München 2009 – scientific programme

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T: Fachverband Teilchenphysik

T 30: QCD 4

T 30.1: Talk

Friday, March 13, 2009, 14:00–14:15, A017

Study of Minimum Bias events at the LHC with an updated Phojet — Ralph Engel¹, •Sami Kama², and Klaus Moenig² — ¹FZK, Karlsruhe — ²DESY, Zeuthen

Soft partonic interactions, minimum bias events, were always an interesting topic in high energy proton-proton and proton-antiproton interactions. With the advent of the LHC, understanding of minimum bias events will be the key for the analysis of other processes since about 25 minimum bias events are expected to happen at every 14 TeV pp bunch crossing at the full luminosity. Although current models can describe the previous data, extrapolation of this models to the observations from astroparticle experiments show some discrepancies from observations. Study of the minimum bias events at the LHC will also provide an important chance to tune such models. One such model, the Dual Parton Model(DPM), is the combination of Regge theory with perturbative and the non-perturbative QCD expansions. PHOJET is a Monte-Carlo program which uses the two-component DPM to describe minimum bias events. Here we will present the updates to PHOJET and the study of minimum bias events at LHC energies using an updated version of PHOJET.