Exclusive electromagnetic production of pion pairs in lead-lead collisions at LHC *
1 The Henryk Niewodniczański Institute of Nuclear Physics PAN, PL-31-342 Kraków
2 University of Rzeszów, PL-35-959 Rzeszów
a e-mail: Mariola.Klusek@ifj.edu.pl
Published online: 20 March 2014
The cross section for π+π− and π0π0 meson pairs production in peripheral ultrarelativistic heavy-ion collisions is calculated in the impact parameter space equivalent photon approximation. The cross section is calculated at the energy available at the CERN Large Hadron Collider, √sNN = 3.5 TeV. For the first time the world data for γγ → ππ are described, both for the total cross section and for the angular distribution. This is obtained simultaneously for γγ → π+π− and γγ → π0π0 at all experimentally available energies.
© Owned by the authors, published by EDP Sciences, 2014