and reconstruct the boosted $A to bbar{b}$ candidate with jet substructure techniques, achieving a remarkable sensitivity over a broad range of pseudoscalar masses and Yukawa couplings. We apply this strategy to a Type-I Two-Higgs-Doublet Model, demonstrating its ability to probe a realistic, UV-complete extended Higgs sector. In particular, we find that the $13~TeV$ LHC with $300~fb^{-1}$ of data can constrain the region $tanbeta>1.5$ at 95$%$ CL for a light pseudoscalar with $m_A = 50$ GeV. Moreover, the whole mass range $20~GeV<m_A<210~GeV$ can be ruled out for $tanbeta leq 1$. Finally, we show that it is also possible to directly probe the CP-structure of the heavy scalar, and hence to distinguish a CP-odd (A) from a CP-even (H) 2HDM resonance." @default.
- W2494037499 created "2016-08-23" @default.
- W2494037499 creator A5020558981 @default.
- W2494037499 creator A5021028877 @default.
- W2494037499 date "2016-11-03" @default.
- W2494037499 modified "2023-10-14" @default.
- W2494037499 title "Pseudoscalar searches with dileptonic tops and jet substructure" @default.
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