325 research outputs found
Energy-energy correlation in electron-positron annihilation at NNLL+NNLO accuracy
We present the computation of energy-energy correlation in
collisions in the back-to-back region at next-to-next-to-leading logarithmic
accuracy matched with the next-to-next-to-leading order perturbative
prediction. We study the effect of the fixed higher order corrections in a
comparison of our results to LEP and SLC data. The next-to-next-to-leading
order correction has a sizable impact on the extracted value of
, hence its inclusion is mandatory for a precise
measurement of the strong coupling using energy-energy correlation.Comment: 24 pages, 7 figures and 1 table, published versio
Distance-based skeletonization on the BCC grid
Strand proposed a distance-based thinning algorithm for computing surface skeletons on the body-centered cubic (BCC) grid. In this paper, we present two modified versions of this algorithm that are faster than the original one, and less sensitive to the visiting order of points in the sequential thinning phase. In addition, a novel algorithm capable of producing curve skeletons is also reported
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