Values of cross sections for WH and ZH production

Asked by Maksym Ovchynnikov on 2019-07-02

I simulated the cross sections for the production of the Higgs bosons in association with W and Z:

generate p p > w+ h
add process p p > w- h

for W, and

generate p p > z h

for Z.

It turned out that they are ~2 times larger than the cross sections computed within the NLO accuracy:
https://twiki.cern.ch/twiki/bin/view/LHCPhysics/CERNYellowReportPageAt7TeV2014

What can be a reason for this?

Question information

Language:
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Status:
Solved
For:
MadGraph5_aMC@NLO Edit question
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Solved by:
Olivier Mattelaer
Solved:
2019-07-02
Last query:
2019-07-02
Last reply:
2019-07-02

Did you look at the associated paper and apply the equivalent cut?
Looks like that they put quite strong cut and therefore this is not surprising that they cross-section is much smaller.

Cheers,

Olivier

> On 2 Jul 2019, at 14:08, Maksym Ovchynnikov <email address hidden> wrote:
>
> New question #681757 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/681757
>
> I simulated the cross sections for the production of the Higgs bosons in association with W and Z:
>
> generate p p > w+ h
> add process p p > w- h
>
> for W, and
>
> generate p p > z h
>
> for Z.
>
> It turned out that they are ~2 times larger than the cross sections computed within the NLO accuracy:
> https://twiki.cern.ch/twiki/bin/view/LHCPhysics/CERNYellowReportPageAt7TeV2014
>
> What can be a reason for this?
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Maksym Ovchynnikov (name-xxx) said : #2

Thanks Olivier Mattelaer, that solved my question.