Global fit of top quark effective theory to data
Global fit of top quark effective theory to data
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DOI：
10.1103/physrevd.92.091501
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发表时间：
2015-06
影响因子：
5
通讯作者：
Andy Buckley;C. Englert;J. Ferrando;David J. Miller;L. Moore;Michael J. Russell;C. White
中科院分区：
文献类型：
--
作者：
Andy Buckley;C. Englert;J. Ferrando;David J. Miller;L. Moore;Michael J. Russell;C. White
In this paper we present a global fit of beyond the Standard Model (BSM) dimension six operators relevant to the top quark sector to currently available data. Experimental measurements include parton-level top-pair and single top production from the LHC and the Tevatron. Higher order QCD corrections are modelled using differential and global K-factors, and we use novel fast-fitting techniques developed in the context of Monte Carlo event generator tuning to perform the fit. This allows us to provide new, fully correlated and model-independent bounds on new physics effects in the top sector from the most current direct hadron-collider measurements in light of the involved theoretical and experimental systematics. As a by-product, our analysis constitutes a proof-of-principle that fast fitting of theory to data is possible in the top quark sector, and paves the way for a more detailed analysis including top quark decays, detector corrections and precision observables.
