Angular correlations in single-top-quark and W-jj production at next-to-leading order

作者：Sullivan Z^*

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2005, 72(9): 094034.

DOI：10.1103/PhysRevD.72.094034

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.

• 出版日期2005-11