Study of the spectator matter in heavy ion collisions at the BM@N experiment

Oct 15, 2020, 4:25 PM


Oral report Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics. Section 4. Relativistic nuclear physics, elementary particle physics and high-energy physics


Fedor Guber (Russian Academy of Sciences (RU))


The BM@N (Baryonic Matter at Nuclotron) is fixed target experiment to study nucleus-nucleus reactions with the ion beams energies up to 4.5 AGeV. It is supposed to perform differential measurements of the energy, charge composition, transverse momentum and other characteristics of the projectile spectators at the BM@N. These observables would be sensitive to the processes in the dense interaction region because the transit time of an incident nucleus through a target nucleus is comparable to the lifetime of the dense nuclear matter created at these energies. The measurements of spectators would allow to determine the geometry of nuclear collisions (centrality and reaction plane) as well as to understand the mechanisms of fragmentation and the equation of state of nuclear matter.
The BM@N is the most suitable experiment for such a study because it has a powerful analyzing dipole magnet which deflects the charged components of the spectators and partially separates them from the neutron spectators. The measurements of the neutron spectators are proposed to do with new forward hadron calorimeter (FHCal), which is already installed at the BM@N. To measure the heavy charged fragments and proton spectators the quartz and scintillator hodoscopes are under development. The performance of this new forward detector system at the BM@N will be shown.

Primary author

Fedor Guber (Russian Academy of Sciences (RU))

Presentation materials