Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2501.01060 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866917489283170304 |
|---|---|
| author | Cui, Sheng-Kai Sun, Ke-Sheng Yan, Yu-Li Yang, Jin-Lei Feng, Tai-Fu |
| author_facet | Cui, Sheng-Kai Sun, Ke-Sheng Yan, Yu-Li Yang, Jin-Lei Feng, Tai-Fu |
| contents | Using the pinch technique, we compute the one-loop vertices of weak interactions in the B-LSSM and incorporate their pinch contributions into the gauge boson self-energies. Compared to the definitions of the $S, T,$ and $U$ parameters in the Standard Model based on the $SU(2)_L \otimes U(1)_Y$ group, the corresponding parameters in the local B-L gauge symmetry (B-LSSM) are modified. We provide these redefined $S, T,$ and $U$ parameters and demonstrate the convergence of the results. In the framework of the low-energy effective Lagrangian for weak interactions, the $S, T,$ and $U$ parameters can be expressed as functions of certain parameters in the B-LSSM. The updated experimental and fitting results constrain the parameter space of the B-LSSM strongly. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_01060 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | $S, T, U$ Parameters in The B-LSSM Cui, Sheng-Kai Sun, Ke-Sheng Yan, Yu-Li Yang, Jin-Lei Feng, Tai-Fu High Energy Physics - Phenomenology Using the pinch technique, we compute the one-loop vertices of weak interactions in the B-LSSM and incorporate their pinch contributions into the gauge boson self-energies. Compared to the definitions of the $S, T,$ and $U$ parameters in the Standard Model based on the $SU(2)_L \otimes U(1)_Y$ group, the corresponding parameters in the local B-L gauge symmetry (B-LSSM) are modified. We provide these redefined $S, T,$ and $U$ parameters and demonstrate the convergence of the results. In the framework of the low-energy effective Lagrangian for weak interactions, the $S, T,$ and $U$ parameters can be expressed as functions of certain parameters in the B-LSSM. The updated experimental and fitting results constrain the parameter space of the B-LSSM strongly. |
| title | $S, T, U$ Parameters in The B-LSSM |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2501.01060 |