Forward ${\pi }^0$ trigger of the deep inelastic + jet probe of BFKL dynamics

Abstract

We predict the rate of deep inelastic scattering (DIS) events containing an identified forward ${\pi }^0$ that is expected in the experiments at the HERA electron-proton collider, in order to see if this process can be used as an indicator of the underlying small $x$ dynamics. We determine the background due to deep inelastic events containing forward photons which are fragments of the forward jet. We compare the DIS + ${\pi }^0$ cross section with that of the DIS + parent jet process.

Comments: 12 pages, Latex, 6 ps figures. Version to be published in Phys. Rev. D with footnote added to point out that experimental cuts can be chosen to give an enhanced DIS + ${\pi }^0$ signal