Higgsstrahlung at NNLL′ plus NNLO matched to parton showers in GENEVA

被引：48
作者：
Alioli, Simone [1 ,2 ]
Broggio, Alessandro [1 ,2 ]
Kallweit, Stefan [1 ,2 ]
Lim, Matthew A. [1 ,2 ]
Rottoli, Luca [1 ,2 ]
机构：
[1] Univ Milano Bicocca, Piazza Sci 3, I-20126 Milan, Italy
[2] INFN, Piazza Sci 3, I-20126 Milan, Italy
来源：
PHYSICAL REVIEW D | 2019年 / 100卷 / 09期
关键词：
TRANSVERSE-MOMENTUM RESUMMATION; COLLINEAR EFFECTIVE THEORY; JET CROSS-SECTIONS; HIGGS-STRAHLUNG; BOSON; DIS;
D O I：
10.1103/PhysRevD.100.096016
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present results for the Higgsstrahlung process within the GENEVA Monte Carlo framework. We combine the fully differential next-to-next-to-leading order (NNLO) calculation with the higher-order resummation in the 0-jettiness resolution variable (beam thrust). The resulting parton-level events are further showered and hadronized by PYTHIA8. The beam thrust resummation is carried out to next-to-next-to-leading logarithmic accuracy, consistently incorporating all singular virtual and real NNLO corrections. It thus provides a natural perturbative connection between the NNLO calculation and the parton shower regime, including a systematic assessment of perturbative uncertainties. In this way, observables which are inclusive over the additional radiation are correct to NNLO, while the description of 0-jet -like resummation variables is improved beyond the parton shower approximation. We provide predictions for the 13 TeV LHC.
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页数：20
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