On the excess in the inclusive $W^+W^-\rightarrow l^+l^-\nu\bar\nu$ cross section

In this note we analyse the excess in the $W^+W^-$ inclusive cross section recently measured by the LHC experiments. 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...

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Detalles Bibliográficos
Autores principales: Monni, Pier Francesco, Zanderighi, Giulia
Lenguaje:eng
Publicado: 2014
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1007/JHEP05(2015)013
http://cds.cern.ch/record/1956020
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author Monni, Pier Francesco
Zanderighi, Giulia
author_facet Monni, Pier Francesco
Zanderighi, Giulia
author_sort Monni, Pier Francesco
collection CERN
description In this note we analyse the excess in the $W^+W^-$ inclusive cross section recently measured by the LHC experiments. 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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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
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spelling cern-19560202022-08-10T13:05:02Zdoi:10.1007/JHEP05(2015)013http://cds.cern.ch/record/1956020engMonni, Pier FrancescoZanderighi, GiuliaOn the excess in the inclusive $W^+W^-\rightarrow l^+l^-\nu\bar\nu$ cross sectionParticle Physics - PhenomenologyIn this note we analyse the excess in the $W^+W^-$ inclusive cross section recently measured by the LHC experiments. 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.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.In this note we analyse the excess in the $W^+W^-$ inclusive cross section recently measured by the LHC experiments. 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.arXiv:1410.4745oai:cds.cern.ch:19560202014-10-17
spellingShingle Particle Physics - Phenomenology
Monni, Pier Francesco
Zanderighi, Giulia
On the excess in the inclusive $W^+W^-\rightarrow l^+l^-\nu\bar\nu$ cross section
title On the excess in the inclusive $W^+W^-\rightarrow l^+l^-\nu\bar\nu$ cross section
title_full On the excess in the inclusive $W^+W^-\rightarrow l^+l^-\nu\bar\nu$ cross section
title_fullStr On the excess in the inclusive $W^+W^-\rightarrow l^+l^-\nu\bar\nu$ cross section
title_full_unstemmed On the excess in the inclusive $W^+W^-\rightarrow l^+l^-\nu\bar\nu$ cross section
title_short On the excess in the inclusive $W^+W^-\rightarrow l^+l^-\nu\bar\nu$ cross section
title_sort on the excess in the inclusive $w^+w^-\rightarrow l^+l^-\nu\bar\nu$ cross section
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1007/JHEP05(2015)013
http://cds.cern.ch/record/1956020
work_keys_str_mv AT monnipierfrancesco ontheexcessintheinclusivewwrightarrowllnubarnucrosssection
AT zanderighigiulia ontheexcessintheinclusivewwrightarrowllnubarnucrosssection

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