期刊
PHYSICAL REVIEW LETTERS
卷 113, 期 21, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.212001
关键词
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资金
- Swiss National Science Foundation (SNF) [CRSII2-141847, 200021-144352, 200020149517, PP00P2-128552]
- Research Executive Agency (REA) of the European Union [PITN-GA-2010-264564, PITN-GA-2012-316704]
- ERC Advanced Grant MC@NNLO [340983]
- European Research Council (ERC) [340983] Funding Source: European Research Council (ERC)
- Swiss National Science Foundation (SNF) [200021_144352, PP00P2_128552] Funding Source: Swiss National Science Foundation (SNF)
Charged gauge boson pair production at the Large Hadron Collider allows detailed probes of the fundamental structure of electroweak interactions. We present precise theoretical predictions for on-shell W+W- production that include, for the first time, QCD effects up to next to next to leading order in perturbation theory. As compared to next to leading order, the inclusive W+W- cross section is enhanced by 9% at 7 TeV and 12% at 14 TeV. The residual perturbative uncertainty is at the 3% level. The severe contamination of the W+W- cross section due to top-quark resonances is discussed in detail. Comparing different definitions of top-free W+W- production in the four and five flavor number schemes, we demonstrate that top-quark resonances can be separated from the inclusive W+W- cross section without a significant loss of theoretical precision.
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