Model implementation in SARAH

Question how to implement a model or how to change a model implementation
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SounakSengupta
Posts: 6
Joined: 19. Apr 2023, 11:17

Model implementation in SARAH

Post by SounakSengupta » 2. May 2023, 13:33

Respected authors,
I have been trying to implement the Alternative LRM model, with a bidoublet and two doublet Higgs. I have a term in the scalar potential that looks like \alpha \chi^{\dagger}\tilde{\phi}^{\dagger}\tilde{\phi}\chi in TeX format. Here phi is the bidoublet and chi is a doublet. I'm not sure how to write it using contractions in SARAH.
I have written it as alpha conj[chi] phi conj[phi] chi as a test and it provides the correct mass matrices but I can't calculate the RGEs as it seems that there is a 'disentanglement' error. Please help.

SounakSengupta
Posts: 6
Joined: 19. Apr 2023, 11:17

Re: Model implementation in SARAH

Post by SounakSengupta » 4. May 2023, 11:22

Regarding the disentanglement issue, we have another term in the Lagrangian that looks like \alpha_2 \chi^{\dagger} \phi \phi^{\dagger}\chi and we have written it as alpha_2 conj[chi] phi conj[phi] chi

porod
Posts: 19
Joined: 8. Jul 2019, 14:06

Re: Model implementation in SARAH

Post by porod » 12. May 2023, 16:51

Hi,
I do not understand \ \alpha_2 chi^{\dagger} \phi \phi^{\dagger}\chi and \alpha \chi^{\dagger}\tilde{\phi}^{\dagger}\tilde{\phi}\chi can be both LR invariant. What precisely do you mean by \tilde{\phi}^{\dagger} ?
Best, Werner

SounakSengupta
Posts: 6
Joined: 19. Apr 2023, 11:17

Re: Model implementation in SARAH

Post by SounakSengupta » 13. May 2023, 16:29

Image
Attachments
IMG_20230513_195434.jpg
I'm trying to write this scalar potential in SARAH.
I was having this issue while trying to write the alpha3 terms.
Tilde signifies sigma_2. Phi* . sigma _2
Sigma 2 is the second Pauli matrix.
IMG_20230513_195434.jpg (67.7 KiB) Viewed 4895 times

porod
Posts: 19
Joined: 8. Jul 2019, 14:06

Re: Model implementation in SARAH

Post by porod » 1. Jun 2023, 14:55

Hi,
as far as I can see all the terms are given in the LRLR models which is one of the LRmodels. You can find the corresponding input files in the folder Models/LRmodels/LRLR

Best, Werner

SounakSengupta
Posts: 6
Joined: 19. Apr 2023, 11:17

Re: Model implementation in SARAH

Post by SounakSengupta » 7. Jun 2023, 21:44

Thank you a lot.
Best wishes

SounakSengupta
Posts: 6
Joined: 19. Apr 2023, 11:17

Re: Model implementation in SARAH

Post by SounakSengupta » 4. Jul 2023, 11:06

The model we are trying to implement, has a Higgs bidoublet like the standard LRSM model and two doublet Higgs instead of the two triplets in the standard LRSM.

The LRLR model on the other hand has two doublets, two triplets and three singlet Higgs fields.

The Higgs structure seems vastly different with no bidoublet. Please help.

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