RUS | ENG
Joint Institute for Nuclear Research
08.04.2026

A. V. Guskov "The AMBER experiment at CERN"

Quantum Chromodynamics as a theory of the interaction of quarks and gluons is undoubtedly successful and provides a sufficiently reliable description of processes occurring in the interaction of high-energy particles.

However, due to the large value of the strong interaction coupling constant, quantum chromodynamics is unable to describe from first principles the structure, properties, and the spectrum of hadrons — systems built by the strong interaction. This makes experiment the only reliable source of such information.

The seminar will present the physics program, current status, and plans of the AMBER (NA66) experiment at the secondary beam of the SPS proton super synchrotron (CERN). The physics program includes a precise measurement of the electromagnetic radius of the proton, the study of the quark-gluon structure of pions and kaons both in the Drell-Yan process and in the processes of prompt photon and charmonium production, the measurement of the differential cross section of antiproton production in hadron interactions for astrophysics needs, the verification of predictions from phenomenological QCD models in the low-energy region using a kaon beam, as well as the spectroscopy of kaonic states.