Search for the Rare Decay (Formula presented) in Proton-Proton Collisions at (Formula presented)

  • CMS Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

A search for the rare decay (Formula presented) is reported using proton-proton collision events at (Formula presented) collected by the CMS detector in 2022-2023, corresponding to an integrated luminosity of (Formula presented). 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 (Formula presented) mesons obtained from (Formula presented) decays. No significant excess is observed. A limit on the branching fraction of (Formula presented) 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.

Original languageEnglish
Article number151803
JournalPhysical Review Letters
Volume135
Issue number15
DOIs
Publication statusPublished - 10 Oct 2025

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