MadGraph5_aMC@NLO

Defining two decay chains

Asked by Pim Verschuuren

Hi all,

I am trying to generate a top quark pair that decays semi-hadronically i.e. where both top quarks decay into a W-boson and a b-quark but only one of those W decays into two quarks and the other into a lepton and its corresponding neutrino.

Basically I want to define a process where either one of the following decay chain is chosen:

generate p p > t t~, (t > W+ b, W+ > l+ vl), (t~ > W- b~, W- > j j)

generate p p > t t~, (t > W+ b, W+ > j j), (t~ > W- b~, W- > l- vl~)

Thanks in advance.

Kind regards,

Pim

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Olivier Mattelaer (olivier-mattelaer) said : 		#1

Is their any issue with
> generate p p > t t~, (t > W+ b, W+ > l+ vl), (t~ > W- b~, W- > j j)
> add process p p > t t~, (t > W+ b, W+ > j j), (t~ > W- b~, W- > l- vl~)

Cheers,

Olivier

> On 25 Mar 2020, at 12:27, Pim Verschuuren <email address hidden> wrote:
>
> New question #689487 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/689487
>
> Hi all,
>
> I am trying to generate a top quark pair that decays semi-hadronically i.e. where both top quarks decay into a W-boson and a b-quark but only one of those W decays into two quarks and the other into a lepton and its corresponding neutrino.
>
> Basically I want to define a process where either one of the following decay chain is chosen:
>
> generate p p > t t~, (t > W+ b, W+ > l+ vl), (t~ > W- b~, W- > j j)
>
> generate p p > t t~, (t > W+ b, W+ > j j), (t~ > W- b~, W- > l- vl~)
>
> Thanks in advance.
>
> Kind regards,
>
> Pim
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Revision history for this message
Pim Verschuuren (pverschu) said : 		#2

That works. Thank you