Bottomonium Suppression at LHC Energy Based on the Temperature Dependent Formation Time

摘要

We present a model to explain the bottomonium suppression observed in Pb+Pb collisions at Large Hadron Collider (LHC) energy, {formula} = 2.76TeV. A quasi-particle model (QPM) equation of state (EOS) for the Quark-Gluon Plasma (QGP) expanding under Bjorken's scaling law at mid rapidity is employed. The present work incorporates the formation time based on the temperature of QGP, color screening during bottomonium production, gluon induced dissociation and collisional damping. The cold nuclear matter (CNM) effects, decay of higher resonances of bottomonium have also been included in the current work. The final suppression of the bottomonium states at mid rapidity is plotted as a function of centrality. Our results show reasonably good agreement with the recent centrality dependent bottomonium suppression data in the mid rapidity region obtained from CMS experiment at Large Hadron Collider (LHC).