Femtoscopy
Seminars
VBLHEP Joint Laboratory Seminar
Date and Time: Friday, 13 May 2022, at 11:30 AM
Venue: Conference Hall (bld. 215), the Veksler and Baldin Laboratory of High Energy Physics; online seminar on Webex
Seminar topic: “Femtoscopy”
Speaker: E. P. Rogochaya
Abstract:
Femtoscopy is a measurement of space-time characteristics of particle emitting source at 10-15 m scale using particle correlations due to the effects of quantum statistics and final-state interactions. The study of particle correlations in the momentum space offers a unique opportunity to access the strong interaction. Hadrons interact via a residual strong force that is unmeasured for most hadron species. The measurement and quantitative understanding of the strong interaction among hadrons are considered to be the frontiers within the standard model of nuclear and particle physics. This is achieved by combining the excellent particle identification of the ALICE detector, the abundant production of many particle species at the LHC and a momentum correlation analysis method. The femtoscopic correlations of particles of various species were measured in pp, p-Pb and Pb-Pb collisions at different energies by the ALICE Collaboration. The comparison of the obtained femtoscopic parameters with various theoretical models of particle interactions allows for improving our understanding of dynamics of matter created in high-energy collisions.