Low-$p_{T}$ proton-proton physics at low luminosity at LHC

This review of low-p/sub T/ proton-proton physics at low luminosity at the Large Hadron Collider (LHC) should cover all LHC experiments, but in practice, is mainly related to ALICE, for reasons which will be explained. However, the relevance to other LHC experiments is clear, as low-p/sub T/ phenomena represent an important component of the background to their high-p/sub T/ phenomena which needs to be calibrated. The ALICE collaboration will study proton-proton collisions as part of their heavy-ion programme, where most signals are relative to the proton-proton system. In addition, the ALICE detector's unique acceptance at low p/sub T/ as well as its unique particle identification capability will make it possible to carry out a program of genuine proton-proton physics complementary to those of other LHC experiments. (7 refs).