Searching for new exotic particle production at future electron-positron Higgs factories
supervisor: prof. dr hab Aleksander Filip Żarnecki, email: zarnecki@fuw.edu.pl
An electron-positron Higgs factory is the highest-priority next collider, with several proposals for such a machine being discussed. Although the primary goals of the Higgs factory are precision measurements of the Higgs boson, top quark and the electroweak interactions, it will also be very well suited to look for new exotic phenomena. There are many models that predict the existence of new particles which could be observed at future electron-positron colliders. Recently studied in our group were production of heavy neutral leptons, long-lived particles and light exotic scalars. The aim of the exercise would be to analyse the results of a computer simulation of the exotic particle production process within a selected benchmark model, assuming particular decay channel, and then try to optimize the procedure that distinguishes such events from the background of the Standard Model processes. The final result should be the expected precision of measurement in the considered channel or the expected limits on the signal strength or parameters of the model. The exercise requires a good knowledge of programming and numerical methods.
For more information:
- Paper describing searches for exotic long-lived particles at ILC: arXiv:2409.13492
- Papers describing searches for Heavy Neutral Leptons at future e+e- colliders: K. Mekala et al., JHEP 06 (2022) 010, arXiv:2202.06703, K. Mekala et al., JHEP 03 (2024) 075, arXiv: 2312.05223
- Paper describing the prospects for the search for dark matter production in the “mono-photon” channel in ILC and CLIC: J. Kalinowski et al., Eur.Phys.J.C 81 (2021) 10, 955, arXiv:2107.11194
- Paper describing the prospects for the discovery of IDM model particles in CLIC: J. Kalinowski et al., Exploring Inert Scalars at CLIC, JHEP 1907 (2019) 053, arXiv:1811.06952