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| Autore principale: | |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2408.03980 |
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| _version_ | 1866914905294110720 |
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| author | BESIII Collaboration |
| author_facet | BESIII Collaboration |
| contents | Using 7.33 fb$^{-1}$ of $e^+e^-$ collision data samples collected with the BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV, we search for the radiative decay $D_s^+\toγρ(770)^+$ for the first time. A hint of $D_s^+\toγρ(770)^+$ is observed with a statistical significance of 2.5$σ$. %Our data contains a signal of this decay with a statistical significance of 2.5$σ$. %No obvious signals are found with the current statistics. The upper limits of the branching fraction for $D_s^+\toγρ(770)^+$ is set to be $\mathcal{B}(D^+_s\to γρ(770)^+) < 6.1\times$10$^{-4}$. The branching fraction of $D_s^+\toγρ(770)^+$ is measured to be $(2.2\pm0.9_{\rm stat.}\pm0.2_{\rm syst.})\times10^{-4}$, corresponding to an upper limit of $6.1\times$10$^{-4}$ at the $90\%$ confidence level. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_03980 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Search for the radiative decay $D^+_s \to γρ(770)^+$ BESIII Collaboration High Energy Physics - Experiment Using 7.33 fb$^{-1}$ of $e^+e^-$ collision data samples collected with the BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV, we search for the radiative decay $D_s^+\toγρ(770)^+$ for the first time. A hint of $D_s^+\toγρ(770)^+$ is observed with a statistical significance of 2.5$σ$. %Our data contains a signal of this decay with a statistical significance of 2.5$σ$. %No obvious signals are found with the current statistics. The upper limits of the branching fraction for $D_s^+\toγρ(770)^+$ is set to be $\mathcal{B}(D^+_s\to γρ(770)^+) < 6.1\times$10$^{-4}$. The branching fraction of $D_s^+\toγρ(770)^+$ is measured to be $(2.2\pm0.9_{\rm stat.}\pm0.2_{\rm syst.})\times10^{-4}$, corresponding to an upper limit of $6.1\times$10$^{-4}$ at the $90\%$ confidence level. |
| title | Search for the radiative decay $D^+_s \to γρ(770)^+$ |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2408.03980 |