Regular Article - Theoretical Physics
Large extra dimension effects through light-by-light scattering at the CERN LHC
Institute of Theoretical Physics, School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian , 116024, People’s Republic of China
Accepted: 10 July 2014
Published online: 2 August 2014
Observing light-by-light scattering at the large hadron collider (LHC) has received quite some attention and it is believed to be a clean and sensitive channel to possible new physics. In this paper, we study the diphoton production at the LHC via the process through graviton exchange in the large extra dimension (LED) model. Typically, when we do the background analysis, we also study the double Pomeron exchange of production. We compare its production in the quark–quark collision mode to the gluon–gluon collision mode and find that contributions from the gluon–gluon collision mode are comparable to the quark–quark one. Our result shows, for extra dimension , with an integrated luminosity at the 14 TeV LHC, that diphoton production through graviton exchange can probe the LED effects up to the scale for the forward detector acceptance , respectively, where , , and .
© SIF and Springer-Verlag Berlin Heidelberg, 2014