From the start of the experimental activity of the Large Hadron Collider, Multiple Partonic Interactions (MPI) are experiencing a growing popularity and are widely invoked to account for observations that cannot be explained otherwise. This includes associated hadron production (Underlying Event) in high-energy hadronic collisions, the rates for multiple heavy flavor production, the survival probability of large rapidity gaps in hard diffraction, etc. In particular Double Parton Interactions were observed directly and studied by a number of the FNAL and LHC experiments in different reaction channels. A recently introduced working group does focus on the study of high multiplicity final states in pp and pA interactions, where correlations in soft MPI may give rise to flow-like effect.
At the LHC a new QCD regime has now been reached, where MPIs occur with high rates. Understanding MPIs is therefore crucial, both for their significant contribution to the background of various processes of interest for the search of new physics and because MPIs are an interesting topic of research by itself, allowing to probe high energy - high density QCD dynamics and, as a consequence of the geometrical characteristics of the interaction, to obtain unprecedented information on the correlated structure of the QCD bound states.
The aim of this workshop is to provide an updated view of MPI studies, both experimental and theoretical, and to foster contacts between theoretical and experimental communities active in the field.
Organizers
Gabriel Ascencio (CIMSUR)
Paolo Bartalini (CCNU)
Eleazar Cuautle (UNAM)
Arturo Fernández (BUAP)
Antonio Ortiz (UNAM)
Guy Paić (UNAM)
Lizardo Valencia (UNACH)
Arnulfo Zepeda (MCTP)
International Advisory Board
Paolo Bartalini (China Central Normal University)
Jonathan Butterworth (UC London)
Markus Diehl (DESY)
Livio Fanò (University of Perugia, INFN)
Richard Field (University of Florida)
Hannes Jung (DESY, University of Antwerp)
Judith Katzy (DESY)
Frank Krauss (IPPP Durham)
Krzysztof Kutak (IFJ PAN Kraków)
Michelangelo Mangano (CERN)
Arthur Moraes (Centro Brasileiro de Pesquisas Físicas)
Andreas Morsch (CERN)
Antonio Ortiz (Universidad Nacional Autónoma de México)
Guy Paić (Universidad Nacional Autónoma de México)
Giulia Pancheri (INFN Frascati Nat. Lab.)
Michael Schmelling (MPIK Heidelberg)
Torbjorn Sjöstrand (Lund University)
Peter Skands (Monash University)
Mark Strikman (Pennsylvania State University)
Antoni Szczurek (IFJ PAN Kraków)
Daniele Treleani (University of Trieste, INFN)
Pierre van Mechelen (University of Antwerp)
Nick van Remortel (University of Antwerp)