Study of Photon Multiplicity Distribution in the Context of Negative Binomial Distribution

The attempt is made to characterize the photon multiplicity distribution as recorded in Photon Multiplicity Detector (PMD) as a part of the WA98 experiment for Pb-Pb interactions at 158 A GeV in terms of Negative Binomial Distribution. The free parameters n ̅ and k of the negative binomial distribution are optimized using CERN standard program MINIUTE and the errors or the parameters are calculated as given in MINOS software. The results obtained are compared with the predictions of Monte Carlo simulation data using VENUS 4.12.

Quantum dynamics of a qutrit in a cavity filled with Kerr-like medium and intrinsic noise

We study the dynamics of the intrinsic noise (IN) model of a three-level atom (qutrit) in V-configuration. The qutrit is inside an open cavity with a Kerr-like medium. The quantifiers of the atomic population, entanglement and mixedness are evaluated under the physical parameters of the photon multiplicity, IN and the nonlinearity of both the unitary interaction and the Kerr-like medium. It is found that the generated entanglement and mixedness may be enhanced by filling the cavity with a nonlinear medium. The transfer of the energy between the two upper states and the lower state are very sensitive to the physical parameters. The entanglement and mixedness depend on the initial coherent intensity, the IN and the Kerr-like medium.

Photon Multiplicity Distributions at Heavy Ion Au+Au, Pb+Au, Pb+Pb Interactions

The experimental distributions for Heavy ion interaction, Au+Au, Pb+Au, Pb+Pb have been fitted to polynomial fit of 4th order to look at minor differences in multiplicity distributions for different targets at heavy ion collisions experiment. The multiplicity distributions found similar; except for small differences which may be of statistical in nature. This analysis supports the hypothesis that geometrical aspects play a dominant role in particle production in heavy ion interactions.

ENERGY AND SYSTEM SIZE DEPENDENCE OF PHOTON PRODUCTION AT FORWARD RAPIDITIES AT RHIC

The energy and system size dependence of pseudorapidity (η) and multiplicity distributions of photons are measured in the region −2.3 ≤ η ≤ −3.7 for Cu + Cu collisions at [Formula: see text] and 62.4 GeV. Photon multiplicity measurements at forward rapidity have been carried out using a Photon Multiplicity Detector (PMD) in the STAR experiment. Photons are found to follow longitudinal scaling for Cu + Cu collisions for 0–10% centrality. A Comparison of pseudorapidity distributions with HIIJING model is also presented.