Observation of an exotic narrow doubly charmed tetraquark

LHCb Collaboration

Research output: Contribution to journalArticlepeer-review

170 Scopus citations


Conventional, hadronic matter consists of baryons and mesons made of three quarks and a quark–antiquark pair, respectively1,2. Here, we report the observation of a hadronic state containing four quarks in the Large Hadron Collider beauty experiment. This so-called tetraquark contains two charm quarks, a u¯ and a d¯ quark. This exotic state has a mass of approximately 3,875 MeV and manifests as a narrow peak in the mass spectrum of D0D0π+ mesons just below the D*+D0 mass threshold. The near-threshold mass together with the narrow width reveals the resonance nature of the state.

Original languageEnglish (US)
Pages (from-to)751-754
Number of pages4
JournalNature Physics
Issue number7
StatePublished - Jul 2022

ASJC Scopus subject areas

  • General Physics and Astronomy


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