Proceedings of the First International Workshop on Multiple Partonic Interactions at the LHC (MPI08)

TL;DR

This workshop highlights the importance of Multiple Partonic Interactions (MPI) at the LHC, emphasizing their role in explaining collider phenomena and advancing Monte Carlo modeling to improve understanding of LHC physics.

Contribution

It consolidates MPI research, promotes collaboration between theory and experiment, and discusses the integration of MPI effects into sophisticated Monte Carlo models for LHC analyses.

Findings

MPI models are increasingly sophisticated and impactful for LHC physics.

MPI effects explain key phenomena like the Underlying Event and multiple heavy flavor production.

Workshop fosters collaboration and unification of MPI research lines.

Abstract

The objective of this first workshop on Multiple Partonic Interactions (MPI) at the LHC is to raise the profile of MPI studies, summarizing the legacy from the older phenomenology at hadronic colliders and favouring further specific contacts between the theory and experimental communities. The MPI are experiencing a growing popularity and are currently widely invoked to account for observations that would not be explained otherwise: the activity of the Underlying Event, the cross sections for multiple heavy flavour production, the survival probability of large rapidity gaps in hard diffraction, etc. At the same time, the implementation of the MPI effects in the Monte Carlo models is quickly proceeding through an increasing level of sophistication and complexity that in perspective achieves deep general implications for the LHC physics. The ultimate ambition of this workshop is to promote the MPI as unification concept between seemingly heterogeneous research lines and to profit of the complete experimental picture in order to constrain their implementation in the models, evaluating the spin offs on the LHC physics program.