期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 5, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP05(2015)013
关键词
QCD Phenomenology; Monte Carlo Simulations
资金
- ERC [614577]
- Research Executive Agency (REA) of the European Union [PITN-GA-2010-264564]
- Swiss National Science Foundation (SNF) [PBZHP2-147297]
- Munich Institute for Astro- and Particle Physics (MIAPP) of the DFG cluster of excellence Origin and Structure of the Universe
- Mainz Institute for Theoretical Physics (MITP) of the PRISMA excellence cluster
- STFC [ST/L000474/1] Funding Source: UKRI
- European Research Council (ERC) [614577] Funding Source: European Research Council (ERC)
- Science and Technology Facilities Council [ST/L000474/1] Funding Source: researchfish
- Swiss National Science Foundation (SNF) [PBZHP2_147297] Funding Source: Swiss National Science Foundation (SNF)
In this note we analyse the excess in the W (+) W (-) inclusive cross section recently measured at the LHC. We point out that in fact for the ATLAS fiducial cross sections there is no excess in the measurements compared to the NLO QCD predictions. We also argue that higher order effects to the fiducial cross section are small, and tend to cancel each other, hence the inclusion of NNLO and NNLL corrections will not modify this agreement significantly. We find that at 8 TeV a substantial part of the disagreement with the NLO prediction for the total cross section observed by ATLAS is due to the extrapolation carried out with POWHEG.
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