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arXiv · 1012.2653

HERWIRI1.031: New Approach to Parton Shower MC's in Precision QCD Theory

B. F. L. Ward·S. A. Yost
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Abstract

The new IR-improved Dokshitzer-Gribov-Lipatov-Altarelli-Parisi-Callan-Symanzik (DGLAP-CS) kernels recently developed by one of us is implemented in the HERWIG6.5 environment to generate a new MC, HERWIRI1.0(31), for hadron-hadron scattering at high energies. The comparison between the parton shower generated by the standard DGLAP-CS kernels and that generated by the new IR-improved DGLAP-CS kernels is illustrated using MC data. This is done for some of the respective exact {\cal O}(\alpha_s) corrected spectra using the seamless interfaces to MC@NLO while making comparisons with FNAL data. Some discussion of possible implications for LHC phenomenology is also presented.

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B. F. L. Ward, S. A. Yost. 2010-12-13. HERWIRI1.031: New Approach to Parton Shower MC's in Precision QCD Theory. https://arxiv.org/abs/1012.2653

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