Vector leptoquark contributions to lepton dipole moments
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915180923846656 |
|---|---|
| author | Bhaskar, Arvind Das, Diganta Kundu, Soumyadip Madathil, Anirudhan A. Mandal, Tanumoy Mitra, Subhadip |
| author_facet | Bhaskar, Arvind Das, Diganta Kundu, Soumyadip Madathil, Anirudhan A. Mandal, Tanumoy Mitra, Subhadip |
| contents | Leptoquarks (LQs) can contribute to the magnetic and electric dipole moments of charged leptons, which the current experiments have measured with good accuracy. We revisit the parameter spaces of TeV-scale vector LQs that contribute to these observables and study how these models fare against the LHC bounds. We show that significant portions of the parameter space are excluded when the current LHC data is utilised effectively. We find that only $U_1$ and $V_2$ can explain the observed positive shift in $(a_μ^{\rm exp} - a_μ^{\rm SM})$ through a lepton chirality-flipping contribution with $\mathcal O(1)$ LQ-quark-lepton coupling. We also see how these two LQs can fit the electron dipole moment and atomic parity violation measurements. We find that the current electric dipole moment measurements of the muon cannot restrain the LQ-quark-lepton couplings within perturbative regions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_11798 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Vector leptoquark contributions to lepton dipole moments Bhaskar, Arvind Das, Diganta Kundu, Soumyadip Madathil, Anirudhan A. Mandal, Tanumoy Mitra, Subhadip High Energy Physics - Phenomenology High Energy Physics - Experiment Leptoquarks (LQs) can contribute to the magnetic and electric dipole moments of charged leptons, which the current experiments have measured with good accuracy. We revisit the parameter spaces of TeV-scale vector LQs that contribute to these observables and study how these models fare against the LHC bounds. We show that significant portions of the parameter space are excluded when the current LHC data is utilised effectively. We find that only $U_1$ and $V_2$ can explain the observed positive shift in $(a_μ^{\rm exp} - a_μ^{\rm SM})$ through a lepton chirality-flipping contribution with $\mathcal O(1)$ LQ-quark-lepton coupling. We also see how these two LQs can fit the electron dipole moment and atomic parity violation measurements. We find that the current electric dipole moment measurements of the muon cannot restrain the LQ-quark-lepton couplings within perturbative regions. |
| title | Vector leptoquark contributions to lepton dipole moments |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2408.11798 |