<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow><mml:mi>Δ</mml:mi></mml:mrow><mml:mn>0</mml:mn></mml:msup></mml:math>(1232) production in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>d</mml:mi></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow/><mml:mn>12</mml:mn></mml:msup></mml:math>C collisions at 4.2<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>A</mml:mi></mml:math>GeV/<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>c</mml:mi></mml:math>
Аннотация
Production of ${\ensuremath{\Delta}}^{0}$(1232) resonances in $d$ + ${}^{12}$C collisions at 4.2$A$ GeV/$c$ was investigated with $4\ensuremath{\pi}$ acceptance, for the first time. The mass distribution of ${\ensuremath{\Delta}}^{0}$(1232) resonances produced in $d$ + ${}^{12}$C collisions was reconstructed and their mass and width were extracted. The kinematical distributions of ${\ensuremath{\Delta}}^{0}$(1232) were reconstructed in the laboratory frame and the corresponding mean kinematical characteristics were estimated. The fraction of charged \ensuremath{\pi}${}^{\ensuremath{-}}$ mesons coming from ${\ensuremath{\Delta}}^{0}$(1232) decay as well as the relative number of nucleons excited to ${\ensuremath{\Delta}}^{0}$(1232) in freeze-out conditions were estimated. The freeze-out temperature of ${\ensuremath{\Delta}}^{0}$(1232) was estimated and compared to results of other experiments with different sets of colliding nuclei and various incident energies.