Nuclear \(\gamma\)-radiation as a signature of ultra-peripheral ion collisions at the LHC

  • Yu V. Kharlov
  • V. L. KorotkikhEmail author


We study the peripheral ion collisions at LHC energies where a nucleus is excited to a discrete state and then emits \(\gamma\)-rays. Large nuclear Lorenz factors allow the observation of high-energy photons up to a few tens GeV and in the angular region of a few hundred micro-radians from the beam direction. These photons can be used to tagg events with particle production in the central rapidity region in ultra-peripheral collisions. To detect these photons it is necessary to have an electromagnetic detector in front of the zero-degree calorimeter in LHC experiments.


Radiation Calorimeter Rapidity Region Central Rapidity Beam Direction 
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Copyright information

© Springer-Verlag Berlin/Heidelberg 2004

Authors and Affiliations

  1. 1.Institute for High Energy PhysicsProtvinoRussia
  2. 2.Scobeltsyn Institute of Nuclear PhysicsMoscow State UniversityMoscowRussia

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