HERWIRI1.0(31): MC Realization of IR-Improvement for DGLAP-CS Parton Showers

Abstract

We have implemented the new IR-improved Dokshitzer-Gribov-Lipatov-Altarelli-Parisi-Callan-Symanzik (DGLAP-CS) kernels recently developed by one of us in the HERWIG6.5 environment to generate a new MC, HERWIRI1.0(31), for hadron-hadron scattering at high energies. We present MC data that illustrate the comparison between the parton shower generated by the standard DGLAP-CS kernels and that generated by the new IR-improved DGLAP-CS kernels. We also show comparisons with FNAL data and we discuss possible implications for LHC phenomenology.

8 pages, 10 figures. To be published in the proceedings of DPF-2009, Detroit, MI, July 2009, eConf C090726; typo corrected, references improved; improved text, improved figures; improved text, improved figures