Observation of the J/$ψ$ $\to$ $μ^+μ^-μ^+μ^-$ decay in proton-proton collisions at $\sqrt{s}$ = 13 TeV
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866911909744214016 |
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| author | CMS Collaboration |
| author_facet | CMS Collaboration |
| contents | The J/$ψ$ $\to$ $μ^+μ^-μ^+μ^-$ decay has been observed with a statistical significance in excess of five standard deviations. The analysis is based on an event sample of proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the CMS experiment in 2018 and corresponding to an integrated luminosity of 33.6 fb$^{-1}$. Normalizing to the J/$ψ$ $\to$ $μ^+μ^-$ decay mode leads to a branching fraction [10.1 $^{+3.3}_{-2.7}$ (stat) $\pm$ 0.4 (syst)] $\times$ 10$^{-7}$, a value that is consistent with the standard model prediction. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2403_11352 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Observation of the J/$ψ$ $\to$ $μ^+μ^-μ^+μ^-$ decay in proton-proton collisions at $\sqrt{s}$ = 13 TeV CMS Collaboration High Energy Physics - Experiment The J/$ψ$ $\to$ $μ^+μ^-μ^+μ^-$ decay has been observed with a statistical significance in excess of five standard deviations. The analysis is based on an event sample of proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the CMS experiment in 2018 and corresponding to an integrated luminosity of 33.6 fb$^{-1}$. Normalizing to the J/$ψ$ $\to$ $μ^+μ^-$ decay mode leads to a branching fraction [10.1 $^{+3.3}_{-2.7}$ (stat) $\pm$ 0.4 (syst)] $\times$ 10$^{-7}$, a value that is consistent with the standard model prediction. |
| title | Observation of the J/$ψ$ $\to$ $μ^+μ^-μ^+μ^-$ decay in proton-proton collisions at $\sqrt{s}$ = 13 TeV |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2403.11352 |