Drell–Yan as a probe of small x partons at the LHC

  • E. G. de Oliveira
  • A. D. MartinEmail author
  • M. G. Ryskin
Regular Article - Theoretical Physics


The predictions of Drell–Yan production of low-mass lepton pairs, at high rapidity at the LHC, are known to depend sensitively on the choice of factorization and renormalization scales. We show how this sensitivity can be greatly reduced by fixing the factorization scale of the LO contribution based on the known NLO matrix element, so that observations of this process at the LHC can make direct measurements of parton distribution functions in the low x domain; x≲10−4.


Momentum Fraction DGLAP Evolution NNLO Contribution Hard Matrix Element Renormalization Scale Ambiguity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



We thank Ronan McNulty for useful discussions. EGdO and MGR thank the IPPP at the University of Durham for hospitality. This work was supported by the grant RFBR 11-02-00120-a and by the Federal Program of the Russian State RSGSS-65751.2010.2; and by FAPESP (Brazil) under contract 2011/50597-8.


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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2012

Authors and Affiliations

  • E. G. de Oliveira
    • 1
    • 2
  • A. D. Martin
    • 1
    Email author
  • M. G. Ryskin
    • 1
    • 3
  1. 1.Institute for Particle Physics PhenomenologyUniversity of DurhamDurhamUK
  2. 2.Instituto de FísicaUniversidade de São PauloSão PauloBrazil
  3. 3.Petersburg Nuclear Physics InstituteNRC Kurchatov InstituteSt. PetersburgRussia

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