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Hard interactions of quarks and gluons: a primer for LHC physics

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J M Campbell1, J W Huston2 and W J Stirling3

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In this paper, we will develop the perturbative framework for the calculation of hard-scattering processes. We will undertake to provide both a reasonably rigorous development of the formalism of hard-scattering of quarks and gluons as well as an intuitive understanding of the physics behind the scattering. We will emphasize the role of logarithmic corrections as well as power counting in αS in order to understand the behaviour of hard-scattering processes. We will include 'rules of thumb' as well as 'official recommendations', and where possible will seek to dispel some myths. We will also discuss the impact of soft processes on the measurements of hard-scattering processes. Experiences that have been gained at the Fermilab Tevatron will be recounted and, where appropriate, extrapolated to the LHC.


PACS

13.85.Qk Inclusive production with identified leptons, photons, or other nonhadronic particles

12.38.Bx Perturbative calculations

13.87.Ce Production

01.30.Rr Surveys and tutorial papers; resource letters

14.70.Dj Gluons

14.65.-q Quarks

Subjects

Education and communication

Particle physics and field theory

Dates

Issue 1 (January 2007)

Received 14 July 2006, in final form 6 November 2006

Published 19 December 2006



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