HERA_DIS
========

This is an example of a setup for hadronic final states in deep-inelastic lepton-nucleon scattering at a centre-of-mass energy of 300 GeV. Corresponding measurements were carried out by the H1 and ZEUS collaborations at the HERA collider at DESY Hamburg.

               [file Run.dat not included]

Things to notice:

  * the beams are asymmetric with the positrons at an energy of 27.5 GeV, while the protons carry 820 GeV of energy.

  * the multi-jet merging cut is set dynamically for each event, depending on the photon virtuality, see Carli2009cg.

  * there is a selector cut on the photon virtuality. This cut implements the experimental requirements for idenitfying the deep-inelastic scattering process.

  * parton shower kinematics are optimized for deep-inelastic scattering using the option CSS_KIN_SCHEME 1.