6,791 research outputs found
Transverse Momentum Distribution and Elliptic Flow of Charged Hadrons in + collisions at GeV using HYDJET++
Recent experimental observations of the charged hadron properties in
collisions at GeV contradict many of the theoretical models of particle
production including two-component Monte Carlo Glauber model. The experimental
results show a small correlation between the charged hadron properties and the
initial geometrical configurations (e.g. body-body, tip-tip etc.) of
collisions. In this article, we have modified the Monte Carlo HYDJET++ model to
study the charged hadron production in collisions at GeV
center-of-mass energy in tip-tip and body-body initial configurations. We have
modified the hard as well as soft production processes to make this model
suitable for collisions. We have calculated the pseudorapidity
distribution, transverse momentum distribution and elliptic flow distribution
of charged hadrons with different control parameters in various geometrical
configurations possible for collision. We find that HYDJET++ model
supports a small correlation between the various properties of charged hadrons
and the initial geometrical configurations of collision. Further, the
results obtained in modified HYDJET++ model regarding and
elliptic flow () suitably matches with the experimental data of
collisions in minimum bias configuration.Comment: 29 pages, 25 figures. Accepted for Publication in EPJ
Thermoelastic Contact Problem of an Elastic Layer Resting on an Elastic Foundation
This paper gives an analysis of the distribution stress in an infinite isotropic elastic layer, which rests on a semi-infinite isotropic elastic foundation and is indented by a rigid heated punch. The thermal and elastic properties of the layer and foundation are assumed to be different. Two problems are discussed. In the first problem the punch is a flat ended circular cylinder of unit radius, while in the second it is of conical shape. The problems are first reduced to dual integral equations, which are reduced to two Fredholm integral equations of the second kind. Iterative solutions of these equations are obtained for large value of h. Expressions for quantities of physical interest are derived
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