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- W2893614377 abstract "Many studies of possible new physics employ effective field theory (EFT), whereby corrections to the Standard Model take the form of higher-dimensional operators, suppressed by a large energy scale. Fits of such a theory to data typically use parton level observables, which limits the datasets one can use. In order to theoretically model search channels involving many additional jets, it is important to include tree-level matrix elements matched to a parton shower algorithm, and a suitable matching procedure to remove the double counting of additional radiation. There are then two potential problems: (i) EFT corrections are absent in the shower, leading to an extra source of discontinuities in the matching procedure; (ii) the uncertainty in the matching procedure may be such that no additional constraints are obtained from observables sensitive to radiation. In this paper, we review why the first of these is not a problem in practice, and perform a detailed study of the second. In particular, we quantify the additional constraints on EFT expected from top pair plus multijet events, relative to inclusive top pair production alone." @default.
- W2893614377 created "2018-10-05" @default.
- W2893614377 creator A5047697160 @default.
- W2893614377 creator A5048139332 @default.
- W2893614377 creator A5086270480 @default.
- W2893614377 date "2019-02-15" @default.
- W2893614377 modified "2023-10-17" @default.
- W2893614377 title "Effective field theory in the top sector: Do multijets help?" @default.
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