Diphoton production at Tevatron in the quasi-multi-Regge-kinematics approach

Understand

We study the production of prompt diphotons in the central region of rapidity within the framework of the quasi-multi-Regge-kinematics approach applying the hypothesis of quark and gluon Reggeization.

• We describe accurately and without free parameters the experimental data which were obtained by the CDF Collaboration at the Tevatron Collider.
• It is shown that the main contribution to studied process is given by the direct fusion of two Reggeized gluons into a photon pair, which is described by the effective Reggeon-Reggeon to particle-particle vertex.
• The contribution from the annihilation of Reggeized quark-antiquark pair into a diphoton is also considered.