Journal of High Energy Physics

, 2015:194 | Cite as

On the impact of lepton PDFs

  • Valerio Bertone
  • Stefano Carrazza
  • Davide Pagani
  • Marco Zaro
Open Access
Regular Article - Theoretical Physics


In this paper we discuss the effect of the complete leading-order QED corrections to the DGLAP equations that govern the perturbative evolution of parton distribution functions (PDFs). This requires the extension of the purely QCD DGLAP evolution including a PDF for the photons and, consistently, also for the charged leptons e ±, μ ± and τ ±. We present the implementation of the QED-corrected DGLAP evolution in the presence of photon and lepton PDFs in the APFEL program and, by means of different assumptions for the initial scale PDFs, we produce for the first time PDF sets containing charged lepton distributions. We also present phenomenological studies that aim to assess the impact of the presence of lepton PDFs in the proton for some relevant SM (and BSM) processes at the LHC at 13 TeV and the FCC-hh at 100 TeV. The impact of the photon PDF is also outlined for those processes.


QCD Phenomenology 


Open Access

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Copyright information

© The Author(s) 2015

Authors and Affiliations

  • Valerio Bertone
    • 1
  • Stefano Carrazza
    • 2
  • Davide Pagani
    • 3
  • Marco Zaro
    • 4
    • 5
  1. 1.PH Department, TH Unit, CERNGeneva 23Switzerland
  2. 2.Dipartimento di Fisica, Università di Milano and INFN — Sezione di MilanoMilanoItaly
  3. 3.Center for Cosmology, Particle Physics and Phenomenology (CP3)Université Catholique de LouvainLouvain-la-NeuveBelgium
  4. 4.Sorbonne Universités, UPMC Univ. Paris 06, UMR 7589, LPTHEParisFrance
  5. 5.CNRS, UMR 7589, LPTHEParisFrance

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