We report the results of charged kaon Bose–Einstein Correlations (BEC) measured in protonproton collisions at √ s =200 and 510 GeV with the STAR detector at Relativistic Heavy Ion Collider (RHIC). The one-dimensional correlation functions are studied as a function of the charged particle multiplicity. The femtoscopic radii, R, and the correlation strength, λ, are extracted. The dependence of th...

We present results on charged particle (dNch/dη) and transverse energy densities (dET/dη) measured at mid-rapidity in Au-Au collisions at √ s NN =200 GeV. The mean transverse energy per charged particle is derived. The results are presented as a function of centrality, which is defined by the number of participating nucleons (Np), and compared to results obtained in Au-Au collisions at √ s NN =...

We examine the colour structure and charged particle yield for both the tt̄ signal and the irreducible background processes contributing to e+e− → bb̄W+W− production close to the tt̄ threshold. The charged particle multiplicity for the various components of the cross section is computed as a function of several kinematic variables. Our study may have important implications for recently proposed st...

We solve exactly the classical non-relativistic Landau–Lifshitz equations of motion for a charged particle moving in a Coulomb potential, including radiation damping. The general solution involves the Painlevè transcendent of type II. It confirms our physical intuition that a negatively charged classical particle will spiral into the nucleus, supporting the validity of the Landau–Lifshitz equat...