Jump to ContentJump to Main Navigation
Deep Inelastic Scattering$
Users without a subscription are not able to see the full content.

Robin Devenish and Amanda Cooper-Sarkar

Print publication date: 2003

Print ISBN-13: 9780198506713

Published to Oxford Scholarship Online: January 2010

DOI: 10.1093/acprof:oso/9780198506713.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 23 April 2021

QCD improved parton model

QCD improved parton model

(p.69) 4 QCD improved parton model
Deep Inelastic Scattering

Robin Devenish

Amanda Cooper-Sarkar

Oxford University Press

The QCD improved parton model provides the foundation on which all the remaining chapters are based. This chapter begins by covering the key ideas: tree level QCD Compton and boson-gluon fusion processes give rise to characteristic gluonic ‘radiative corrections’ to the QPM; infrared singularities are absorbed by renormalizing the parton densities, which thus become Q2 dependent and no longer satisfy exact Bjorken scaling. The next section covers the DGLAP evolution equations, which enable the Q2 dependence to be calculated perturbatively using ‘splitting functions’. To give an insight into the effect of these equations, some simple numerical examples are given in the following section. The relationship between the more formal Operator Product Expansion method outlined in the previous chapter and the DGLAP approach is indicated. The last three sections comment on: higher twist; the extension of the DGLAP formalism to accommodate heavy quarks; and the extension of the DGLAP formalism to higher orders.

Keywords:   QCD, parton model, radiative corrections, infrared singularities, DGLAP evolution equations, splitting functions, coefficient functions, Operator Product Expansion, higher twist, heavy quarks

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .