Formation of Δ0-izobar in nC-collisions at 4.2 GeV/c

Authors

  • Rahmatillo N. Bekmirzaev Jizzax State Pedagogical Institute
  • Xursand U. Bekmirzaeva Jizzax State Pedagogical Institute
  • Gulmurod U. Khudoyberdiev Jizzax State Pedagogical Institute
  • Marjona I. Mustafayeva Jizzax State Pedagogical Institute
  • Bahodir E. Nabiev Jizzax State Pedagogical Institute

DOI:

https://doi.org/10.33910/2687-153X-2020-1-3-123-126

Keywords:

hadron and nucleus-nucleus collisions, Δ0-isobar, π−-mesons, effective proton masses, accelerator, propane chamber, carbon

Abstract

The study is dedicated to the multiplicity of momentum and angular characteristics of protons formed in nC-collisions at a pulse of 4.2 GeV/c. The experimental results on the formation of Δ0 isobars in nC-collisions at 4.2 GeV/c are presented for the first time. Experimental and normalised background distribution of the effective mass for protons and π-mesons was obtained. This study is a follow-up to prior research. It explores various kinematic characteristics of π-mesons formed in nC-collisions at 4.2 GeV/c. The data obtained are compared with the experimental data obtained for pA interactions at the same energy. The experimental material used in this work was obtained using a 2-meter propane bubble chamber of the JINR LHE irradiated with beams of proton, deuteron and helium-4 nuclei at a pulse of 4.2 GeV/c per nucleon at the Dubna Synchrophasotron and consists of 6736 pC, 7071 dC and 11974 4HeC events. Negative π mesons are identified visually by the charge sign only.

References

Iqbal, A., Olimov, K. K., Khan, I., Yuldashev, B. S., Haseeb, M. Q. (2014) On centrality and rapidity dependences of transverse momentum spectra of negative pions in 12C + 12C collisions at 4.2 GeV/c per nucleon. International Journal of Modern Physics E: Nuclear Physics, 23 (09), article 1450047. DOI: 10.1142/S0218301314500475 (In English)

Nakamura, K., Hagiwara, K., Hikasa, K. et al. (Particle data group) (2010) Review of particle physics. Journal of Physics G: Nuclear and Particle Physics, 37 (7), article 075021. DOI: 10.1088/0954-3899/37/7A/075021 (In English)

Olimov, K., Lutpullaev, S. L., Olimov, Kh. K. et al. (2011) Production of multibaryon clusters in hadron-nucleus collisions at high energies. Physics of Atomic Nuclei, 74 (1), 98–102. DOI: 10.1134/S1063778811010121 (In English)

Olimov, Kh. K., Lutpullaev, S. L., Olimov, K., Gulamov, K. G., Olimov, J. K. (2007) Production of Δ0 and Δ++ resonances in collisions of 4He nuclei with carbon nuclei at 4.2 GeV/c per nucleon. Physical Review C: Covering Nuclear Physics, 75 (6), article 067901. DOI: 10.1103/PhysRevC.75.067901 (In English)

Olimov, Kh. K., Haseeb, M. Q., Khan, I., Olimov, A. K., Glagolev, V. V. (2012) Δ0 (1232) production in d + 12C collisions at 4.2 A GeV/c. Physical Review C: Covering Nuclear Physics, 85 (1), article 014907. DOI: 10.1103/ PhysRevC.85.014907 (In English)

Published

2020-09-21

Issue

Section

Physics of the Atomic Nucleus and Elementary Particles