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QCD Radiation in the Production of High S-hat Final States

出版	United States. Department of Energy, 2005
URL	http://books.google.com.hk/books?id=fMSQnQAACAAJ&hl=&source=gbs_api

註釋In the production of very heavy final states--high Mandelstam {cflx s}--extra QCD radiation can play a significant role. By comparing several different parton shower approximations to results obtained with fixed-order perturbation theory, they quantify the degree to which these approaches agree (or disagree), focusing on initial state radiation above p{perpendicular} = 50 GeV, for top pair production at the Tevatron and at the LHC, and for SUSY pair production at the LHC. Special attention is paid to ambiguities associated with the choice of the maximum value of the ordering variable in parton shower models.