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| Format: | Preprint |
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2024
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| Online Access: | https://arxiv.org/abs/2409.17175 |
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| _version_ | 1866914957253148672 |
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| author | Amirkhanlou, Elnaz Mohammadi, Behnam |
| author_facet | Amirkhanlou, Elnaz Mohammadi, Behnam |
| contents | Recently, a study on the $J/ψη$ mass spectrum from $B^+\rightarrow J/ψηK^+$ decays was reported by the LHCb detector. The results of this study are reported as a ratio of branching fractions as $F_{X}\equiv\frac{\mathcal{B}r(B^+\rightarrow XK^+)\times\mathcal{B}r(X\rightarrow J/ψη)}{\mathcal{B}r(B^+\rightarrow ψ(2S) K^+)\times\mathcal{B}r(ψ(2S)\rightarrow J/ψη)}$ for $X=ψ_2(3823),ψ(4040)$, which are $(5.95^{+3.38}_{-2.55})\times10^{-2}$ and $(40.60\pm11.20)\times10^{-2}$, respectively. Also, the products related to $B_{X}\equiv\mathcal{B}r(B^+\rightarrow XK^+)\times\mathcal{B}r(X\rightarrow J/ψη)$ branching fractions are $B_{ψ_2(3823)}=(1.25^{+0.71}_{-0.53}\pm0.04)\times10^{-6}$ and $B_{ψ(4040)}=(8.53\pm2.35\pm0.30)\times10^{-6}$. For the first time, we calculated this branching fraction using factorization. According to our calculations, $F_X$ to be $F_{ψ_{2}(3823)}=(6.55\pm1.88)\times10^{-2}$ and $F_{ψ(4040)}=(14.33\pm4.15)\times10^{-2}$ at $μ=m_b/2$. We have estimated $B_{ψ_{2}(3823)}=(0.26\pm0.05)\times10^{-6}$ at $μ=m_b/2$ and $B_{ψ(4040)}=(2.88\pm0.64)\times10^{-6}$ at $μ=2m_b$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2409_17175 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Contributions of $ψ_{2}(3823)$ and $ψ(4040)$ charmonium in $B^+\rightarrow J/ψηK^+$ decay Amirkhanlou, Elnaz Mohammadi, Behnam High Energy Physics - Phenomenology High Energy Physics - Experiment Recently, a study on the $J/ψη$ mass spectrum from $B^+\rightarrow J/ψηK^+$ decays was reported by the LHCb detector. The results of this study are reported as a ratio of branching fractions as $F_{X}\equiv\frac{\mathcal{B}r(B^+\rightarrow XK^+)\times\mathcal{B}r(X\rightarrow J/ψη)}{\mathcal{B}r(B^+\rightarrow ψ(2S) K^+)\times\mathcal{B}r(ψ(2S)\rightarrow J/ψη)}$ for $X=ψ_2(3823),ψ(4040)$, which are $(5.95^{+3.38}_{-2.55})\times10^{-2}$ and $(40.60\pm11.20)\times10^{-2}$, respectively. Also, the products related to $B_{X}\equiv\mathcal{B}r(B^+\rightarrow XK^+)\times\mathcal{B}r(X\rightarrow J/ψη)$ branching fractions are $B_{ψ_2(3823)}=(1.25^{+0.71}_{-0.53}\pm0.04)\times10^{-6}$ and $B_{ψ(4040)}=(8.53\pm2.35\pm0.30)\times10^{-6}$. For the first time, we calculated this branching fraction using factorization. According to our calculations, $F_X$ to be $F_{ψ_{2}(3823)}=(6.55\pm1.88)\times10^{-2}$ and $F_{ψ(4040)}=(14.33\pm4.15)\times10^{-2}$ at $μ=m_b/2$. We have estimated $B_{ψ_{2}(3823)}=(0.26\pm0.05)\times10^{-6}$ at $μ=m_b/2$ and $B_{ψ(4040)}=(2.88\pm0.64)\times10^{-6}$ at $μ=2m_b$. |
| title | Contributions of $ψ_{2}(3823)$ and $ψ(4040)$ charmonium in $B^+\rightarrow J/ψηK^+$ decay |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2409.17175 |