Speaker
家乐 丁
(山东大学)
Description
We present high-precision predictions for associated $tW$ production at the LHC that incorporate the next-to-next-to-leading order hard and soft functions as well as the complete next-to-next-to-next-to-leading order scale-dependent terms derived from the corresponding anomalous dimensions. These higher-order corrections, which dominate the full perturbative results, increase the next-to-leading order cross section by more than 10%. Based on the comparison with ATLAS and CMS measurements, we directly extract the Cabibbo-Kobayashi-Maskawa matrix element $|V_{tb}|=0.99\pm 0.03({\rm exp.})\pm 0.03({\rm theo.})$ without assuming unitarity, achieving a precision comparable with the current world average value.
| 请选择分会 | TeV物理和超出标准模型新物理 |
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