Exercises in research groups (003)

Reconstruction of top quark production events at CLIC
supervisor: prof. dr hab Aleksander Filip Żarnecki, email: zarnecki@fuw.edu.pl

One of the leading topics of research planned in future e+e- linear colliders is the study of the production of tt pairs and the properties of the t quark. This research will be carried out already in the first phase of operation of the CLIC accelerator, with a collision energy of 380 GeV, for which the production of more than one million t quarks is expected, but will also be continued for the impact energy of 1.5 TeV and 3 TeV, at which it is possible to study additional production channels. The aim of the exercise would be to analyze the results of a rapid computer simulation of the production process of tt pairs and to optimize the procedure for the selection of cases and the reconstruction of their kinematics (invariant masses of two t quarks and their decay products) on the basis of particles reconstructed in the final state. The exercise requires a good knowledge of programming and numerical methods. Knowledge of the ROOT environment is welcome.

For more information:

  • Conference presentation Top-quark physics at CLIC (EPS-HEP’2019 conference)
  • Website of the international cooperation CLIC Detector and Physics (CLICdp)
  • Review paper describing the prospects for top quark research in CLIC: CLICdp Collaboration (H. Abramovich et al.), Top-Quark Physics at the CLIC Electron-Positron Linear Collider, JHEP 1911 (2019) 003, arXiv:1807.02441
  • Detector design for CLIC: D. Arominski et al.,  A detector for CLIC: main parameters and performance, arXiv: 1812.07337
  • ROOT page
  • Description of the DELPHES environment: J. de Favereau et al., DELPHES 3, A modular framework for fast simulation of a generic collider experiment, JHEP 02 (2014) 057, arXiv: 1307.6346
  • Description of the CLIC detector in delphes: E. Leogrande et al., A DELPHES card for the CLIC detector, arXiv: 1909.12728