Jet-parton inelastic interaction beyond eikonal approximation

Most of the models of jet quenching generally assumes that a jet always travels in a straight eikonal path, which is indeed true for sufficiently hard jet but may not be a good one for moderate and low momentum jet. In this article an attempt has been made to relax part of this approximation for 2 -> 3 processes and found a (15-20)% suppression in the differential cross section for moderately hard jets because of the noneikonal effects. In particular, for the process qq' -> qq'g in the centre of momentum frame the scattering with an angle wider than +/- 0.52 pi is literally forbidden unlike the process gg -> ggg that allows an angular range +/-pi. This may have consequence on the suppression of hadronic spectra at low transverse momenta. DOI: 10.1103/PhysRevD.87.034036