Weak decays of $B_s$ to $D_s$ based on the helicity analysis
Fuente:
arXiv
Enregistré dans:
| Auteur principal: | |
|---|---|
| Format: | Preprint |
| Publié: |
2024
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866912273211064320 |
|---|---|
| author | Rahmani, Sara |
| author_facet | Rahmani, Sara |
| contents | Employing dipole and exponential hadronic transition form factors and helicity analysis combined with the Lattice QCD input, we present a detailed study of the decays $B_s \to D_s^{(*)}\ell ν_\ell$. $B_s \to D_s + P(V)$, where $P = π^+, K^+, D_s^+$ and $V = ρ^+, K^{*+}, D_s^{*+}$, are also investigated and their branching fractions are examined. At the large recoil point, we calculate $f_{ + ,0}^{{B_s} \to {D_s}}(0) = 0.67 \pm 0.01$ for both parameterizations. Then we evaluate the branching fractions $BR({B_s} \to {D_s}\ell ν)$ and $BR({B_s} \to {D_s}\ell ν)$, which leads to $R({D_s}) = 0.298 \pm 0.123$. The ratios $\frac{{Γ(B_s^0 \to D_s^ - {μ^ + }{ν_μ})}}{{Γ(B_s^0 \to D_s^{* - }{μ^ + }{ν_μ})}}$ are found to be $0.4415 \pm 0.1860$ and $0.4406 \pm 0.1854$, which are in good agreement of recent LHCb collaboration measurement. We also calculate the physical observables, $A_{FB}^\ell ,P_L^\ell ,P_T^\ell ,C_F^\ell ,F_L^\ell $. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_02460 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Weak decays of $B_s$ to $D_s$ based on the helicity analysis Rahmani, Sara High Energy Physics - Phenomenology Employing dipole and exponential hadronic transition form factors and helicity analysis combined with the Lattice QCD input, we present a detailed study of the decays $B_s \to D_s^{(*)}\ell ν_\ell$. $B_s \to D_s + P(V)$, where $P = π^+, K^+, D_s^+$ and $V = ρ^+, K^{*+}, D_s^{*+}$, are also investigated and their branching fractions are examined. At the large recoil point, we calculate $f_{ + ,0}^{{B_s} \to {D_s}}(0) = 0.67 \pm 0.01$ for both parameterizations. Then we evaluate the branching fractions $BR({B_s} \to {D_s}\ell ν)$ and $BR({B_s} \to {D_s}\ell ν)$, which leads to $R({D_s}) = 0.298 \pm 0.123$. The ratios $\frac{{Γ(B_s^0 \to D_s^ - {μ^ + }{ν_μ})}}{{Γ(B_s^0 \to D_s^{* - }{μ^ + }{ν_μ})}}$ are found to be $0.4415 \pm 0.1860$ and $0.4406 \pm 0.1854$, which are in good agreement of recent LHCb collaboration measurement. We also calculate the physical observables, $A_{FB}^\ell ,P_L^\ell ,P_T^\ell ,C_F^\ell ,F_L^\ell $. |
| title | Weak decays of $B_s$ to $D_s$ based on the helicity analysis |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2409.02460 |