Measurement of the B$^0_\mathrm{s}$ $\to$ J/$ψ$K$^0_\mathrm{S}$ effective lifetime from 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_ | 1866909392173006848 |
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| author | CMS Collaboration |
| author_facet | CMS Collaboration |
| contents | The effective lifetime of the B$^0_\mathrm{s}$ meson in the decay B$^0_\mathrm{s}$ $\to$ J/$ψ$K$^0_\mathrm{S}$ is measured using data collected during 2016-2018 with the CMS detector in $\sqrt{s}$ = 13 TeV proton-proton collisions at the LHC, corresponding to an integrated luminosity of 140 fb$^{-1}$. The effective lifetime is determined by performing a two-dimensional unbinned maximum likelihood fit to the B$^0_\mathrm{s}$ meson invariant mass and proper decay time distributions. The resulting value of 1.59 $\pm$ 0.07 (stat) $\pm$ 0.03 (syst) ps is the most precise measurement to date and is in good agreement with the expected value. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2407_13441 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Measurement of the B$^0_\mathrm{s}$ $\to$ J/$ψ$K$^0_\mathrm{S}$ effective lifetime from proton-proton collisions at $\sqrt{s}$ = 13 TeV CMS Collaboration High Energy Physics - Experiment The effective lifetime of the B$^0_\mathrm{s}$ meson in the decay B$^0_\mathrm{s}$ $\to$ J/$ψ$K$^0_\mathrm{S}$ is measured using data collected during 2016-2018 with the CMS detector in $\sqrt{s}$ = 13 TeV proton-proton collisions at the LHC, corresponding to an integrated luminosity of 140 fb$^{-1}$. The effective lifetime is determined by performing a two-dimensional unbinned maximum likelihood fit to the B$^0_\mathrm{s}$ meson invariant mass and proper decay time distributions. The resulting value of 1.59 $\pm$ 0.07 (stat) $\pm$ 0.03 (syst) ps is the most precise measurement to date and is in good agreement with the expected value. |
| title | Measurement of the B$^0_\mathrm{s}$ $\to$ J/$ψ$K$^0_\mathrm{S}$ effective lifetime from proton-proton collisions at $\sqrt{s}$ = 13 TeV |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2407.13441 |