First measurements at LHC: early hadronic physics (soft + QCD) with ALICE, ATLAS, CMS, TOTEM and LHCb

Some hadronic physics topics that can be studied by the various LHC experiments during the LHC commissioning period are presented. An educated guess of the LHC commissioning scenario is used, based on the assumption that during commissioning up to the highest energy (14 TeV) some data will be collected at 900 GeV. The importance of the first data samples, in particular a sample representing only a few hours of collisions at 900 GeV, in terms of early physics, is discussed in the framework of non-perturbative QCD, the issue of parton overlap. Some aspects of the strong interaction, in terms of early jet measurements, baryon production, as well as the production of charm and beauty quarks, are also briefly mentioned.