Colloquium Roman Kogler (DESY) "Dispelling the sqrt(L) myth for the High-Luminosity LHC"

by Roman Kogler (DESY)

Tuesday 3 Jun 2025, 16:00 → 18:00 Europe/Vienna

Besprechungsraum 3A.1/2 (PSK)

Extrapolations of sensitivity to new interactions and standard model parameters are crucial in planning future upgrade programmes and colliders. Such studies were performed in 2018-2019 to estimate the physics potential of the LHC's high-luminosity phase (HL-LHC) and are currently underway for future colliders. Statistical considerations based on established analysis strategies typically give rise to a sensitivity scaling with the square root of the luminosity, sqrt(L). This suggests only a mild sensitivity improvement for the HL-LHC compared to the presently available LHC data. In this talk, I will provide clear evidence that the sqrt(L) scaling for the HL-LHC is overly conservative and unrealistic, using representative analyses in top quark, Higgs boson and electroweak gauge boson phenomenology, and searches for new physics.