Abstract:
Analysis of Δ0(1232) Production in p+12C and d+12C
Collisions at 4.2 GeV/c Per Nucleon
Production and various properties of Δ0(1232) resonances in p+12C and d+12C
collisions at a momentum of 4.2 GeV/c per nucleon were analyzed. The mass
distributions of 0 (1232)' s in both collision types were reconstructed by analyzing the
experimental and background invariant mass distributions of proton and negative pion
pairs with the help of angular criterion. The emission angle, rapidity, momentum,
transverse momentum, and kinetic energy distributions of
0 (1232)' s
were
reconstructed for both collision types and their mean values extracted. Analyzing the
reconstructed transverse mass spectra of 0 (1232)' s , the freeze-out temperatures of
0 (1232)' s were estimated for both collision types. The parameters and various
characteristics of Δ0(1232) resonances produced in p+12C and d+12C collisions at the
same incident momentum per nucleon were compared with each other to get the
valuable information about the role of the weakly bound neutrons of projectile
deuterons in Δ0(1232) production. The spectral temperatures of 0 (1232)' s produced
in p+12C and d+12C interactions at 4.2 GeV/c per nucleon were extracted by analyzing
the transverse momentum spectra of 0 (1232)' s in the framework of Hagedorn
Thermodynamic Model and compared with the corresponding temperatures of negative
pions in p+12C and d+12C collisions.
