PoS - Proceedings of Science
Volume 385 - 10th International Workshop on Charm Physics (CHARM2020) - Plenary programme
Rare semileptonic charm D decays and possible new physics in charm
S.Β Fajfer
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Pre-published on: September 13, 2021
Published on: β€”
Abstract
I review Standard Model contributions to 𝑐 β†’ 𝑒𝑙+π‘™βˆ’ and 𝑐 β†’ 𝑒 invisibles transitions in the exclu- sive rare 𝐷 β†’ 𝑃𝑙+π‘™βˆ’, 𝐷 β†’ 𝑃1𝑃2𝑙+π‘™βˆ’, 𝐷 β†’ missing energy, and 𝐷 β†’ 𝑃 missing energy decays. Then, I discuss New Physics effects in these processes, using low-energy existing constraints, as the experimental bound on B(𝐷0 β†’ πœ‡+πœ‡βˆ’), 𝐷0 βˆ’ 𝐷 Μ„0 oscillations. I compare them with the contributions allowed by the experimental limits on the rates for 𝐷 β†’ 𝑃𝑙+π‘™βˆ’, 𝐷 β†’ 𝑃1𝑃2𝑙+π‘™βˆ’, and 𝐷 β†’ missing energy decays.
DOI: https://doi.org/10.22323/1.385.0017
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