MadGraph5_aMC@NLO

2HDM NLOCT Error aS counterterm depends on the kinematic

Asked by Fernando Cornet-Gomez on 2019-09-27

Hello,

I am interested in using MG5 for a 2HDM. In particular I will need to generate higgses via ggF, so if I am not wrong, I need to generate a UFO NLO model in feynrules. Before generating the 2HDM in which I am interested on, I am trying to reproduce the UFO provided by Feynrules in https://feynrules.irmp.ucl.ac.be/wiki/2HDM . For that I use all the files provided in the web page and run them using the .nb given there. Everything seems to work correctly until i run the Counterterms computation with
WriteCT["2HDM/2HDM","Lorentz", Output -> "2HDM", LabelInternal -> True, QCDOnly -> True, KeptIndices -> {}, ZeroMom -> {{aS, {F[7], V[4], -F[7]}, 0}}]
it runs with no error (i get a warning: warning: FF vertex does not seem match expected form, further simplification may be needed) until the {S,S,S,S} vertices that I get Error : Solution for aS counterterm depends on the kinematic, finite part is set to zero. Then it fatally crash.

As I am not interested in the 4 S vertices, I've seen in the C. Degrande documentation (1406.3030) that the there is the possibility of setting them off with Exclude4ScalarsCT->True. Then I get the same error but in the previous step which is {V, V, S, S} vertices.

Is this a known error? Has anyone found a solution?

Thank you for your help,
Fernando Cornet-Gomez

Question information

Language:
English Edit question
Status:
Solved
For:
MadGraph5_aMC@NLO Edit question
Assignee:
celine degrande Edit question
Solved by:
Fernando Cornet-Gomez
Solved:
2019-09-27
Last query:
2019-09-27
Last reply:
2019-09-27
Olivier Mattelaer (olivier-mattelaer) said : #1

Sorry but we do not support feynrules and nloct here. I would suggest to contact celine Degrande directly by email.

Cheers,

Olivier

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________________________________
From: <email address hidden> <email address hidden> on behalf of Fernando Cornet-Gomez <email address hidden>
Sent: Friday, September 27, 2019 5:33:01 PM
To: Olivier Mattelaer <email address hidden>
Subject: [Question #684368]: 2HDM NLOCT Error aS counterterm depends on the kinematic

New question #684368 on MadGraph5_aMC@NLO:
https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fanswers.launchpad.net%2Fmg5amcnlo%2F%2Bquestion%2F684368&amp;data=02%7C01%7Colivier.mattelaer%40uclouvain.be%7C59c31fa3d34c4c35a69e08d7435ffb76%7C7ab090d4fa2e4ecfbc7c4127b4d582ec%7C0%7C0%7C637051952594153244&amp;sdata=aBtqlIHvNLUH9l47ABk0IxHmojiAHTQ9pc9JjOeu9sM%3D&amp;reserved=0

Hello,

I am interested in using MG5 for a 2HDM. In particular I will need to generate higgses via ggF, so if I am not wrong, I need to generate a UFO NLO model in feynrules. Before generating the 2HDM in which I am interested on, I am trying to reproduce the UFO provided by Feynrules in https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Ffeynrules.irmp.ucl.ac.be%2Fwiki%2F2HDM&amp;data=02%7C01%7Colivier.mattelaer%40uclouvain.be%7C59c31fa3d34c4c35a69e08d7435ffb76%7C7ab090d4fa2e4ecfbc7c4127b4d582ec%7C0%7C0%7C637051952594153244&amp;sdata=8zA1PHkgiMHulJke8vZWxuut1UwICs%2BhgCwTLjlnKG0%3D&amp;reserved=0 . For that I use all the files provided in the web page and run them using the .nb given there. Everything seems to work correctly until i run the Counterterms computation with
WriteCT["2HDM/2HDM","Lorentz", Output -> "2HDM", LabelInternal -> True, QCDOnly -> True, KeptIndices -> {}, ZeroMom -> {{aS, {F[7], V[4], -F[7]}, 0}}]
it runs with no error (i get a warning: warning: FF vertex does not seem match expected form, further simplification may be needed) until the {S,S,S,S} vertices that I get Error : Solution for aS counterterm depends on the kinematic, finite part is set to zero. Then it fatally crash.

As I am not interested in the 4 S vertices, I've seen in the C. Degrande documentation (1406.3030) that the there is the possibility of setting them off with Exclude4ScalarsCT->True. Then I get the same error but in the previous step which is {V, V, S, S} vertices.

Is this a known error? Has anyone found a solution?

Thank you for your help,
Fernando Cornet-Gomez

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Fernando Cornet-Gomez (fcornetg) said : #2

Dear Olivier,
Sorry for the inconvenience, I only asked it here because I saw some questions solved about NLOCT by Celine Degrande in this forum.
Cheers

Olivier Mattelaer (olivier-mattelaer) said : #3

I have assign the bug report to her.
But I can not guarantee that she will receive the notification