Challenges for QCD theory: some personal reflections

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Abstract

At the LHC all processes are QCD ones, whether 'signal' or 'background'. In this review the frontiers of current QCD research are addressed, towards increased understanding, improved calculational precision, and role in potential future discoveries. Issues raised include: the limits of perturbative QCD calculations and parton distribution usage, the nature of multiparton interactions, the impact of colour reconnection on physical observables, the need for progress on hadronization modelling, the improvements of parton showers and their combination with the matrix-element description, the use of QCD concepts in Beyond-the-Standard-Model scenarios and the key position of event generators and other software in the successful exploration of LHC physics. On the way, several questions are posed, where further studies are needed.

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  • Subatomic Physics
Original languageEnglish
Article number014002
JournalPhysica Scripta
VolumeT158
Publication statusPublished - 2013
Publication categoryResearch
Peer-reviewedYes
EventNobel Symposium on LHC results - Kruseberg herrgård, Uppsala, Sweden
Duration: 2013 May 132013 May 17

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