MC REALIZATION OF IR-IMPROVED DGLAP-CS PARTON SHOWERS: HERWIRI1.031

We introduce the new IR-improved Dokshitzer–Gribov–Lipatov–Altarelli–Parisi–Callan–Symanzik (DGLAP-CS) kernels recently developed by one of us into the HERWIG6.5 to generate a new MC, HERWIRI1.0(31), for hadron–hadron scattering at high energies. We use MC data to compare the parton shower generated by the standard DGLAP-CS kernels and that generated by the new IR-improved DGLAP-CS kernels. The seamless interface to MC@NLO, MC@NLO/HERWIRI, is illustrated. We show comparisons with FNAL data and discuss some possible LHC phenomenology implications.