Moscow International School of Physics 2024

Monte-Carlo simulation of processes with heavy neutrino exchange on lepton colliders

5 Mar 2024, 10:00

12m

HSE Study Center “Voronovo”

Talk (10+2 min) Young Scientist Forum Young Scientist Forum

Speaker

Egor Vasenin (LPI)

Description

We study discovery potential for the heavy right-handed neutrino exchange contribution in the process $l^{+}{l}^{-}\to W^{+}{W}^{-}\to 4j(l=e,\mu )$ at future high-energy lepton colliders. Using the Whizard generator and DELPHES detector simulation framework it is shown that after applying cuts the only non-negligible background process from Standard model is $l^{+}{l}^{-}\to W^{+}{W}^{-}$. Generator uses seesaw type-I model to simulate signal. We use angular distributions to distinguish the signal from background due to heavy neutrinos right polarisation. Using a likelihood analysis we obtain upper limits for the mixing
parameter as a function of the heavy neutrino mass for future lepton colliders at $\sqrt{s}=1,3,10\text{TeV}$.

Presentation materials

Vasenin.pdf