MadGraph5_aMC@NLO

what are lpp1 and lpp2

Asked by Antonio Sandroni

Hi; I didn't understand the options lpp1 and lpp2.
If I have the process mu+ mu- > e+ e- where the muons are not coming from other beams but are the initial states of the process, do I need to set lpp1 and lpp2 to 0 or to 1 and -1 because they are muons?
Antonio

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Olivier Mattelaer (olivier-mattelaer) said : 		#1

Hi,

0 means no PDF.
If that fit your case than you can keep that value.
If you need a PDF than you have to change that value.

Cheers,

Olivier

> On 26 Oct 2022, at 12:45, Antonio Sandroni <email address hidden> wrote:
>
> New question #703614 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/703614
>
> Hi; I didn't understand the options lpp1 and lpp2.
> If I have the process mu+ mu- > e+ e- where the muons are not coming from other beams but are the initial states of the process, do I need to set lpp1 and lpp2 to 0 or to 1 and -1 because they are muons?
> Antonio
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

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