Journal of High Energy Physics

, 2015:159 | Cite as

Central μ + μ production via photon-photon fusion in proton-proton collisions with proton dissociation

  • Gustavo G. da SilveiraEmail author
  • Laurent Forthomme
  • Krzysztof Piotrzkowski
  • Wolfgang Schäfer
  • Antoni Szczurek
Open Access
Regular Article - Theoretical Physics


We present a formalism which uses fluxes of equivalent photons including transverse momenta of the intermediate photons. The formalism reminds the familiar k t -factorization approach used, e.g., to study the two-gluon production of \( c\overline{c} \) or \( b\overline{b} \) pairs. The results of the new method are compared with those obtained using the code lpair, and a good agreement is obtained. The inclusion of the photon transverse momenta is necessary in studies of correlation observables. We present distributions for the dimuon invariant mass, transverse momentum of the muon pair and relative azimuthal angle between muons separately for elastic-elastic, elastic-inelastic, inelastic-elastic and inelastic-inelastic mechanisms. For typical experimental cuts all mechanisms give similar contributions. The results are shown for different sets of cuts relevant for the LHC experiments. The cross sections in different regions of phase space depend on F 2 structure function in different regions of x and Q 2. A comment on F 2 is made.


Deep Inelastic Scattering (Phenomenology) Hadronic Colliders 


Open Access

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Copyright information

© The Author(s) 2015

Authors and Affiliations

  • Gustavo G. da Silveira
    • 1
    • 2
    Email author
  • Laurent Forthomme
    • 1
  • Krzysztof Piotrzkowski
    • 1
  • Wolfgang Schäfer
    • 3
  • Antoni Szczurek
    • 3
    • 4
  1. 1.Centre for Cosmology, Particle Physics and Phenomenology (CP3)Université Catholique de LouvainLouvain-la-NeuveBelgium
  2. 2.High and Medium Energy Group, Instituto de Física e MatemáticaUniversidade Federal de PelotasPelotasBrazil
  3. 3.Institute of Nuclear Physics PANKrakówPoland
  4. 4.University of RzeszówRzeszówPoland

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