BSM reach of rare charm decays, including the rising star $Λ_c\to pμ^+μ^-$
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866916734893555712 |
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| author | Gisbert, Hector Hiller, Gudrun Suelmann, Dominik |
| author_facet | Gisbert, Hector Hiller, Gudrun Suelmann, Dominik |
| contents | We perform the first global fit of rare charm transitions using recent data on $D^0\to μ^+μ^-$, $D^+\toπ^+μ^+μ^-$, $Λ_c\to pμ^+μ^-$ and $D^0\toπ^+π^-μ^+μ^-$ decays, including angular observables. We work out constraints on new physics in the framework of the weak effective field theory. While angular observables in $D^0\toπ^+π^-μ^+μ^-$ decays provide sensitivities to different QCD models, future null tests in $Λ_c\to p μ^+μ^-$ look more promising to extract limits because of less hadronic uncertainties. This marks $Λ_c\to p μ^+μ^-$ as the rising star of rare charm decays. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_07954 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | BSM reach of rare charm decays, including the rising star $Λ_c\to pμ^+μ^-$ Gisbert, Hector Hiller, Gudrun Suelmann, Dominik High Energy Physics - Phenomenology High Energy Physics - Experiment We perform the first global fit of rare charm transitions using recent data on $D^0\to μ^+μ^-$, $D^+\toπ^+μ^+μ^-$, $Λ_c\to pμ^+μ^-$ and $D^0\toπ^+π^-μ^+μ^-$ decays, including angular observables. We work out constraints on new physics in the framework of the weak effective field theory. While angular observables in $D^0\toπ^+π^-μ^+μ^-$ decays provide sensitivities to different QCD models, future null tests in $Λ_c\to p μ^+μ^-$ look more promising to extract limits because of less hadronic uncertainties. This marks $Λ_c\to p μ^+μ^-$ as the rising star of rare charm decays. |
| title | BSM reach of rare charm decays, including the rising star $Λ_c\to pμ^+μ^-$ |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2505.07954 |