Angular correlations in single-top-quark andWjjproduction at next-to-leading order
Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology2005Vol. 72(9)
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Abstract
I demonstrate that the correlated angular distributions of final-state particles in both single-top-quark production and the dominant $Wjj$ backgrounds can be reliably predicted. Using these fully correlated angular distributions, I propose a set of cuts that can improve the single-top-quark discovery significance by 25%, and the signal to background ratio by a factor of 3 with very little theoretical uncertainty. Up to a subtlety in $t$-channel single-top-quark production, leading-order matrix elements are shown to be sufficient to reproduce the next-to-leading order correlated distributions.
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