Next-to-next-to-leading order $N$-jettiness soft function for $tW$ production

Hai Tao Li; Jian Wang

Next-to-next-to-leading order N-jettiness soft function for tW production

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arxiv 1804.06358 v2 pith:6OLHOLEU submitted 2018-04-17 hep-ph

Next-to-next-to-leading order N-jettiness soft function for tW production

Hai Tao Li , Jian Wang This is my paper

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keywords jettinesssoftfunctionnext-to-next-to-leadingorderproductionanomalousbeen

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We calculate the $N$-jettiness soft function for $tW$ production up to next-to-next-to-leading order in QCD, which is an important ingredient of the $N$-jettiness subtraction method for predicting the differential cross sections of massive coloured particle productions. The divergent parts of the results have been checked using the renormalization group equations controlled by the soft anomalous dimension.

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Approximate N$^2$LO and N$^3$LO QCD Predictions for $tW$ Production
hep-ph 2025-12 conditional novelty 6.0

Higher-order QCD corrections to top-plus-W production raise the predicted rate by over 10% and give |Vtb|=0.99±0.03.