Résumé
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.
| langue originale | Anglais |
|---|---|
| Pages (de - à) | 751-754 |
| Nombre de pages | 4 |
| journal | Nature Physics |
| Volume | 18 |
| Numéro de publication | 7 |
| Les DOIs | |
| état | Publié - 1 juil. 2022 |
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