Előadó:Somogyi Gábor (Wigner FK RMI)
Előadásának címe: NNLOCAL: completely local subtractions for color-singlet production in hadron collisions
Dátum: 2025. február 7.péntek 14 óra
Helyszín: 3-as épület tanácsterem
Összefoglaló:
The precise theoretical description of particle collisions is of paramount importance for fully exploiting the physics potential of the LHC and future colliders. The comparison of accurate measurements with high-precision calculations will be crucial not only for understanding subtle features of the Standard Model, such as the exact shape of the Higgs potential, but may also prove vital for finding signs of physics beyond the Standard Model. One particular aspect of increasing precision involves computing higher-order perturbative corrections to physical observables such as scattering cross sections. However, the straightforward application of perturbation theory beyond leading order is hampered by the presence of infrared singularities at intermediate stages of the calculation. In this talk, we concentrate on treating these singularities via the subtraction method and discuss the extension of the completely local CoLoRFulNNLO scheme to the case of initial state radiation. We then present NNLOCAL, a proof-of-concept Monte Carlo program implementing our scheme for the case of color-singlet production in hadron collisions.
