EM charge violation

Asked by MohammadMohammadidoust on 2021-03-28

Dear Calchep team

hello
I have the same question which was asked in 670429 (https://answers.launchpad.net/calchep/+question/670429).

the vertices are like : (W+, ~S, ~Y-) all these vertices come from covariant derivatives terms.

how should I fix this problem?

Sincerely

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Alexander Belyaev (alexander.belyaev) said :
#1

Hello,
to solve the problem,
we need to see the  LanHEP model -- you can send it to
<email address hidden>
and
<email address hidden>
Best,
Alexander

On 28/03/2021 23:15, MohammadMohammadidoust wrote:
> Question #696288 on CalcHEP changed:
> https://answers.launchpad.net/calchep/+question/696288
>
> Description changed to:
> Dear Calchep team
>
> hello
> I have the same question which was asked in 670429 (https://answers.launchpad.net/calchep/+question/670429).
>
> the vertices are like : (W+, ~S, ~Y-) all these vertices come from
> covariant derivatives terms.
>
> how should I fix this problem?
>
> Sincerely
>

--
______________________________________________________________________
Prof. Alexander S Belyaev (<email address hidden>)
https://www.hep.phys.soton.ac.uk/content/alexander-belyaev

School of Physics & Astronomy, University of Southampton
Office 5047, SO17 1BJ, TEL: +44 23805 98509, FAX: +44 23805 93910
.....................................................................
Particle Physics Department, Rutherford Appleton Laboratory
Didcot, OX11 0QX, TEL: +44 12354 45562, FAX: +44 12354 46733
.....................................................................
CERN, CH-1211 Geneva 23, Switzerland
Office 40/1-B20, Mailbox: E27910, TEL: +41 2276 71642
______________________________________________________________________

Revision history for this message
MohammadMohammadidoust (m23mohamadidoust) said :
#2

thank you very much
I have sent the model file to both addresses.

Sincerely
Mohammad

Revision history for this message
Alexander Belyaev (alexander.belyaev) said :
#3

I have not received anything to
<email address hidden>

So I can not see your model
Alexander

On 31/03/2021 16:20, MohammadMohammadidoust wrote:
> Question #696288 on CalcHEP changed:
> https://answers.launchpad.net/calchep/+question/696288
>
> Status: Answered => Open
>
> MohammadMohammadidoust is still having a problem:
> thank you very much
> I have sent the model file to both addresses.
>
> Sincerely
> Mohammad
>

--
______________________________________________________________________
Prof. Alexander S Belyaev (<email address hidden>)
https://www.hep.phys.soton.ac.uk/content/alexander-belyaev

School of Physics & Astronomy, University of Southampton
Office 5047, SO17 1BJ, TEL: +44 23805 98509, FAX: +44 23805 93910
.....................................................................
Particle Physics Department, Rutherford Appleton Laboratory
Didcot, OX11 0QX, TEL: +44 12354 45562, FAX: +44 12354 46733
.....................................................................
CERN, CH-1211 Geneva 23, Switzerland
Office 40/1-B20, Mailbox: E27910, TEL: +41 2276 71642
______________________________________________________________________

Revision history for this message
Alexander Belyaev (alexander.belyaev) said :
#4

Alexander Pukhov has forwarded me your model.

from
realtriplet. Model  we have
A    |~Y+  |~Y-  | |EE/2
|m1.p3-m1.p2
which means that the charge of ~Y+ is 1/2

while from
W+   |~S   |~Y-  |
it much have charge 1

So either model or its implementation is not consistent.

Next time you can just check what lanHEP writes to you  -- check lgrng.mdl

Regards,
Alexander

On 31/03/2021 17:30, Alexander Belyaev wrote:
> Question #696288 on CalcHEP changed:
> https://answers.launchpad.net/calchep/+question/696288
>
> Status: Open => Answered
>
> Alexander Belyaev proposed the following answer:
> I have not received anything to
> <email address hidden>
>
> So I can not see your model
> Alexander
>
>
> On 31/03/2021 16:20, MohammadMohammadidoust wrote:
>> Question #696288 on CalcHEP changed:
>> https://answers.launchpad.net/calchep/+question/696288
>>
>> Status: Answered => Open
>>
>> MohammadMohammadidoust is still having a problem:
>> thank you very much
>> I have sent the model file to both addresses.
>>
>> Sincerely
>> Mohammad
>>

--
______________________________________________________________________
Prof. Alexander S Belyaev (<email address hidden>)
https://www.hep.phys.soton.ac.uk/content/alexander-belyaev

School of Physics & Astronomy, University of Southampton
Office 5047, SO17 1BJ, TEL: +44 23805 98509, FAX: +44 23805 93910
.....................................................................
Particle Physics Department, Rutherford Appleton Laboratory
Didcot, OX11 0QX, TEL: +44 12354 45562, FAX: +44 12354 46733
.....................................................................
CERN, CH-1211 Geneva 23, Switzerland
Office 40/1-B20, Mailbox: E27910, TEL: +41 2276 71642
______________________________________________________________________

Revision history for this message
MohammadMohammadidoust (m23mohamadidoust) said :
#5

Dear professors Belyaev and Pukhov
I got it now
 I think it happened because of coefficients of hyper charge in covariant derivatives.

thank you very much
Mohammad