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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2411.08454 |
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| _version_ | 1866910815101124608 |
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| author | Wang, Ru-Xuan Yang, Mao-Zhi |
| author_facet | Wang, Ru-Xuan Yang, Mao-Zhi |
| contents | We revisit $B\to K^*π$ and $B\to Kρ$ decay processes using the modified perturbative QCD approach, which is developed based on the perturbative QCD approach with a few improvements. A critical infrared cutoff scale $μ_c$ is introduced to separate hard and soft contributions in the decay process. Hard contributions with scale $μ$ larger than $μ_c$ are calculated with perturbative QCD, and soft contributions with $μ<μ_c$ are described in terms of soft transition and production form factors. In addition, color-octet contributions are considered phenomenologically. The branching fractions and $CP$ violations of $B\to K^*π$, $Kρ$ decays are calculated. With appropriate parameter inputs, the theoretical results can be in good agreement with experimental data. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_08454 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Revisiting $B\to K^*π$ and $B\to Kρ$ decays using the modified perturbative QCD approach Wang, Ru-Xuan Yang, Mao-Zhi High Energy Physics - Phenomenology We revisit $B\to K^*π$ and $B\to Kρ$ decay processes using the modified perturbative QCD approach, which is developed based on the perturbative QCD approach with a few improvements. A critical infrared cutoff scale $μ_c$ is introduced to separate hard and soft contributions in the decay process. Hard contributions with scale $μ$ larger than $μ_c$ are calculated with perturbative QCD, and soft contributions with $μ<μ_c$ are described in terms of soft transition and production form factors. In addition, color-octet contributions are considered phenomenologically. The branching fractions and $CP$ violations of $B\to K^*π$, $Kρ$ decays are calculated. With appropriate parameter inputs, the theoretical results can be in good agreement with experimental data. |
| title | Revisiting $B\to K^*π$ and $B\to Kρ$ decays using the modified perturbative QCD approach |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2411.08454 |