Theoretical expectations for total cross-sections at the large hadron collider

Abstract

In this note, we summarize and compare various model predictions for $pp$ total cross-section $σ_{\rm tot}^{pp}$, giving an estimate of the range of predictions for the total cross-section, $σ_{\rm tot}^{pp}$ expected at the LHC. We concentrate on the results for $σ_{\tot}^{pp}$ obtained in a particular QCD based model of the energy dependence of the total cross-section, including the effect of soft gluon radiation. We obtain the range of predictions in this model by exploring the allowed range of model parameters. We further give a handy parametrisation of these results which incidentally spans the range of various other available predictions at the LHC as well.