MadGraph5_aMC@NLO

poles do not cancel with loop_qcd_qed_sm_Gmu-ckm + complex-mass scheme

Asked by marco zaro on 2021-04-07

Hi,
I am facing a problem related when I enable ckm mixing and the complex-mass scheme at the same time.
  import model loop_qcd_qed_sm_Gmu-ckm
  define p = 21 2 4 1 3 -2 -4 -1 -3 22
  define j = p
  set complex_mass_scheme
  generate p p > e+ ve [QCD QED]
  output

check_poles fail, and indeed the O(alpha^3) part of the poles do not cancel (there is a mismatch in the single pole)

Thanks for your help.

Best,

Marco

Question information

Language:
English Edit question
Status:
Answered
For:
MadGraph5_aMC@NLO Edit question
Assignee:
Hua-Sheng Shao Edit question
Last query:
2021-04-07
Last reply:
2021-04-07
Rikkert Frederix (frederix) said : #1

Hi Marco,

Doesn't the CKM matrix require renormalisation when doing EW corrections? Let me forward this question to Hua-Sheng ---maybe he knows if this should work.

Best,
Rikkert

Hua-Sheng Shao (erdissshaw) said : #2

Hi both, yes, non-diagonal CKM with EW corrections requires renormalisation. Cheers, Hua-Sheng

> On 7 Apr 2021, at 15:25, Rikkert Frederix <email address hidden> wrote:
>
> Question #696430 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/696430
>
> Rikkert Frederix posted a new comment:
> Hi Marco,
>
> Doesn't the CKM matrix require renormalisation when doing EW
> corrections? Let me forward this question to Hua-Sheng ---maybe he knows
> if this should work.
>
> Best,
> Rikkert
>
> --
> You received this question notification because you are assigned to this
> question.

marco zaro (marco-zaro) said : #3

So it cannot be used as it is now, is that correct?

> On 7 Apr 2021, at 17:00, Hua-Sheng Shao <email address hidden> wrote:
>
> Your question #696430 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/696430
>
> Status: Open => Answered
>
> Hua-Sheng Shao proposed the following answer:
> Hi both, yes, non-diagonal CKM with EW corrections requires
> renormalisation. Cheers, Hua-Sheng
>
>
>> On 7 Apr 2021, at 15:25, Rikkert Frederix <email address hidden> wrote:
>>
>> Question #696430 on MadGraph5_aMC@NLO changed:
>> https://answers.launchpad.net/mg5amcnlo/+question/696430
>>
>> Rikkert Frederix posted a new comment:
>> Hi Marco,
>>
>> Doesn't the CKM matrix require renormalisation when doing EW
>> corrections? Let me forward this question to Hua-Sheng ---maybe he knows
>> if this should work.
>>
>> Best,
>> Rikkert
>>
>> --
>> You received this question notification because you are assigned to this
>> question.
>
> --
> If this answers your question, please go to the following page to let us
> know that it is solved:
> https://answers.launchpad.net/mg5amcnlo/+question/696430/+confirm?answer_id=1
>
> If you still need help, you can reply to this email or go to the
> following page to enter your feedback:
> https://answers.launchpad.net/mg5amcnlo/+question/696430
>
> You received this question notification because you asked the question.

Hua-Sheng Shao (erdissshaw) said : #4

Hi Marco,
On Apr 7, 2021, at 5:25 PM, marco zaro <email address hidden> wrote:

> Question #696430 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/696430
>
> Status: Answered => Open
>
> marco zaro is still having a problem:
> So it cannot be used as it is now, is that correct?

Yes, it cannot.

Cheers,

Hua-Sheng

>
>
>> On 7 Apr 2021, at 17:00, Hua-Sheng Shao <email address hidden> wrote:
>>
>> Your question #696430 on MadGraph5_aMC@NLO changed:
>> https://answers.launchpad.net/mg5amcnlo/+question/696430
>>
>> Status: Open => Answered
>>
>> Hua-Sheng Shao proposed the following answer:
>> Hi both, yes, non-diagonal CKM with EW corrections requires
>> renormalisation. Cheers, Hua-Sheng
>>
>>
>>> On 7 Apr 2021, at 15:25, Rikkert Frederix <email address hidden> wrote:
>>>
>>> Question #696430 on MadGraph5_aMC@NLO changed:
>>> https://answers.launchpad.net/mg5amcnlo/+question/696430
>>>
>>> Rikkert Frederix posted a new comment:
>>> Hi Marco,
>>>
>>> Doesn't the CKM matrix require renormalisation when doing EW
>>> corrections? Let me forward this question to Hua-Sheng ---maybe he knows
>>> if this should work.
>>>
>>> Best,
>>> Rikkert
>>>
>>> --
>>> You received this question notification because you are assigned to this
>>> question.
>>
>> --
>> If this answers your question, please go to the following page to let us
>> know that it is solved:
>> https://answers.launchpad.net/mg5amcnlo/+question/696430/+confirm?answer_id=1
>>
>> If you still need help, you can reply to this email or go to the
>> following page to enter your feedback:
>> https://answers.launchpad.net/mg5amcnlo/+question/696430
>>
>> You received this question notification because you asked the question.
>
> --
> You received this question notification because you are assigned to this
> question.

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