Inelasticity in Nucleon-Nucleon and Nucleon-Nucleus Collision : Particles and Fields

概要

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Full Monte Carlo simulation of nuclear interactions was performed for energy dependence study of the inelasticity for charged particles in nucleon-nucleon and nucleon-nucleus collision using collider experimental data (CERN and Fermilab) and two different types of interaction models (Fire Tube and Minijet) for parametrization of pseudo-rapidity density distribution at large values of the pseudo-rapidity (∣η∣ > 5). It was found that for both parametrizations the inelasticity in pp^^- collision decreases when energy increases and for proton-air nucleus the inelasticity has also a moderate decrease with the energy. However for proton-nucleus the inelasticity has a strong sensitivity with the mass number of the nucleus. Using our calculations for charged particles and statistical criterions we estimate the energy dependence on the total inelasticity for proton-air nucleus; our results are in good agreement with results obtained using the relation K_<p-air>=A^δK_<pp>-(A=14.5,δ=0.1) where K_<pp>^- is obtained with experimental data of the UA7 Collaboration in the forward region.
理論物理学刊行会の論文
1992-07-25