Top-Antitop Pair Production close to Threshold: Synopsis of recent NNLO Results
A.H. Hoang, M. Beneke, K. Melnikov, T. Nagano, A. Ota, A.A. Penin,, A.A. Pivovarov, A. Signer, V.A. Smirnov, Y. Sumino, T. Teubner, O. Yakovlev,, A. Yelkhovsky
TL;DR
This paper reviews recent NNLO QCD calculations for top-antitop pair production near threshold, compares different results, discusses uncertainties, and explores implications for precise top quark mass measurements.
Contribution
It provides a comprehensive comparison of NNLO calculations from various groups and discusses future prospects for reducing uncertainties in top quark mass determination.
Findings
NNLO corrections significantly improve theoretical predictions.
Remaining uncertainties are identified and analyzed.
Future improvements could further enhance measurement precision.
Abstract
Using non-relativistic effective theories, new next-to-next-to-leading order (NNLO) QCD corrections to the total production cross section at the Linear Collider have been calculated recently. In this article the NNLO calculations of several groups are compared and the remaining uncertainties are discussed. The theoretical prospects for an accurate determination of top quark mass parameters are discussed in detail. An outlook on possible future improvements is given.
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Taxonomy
TopicsAdvancements in Photolithography Techniques · Silicon and Solar Cell Technologies