Tau decay to hadron pions error

Asked by Zahra

Dear experts,

I hope you are well.

I want to generate the decay of tau, I mean this: ta- > w- vt, (w- > pi- pi+ pi-), pi is the pion hadron. Therefore, I import taudecay UFO model, but it can not be generated. Would you please tell me what I should do?

Sincerely yours,
Zahra

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Olivier Mattelaer (olivier-mattelaer) said :
#1

Hi,

Your syntax requires that the w- to be onshell. Therefore your syntax is not possible within the Standard Model.

The following syntax might be what you want (please check the diagram generated):
ta- > w- > vt pi- pi+ pi-

Cheers,

Olivier

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Zahra (zahra71) said :
#2

Dear Olivier,
Thank you for your consideration.
I tested what you said unfortunately I have an error again which mentioned that w- is not in the model.

Sincerely yours,

Zahra

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Olivier Mattelaer (olivier-mattelaer) said :
#3

Did you read the paper associated to the taudecay model?

This information should be in that model.

Cheers,

Olivier

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Zahra (zahra71) said :
#4

Dear Olivier,

Thank you for your reply.

No, I will read that.

Sincerely yours,
Zahra

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