Speaker
JINHEUNG KIM
Description
Many Beyond the Standard Model (BSM) theories predict new scalar bosons 𝜙 that couple to top quarks. Such scalars contribute to $gg\to t\bar{t}$ production via $gg\to \phi^* \to t\bar{t}$, leading to significant interference with the Standard Model $gg\to t\bar{t}$ amplitude. Near the $t\bar{t}$ threshold, top quark pairs form bound states, requiring careful theoretical treatment of the production dynamics. In this work, we study the interference between BSM scalar and SM $t\bar{t}$ production while explicitly incorporating bound state effects through matrix element reweighting techniques. This approach allows us to properly account for the modified kinematics and enhanced sensitivity to new physics signatures in the near-threshold region.
| Field | Pheno |
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