Mapping color fluctuations in the photon in ultraperipheral heavy ion collisions at the Large Hadron Collider

Alvioli M.(1); Frankfurt L.(2); Guzey V.(3); Strikman M.(4); Zhalov M.(3), 2017, Mapping color fluctuations in the photon in ultraperipheral heavy ion collisions at the Large Hadron Collider, Physics letters. B (Print) 767 (2017): 450–457. doi_10.1016/j.physletb.2017.02.034,
URL: http://www.cnr.it/prodotto/i/368546

We model effects of color fluctuations (CFs) in the light-cone photon wave function and for the first time make predictions for the distribution over the number of wounded nucleons ? in the inelastic photon- nucleus scattering. We show that CFs lead to a dramatic enhancement of this distribution at ? = 1 and large ? > 10. We also study the implications of different scales and CFs in the photon wave function on the total transverse energy sum E_T and other observables in inelastic ? A scattering with different triggers. Our predictions can be tested in proton-nucleus and nucleus-nucleus ultraperipheral collisions at the LHC and will help to map CFs, whose first indications have already been observed at the LHC.

Dati tratti da https://intranet.cnr.it/people/