Search for the Rare Decay D0 → μ+ μ- in Proton-Proton Collisions at √s=13.6 TeV

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10512889" target="_blank" >RIV/00216208:11320/25:10512889 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=KxV1_JtHMz" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=KxV1_JtHMz</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/zc76-rgcp" target="_blank" >10.1103/zc76-rgcp</a>

Result language
angličtina
Original language name
Search for the Rare Decay D0 → μ+ μ- in Proton-Proton Collisions at √s=13.6 TeV
Original language description
A search for the rare decay D-0 -> mu(+) mu(-) is reported using proton-proton collision events at root s = 13.6 TeV collected by the CMS detector in 2022-2023, corresponding to an integrated luminosity of 64.5 fb(-1). This is the first analysis to use a newly developed inclusive dimuon trigger, expanding the scope of the CMS flavor physics program. The search uses D-0 mesons obtained from D*(+) -> D-0 pi(+) decays. No significant excess is observed. A limit on the branching fraction of B(D-0 -> mu(+)mu(-)) < 2.4 x 10(-9) at 95% confidence level is set. This is the most stringent upper limit set on any flavor changing neutral current decay in the charm sector.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10300 - Physical sciences

Project
<a href="/en/project/LM2023040" target="_blank" >LM2023040: Research infrastructure for experiments at CERN</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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