Test of the Standard Model of particle physics at the Large Hadron Collider of CERN by analysing the proton-proton collision data of the CMS experiment, primarily by studying the production of two electroweak vector bosons. Study of the rare vector boson scattering phenomena and measurement of anomalous triple and quartic vector boson couplings.

Search for new phenomena beyond the Standard Model of Particle Physics at the CERN Large Hadron Collider by analysing data from the CMS experiment, primarily by studying the predictions of supersymmetric models (CMSSM, PMSSM, GMSB, GGM) and models with axion-like particles. The currently ongoing measurements investigate the pair production of scalar top quarks in model with compressed superpartner mass spectrum, and the pair production of gluinos and chargino-neutralino in the models of gauge mediated supersymmetry breaking.

Application of machine learning methods for real-time monitoring of the data quality of complex detector systems, as well as for the optimal use of the collected data in particle physics measurements to measure rare phenomena predicted by the Standard Model (SM) and to search for exotic particles signaling new physics beyond the SM. The current and so far planned measurements are aimed at monitoring the data quality of the luminosity detectors of the CERN LHC CMS experiment, measuring double parton scattering, and detecting new supersymmetric particles.

At hadron colliders, such as CERN’s Large Hadron Collider, the LHC, the accurate determination of the data delivered by the accelerator is a major challenge and is based on the van der Meer transverse beam separation method named after the Nobel Prize-winning physicist. The method assumes an accurate knowledge of the properties of the particle bunches circulating in the accelerator beams, as well as the factorability of the particle density of the bunches in the transverse direction. Both assumptions can lead to important systematic biases, the precise determination of which is essential for a precise luminosity measurement. In addition to the beam instrumentation, stable, high-linearity particle detectors are also required for the measurement. The high-intensity upgrade of the LHC, the HL-LHC requires an improved luminosity detector system. The new detectors are primarily based on semiconductor technology. In international cooperation, we participate in the design of the CMS detector BRIL (Beam conditions, Radiation Instrumentation and Luminosity) system.

Test of the standard model of particles physics and search for new physics at the future collider. Preparatory studies.