Revisiting $B_s \to PP$ and $PV$ Decays with Contributions from $ϕ_{B2}$ with perturbativen QCD approach
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866918181016174592 |
|---|---|
| author | Yang, Yueling Lu, Zhao-Jie Jin, Su-Ping Sun, Junfeng |
| author_facet | Yang, Yueling Lu, Zhao-Jie Jin, Su-Ping Sun, Junfeng |
| contents | The $B_s \to PP$ and $PV$ decay modes are revisited at leading order within the perturbative QCD approach, incorporating the $B_s$ mesonic wave function (WF) $ϕ_{B2}$. Here, $P$ represents the pseudoscalar mesons $π$ and $K$, while $V$ denotes the ground-state vector mesons. The investigation incorporates two key refinements: the contribution of the sub-leading twist WF $ϕ_{B2}$ of the $B_s$ meson and the effects of higher-order terms in the distribution amplitudes (DAs) of the final-state mesons. Employing the minimum $χ^2$ method, we optimize the shape parameter $ω_{B_s}$ of the $B_s$ meson WF and systematically calculate the branching ratios and $CP$ violation parameters for these decay modes. Our results demonstrate that the inclusion of $ϕ_{B2}$ significantly impacts both the branching ratios and $CP$ asymmetries, offer an improved agreement with existing experimental data for specific channels. This underscores the necessity of accounting for $ϕ_{B2}$ in theoretical studies of $B_s$ weak decays. While the higher-order corrections in the final-state meson DAs yield comparatively smaller effects, they still enhance the theoretical predictions. These findings highlight the importance of refining both wave function modeling and higher-order contributions in pQCD calculations. Future high-precision experimental measurements will further test these predictions, while continued theoretical efforts are essential to explore additional interaction mechanisms and systematic uncertainties. The interplay between experimental advancements and theoretical improvements remains critical for a deeper understanding of $B_s$ meson decay dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_16836 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Revisiting $B_s \to PP$ and $PV$ Decays with Contributions from $ϕ_{B2}$ with perturbativen QCD approach Yang, Yueling Lu, Zhao-Jie Jin, Su-Ping Sun, Junfeng High Energy Physics - Phenomenology The $B_s \to PP$ and $PV$ decay modes are revisited at leading order within the perturbative QCD approach, incorporating the $B_s$ mesonic wave function (WF) $ϕ_{B2}$. Here, $P$ represents the pseudoscalar mesons $π$ and $K$, while $V$ denotes the ground-state vector mesons. The investigation incorporates two key refinements: the contribution of the sub-leading twist WF $ϕ_{B2}$ of the $B_s$ meson and the effects of higher-order terms in the distribution amplitudes (DAs) of the final-state mesons. Employing the minimum $χ^2$ method, we optimize the shape parameter $ω_{B_s}$ of the $B_s$ meson WF and systematically calculate the branching ratios and $CP$ violation parameters for these decay modes. Our results demonstrate that the inclusion of $ϕ_{B2}$ significantly impacts both the branching ratios and $CP$ asymmetries, offer an improved agreement with existing experimental data for specific channels. This underscores the necessity of accounting for $ϕ_{B2}$ in theoretical studies of $B_s$ weak decays. While the higher-order corrections in the final-state meson DAs yield comparatively smaller effects, they still enhance the theoretical predictions. These findings highlight the importance of refining both wave function modeling and higher-order contributions in pQCD calculations. Future high-precision experimental measurements will further test these predictions, while continued theoretical efforts are essential to explore additional interaction mechanisms and systematic uncertainties. The interplay between experimental advancements and theoretical improvements remains critical for a deeper understanding of $B_s$ meson decay dynamics. |
| title | Revisiting $B_s \to PP$ and $PV$ Decays with Contributions from $ϕ_{B2}$ with perturbativen QCD approach |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2502.16836 |