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Partonic description of soft high energy pp interactions

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arxiv 1202.4966 v1 pith:T5JJ2IC5 submitted 2012-02-22 hep-ph

classification hep-ph
keywords softdiscussfeatureshigh-energyinteractionsmodelpartonsemihard
verification ladder T0 review T1 audit T2 compute T3 formal
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We discuss how the main features of high-energy `soft' and `semihard' pp collisions may be described in terms of parton cascades and multi-Pomeron exchange. The interaction between Pomerons produces an effective infrared cutoff, k_sat, by the absorption of low k_t partons. This provides the possibility of extending the parton approach, used for `hard' processes, to also describe high-energy soft and semihard interactions. We outline a model which incorporates these features. Finally, we discuss what the most recent LHC measurements in the soft domain imply for the model.

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