Monte-Carlo models predictions for centrality dependence of K<sup>*</sup>(892)<sup>0</sup> mesons in Au–Au and Cu–Cu collisions at RHIC energies
Oral-In-person · Withdrawn
Abstract
In the present paper, we have reported the production of K*(892)0 mesons in different centrality classes within the
transverse momentum range of 0 < pT < 5 GeV/c for Au–Au and 0 < pT < 3.5 GeV/c for Cu–Cu collision. This analysis
considers the mid-rapidity region of |y|< 0.5 and the collision energies of 62.4 and 200 GeV. We have also calculated the nuclear
modification factor RCP (central to peripheral) for K*(892)0, Ks0(310) mesons and λ baryon at different energies. For the production
of K*(892)0 mesons, we have used PYTHIA 8.3 Monte-Carlo simulation code including the color reconnection modes, CR mode 1
and CR mode 2 of PYTHIA. We have compared the resulting simulated data with experimental data from Solenoid tracker at RHIC
experiment. In comparison with the PYTHIA8 and CR1 mode yields, PYTHIA CR2 mode gives good estimate of STAR data for
K*(892)0 mesons production across various centrality classes. There is a good estimate between PYTHIA CR2 and STAR data for
high centrality classes while default PYTHIA8 predictions deviate more from STAR data as the centrality increases. The behavior
of the nuclear modification factor, RCP , for the K*(892)0 meson at both 62.4 GeV and 200 GeV is well explained by the CR2 mode.
The default PYTHIA8 predictions for Ks0(310) meson for RCP are fairly in close agreement to the STAR data. The ratio of strange
to non-strange particles (K*(892)0 /π + ) is also predicted by PYTHIA model for Cu–Cu and Au–Au collisions at RHIC energies.
Furthermore, an assessment for the relative abundance of considered mesons is also performed across Cu–Cu and Au–Au collisions.
transverse momentum range of 0 < pT < 5 GeV/c for Au–Au and 0 < pT < 3.5 GeV/c for Cu–Cu collision. This analysis
considers the mid-rapidity region of |y|< 0.5 and the collision energies of 62.4 and 200 GeV. We have also calculated the nuclear
modification factor RCP (central to peripheral) for K*(892)0, Ks0(310) mesons and λ baryon at different energies. For the production
of K*(892)0 mesons, we have used PYTHIA 8.3 Monte-Carlo simulation code including the color reconnection modes, CR mode 1
and CR mode 2 of PYTHIA. We have compared the resulting simulated data with experimental data from Solenoid tracker at RHIC
experiment. In comparison with the PYTHIA8 and CR1 mode yields, PYTHIA CR2 mode gives good estimate of STAR data for
K*(892)0 mesons production across various centrality classes. There is a good estimate between PYTHIA CR2 and STAR data for
high centrality classes while default PYTHIA8 predictions deviate more from STAR data as the centrality increases. The behavior
of the nuclear modification factor, RCP , for the K*(892)0 meson at both 62.4 GeV and 200 GeV is well explained by the CR2 mode.
The default PYTHIA8 predictions for Ks0(310) meson for RCP are fairly in close agreement to the STAR data. The ratio of strange
to non-strange particles (K*(892)0 /π + ) is also predicted by PYTHIA model for Cu–Cu and Au–Au collisions at RHIC energies.
Furthermore, an assessment for the relative abundance of considered mesons is also performed across Cu–Cu and Au–Au collisions.
–
Publication: In the future, I aim to work on more advanced and sophisticated Monte Carlo models to further enhance the accuracy and scope of my research.
Presenters
-
Alamgir Khan
- International Islamic University