Reinvestigating the semileptonic $B\to D^{(\ast)}τ\barν_τ$ decays in the model independent scenarios and leptoquark models
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909675325227008 |
|---|---|
| author | Huang, Zhuo-Ran Bhutta, Faisal Munir Farooq, Nimra Paracha, M. Ali Li, Ying |
| author_facet | Huang, Zhuo-Ran Bhutta, Faisal Munir Farooq, Nimra Paracha, M. Ali Li, Ying |
| contents | In this work, we revisit the possible new physics (NP) solutions by analyzing the observables associated with $B\to D^{(\ast)}τ\barν_τ$ decays. To explore the structure of new physics, the form factors of $B\to D^{(\ast)}$ decays play a crucial role. In this study, we utilize the form factor results obtained from a simultaneous fit to Belle data and lattice QCD calculations. Using these form factors, we conduct a global fit of the new physics Wilson coefficients, incorporating the most recent experimental data. Additionally, we use the form factors and Wilson coefficients to make predictions for physical observables, including the lepton flavor universality ratio $R_{D^{(\ast)}}$, polarized observables, and the normalized angular coefficients $\langle I\rangle$'s related to the four-fold decays $B\to D^{\ast}(\to Dπ, Dγ)τ\barν_τ$. These predictions are calculated in both model-independent scenarios and for three different leptoquark models. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_03734 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Reinvestigating the semileptonic $B\to D^{(\ast)}τ\barν_τ$ decays in the model independent scenarios and leptoquark models Huang, Zhuo-Ran Bhutta, Faisal Munir Farooq, Nimra Paracha, M. Ali Li, Ying High Energy Physics - Phenomenology High Energy Physics - Experiment In this work, we revisit the possible new physics (NP) solutions by analyzing the observables associated with $B\to D^{(\ast)}τ\barν_τ$ decays. To explore the structure of new physics, the form factors of $B\to D^{(\ast)}$ decays play a crucial role. In this study, we utilize the form factor results obtained from a simultaneous fit to Belle data and lattice QCD calculations. Using these form factors, we conduct a global fit of the new physics Wilson coefficients, incorporating the most recent experimental data. Additionally, we use the form factors and Wilson coefficients to make predictions for physical observables, including the lepton flavor universality ratio $R_{D^{(\ast)}}$, polarized observables, and the normalized angular coefficients $\langle I\rangle$'s related to the four-fold decays $B\to D^{\ast}(\to Dπ, Dγ)τ\barν_τ$. These predictions are calculated in both model-independent scenarios and for three different leptoquark models. |
| title | Reinvestigating the semileptonic $B\to D^{(\ast)}τ\barν_τ$ decays in the model independent scenarios and leptoquark models |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2501.03734 |