Search for Scalar Top Admixture in the T Anti-T Lepton+Jets Channel at D0.

Park, S. J.

Technical Information Center Oak Ridge Tennessee

关键词: Leptons;    Jet model;    Tevatron;    Quarks;    Cross sections;   

RP-ID  :  DE2008917428

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We study the behavior of the isovector scalar correlator, which is particularly sensitive to lattice artifacts, using domain-wall valence quarks on a staggered sea (generated by the MILC collaboration). We analyze this according to the prediction from chiral perturbation theory determined by Prelovsek, which indicates that the leading unitarity violations come from taste breaking effects. We show that our data behaves in the way predicted by Prelovsek, thus verifying that the largest contribution to the violations of unitarity which arise at finite lattice spacing can be described by the mixed-action chiral perturbation theory.