Observation of an exotic narrow doubly charmed tetraquark

Conventional, hadronic matter consists of baryons and mesons made of three quarks and a quark–antiquark pair, respectively. 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,...

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Detalles Bibliográficos
Autores: LHCb Collaboration, Aaij, R., Adeva Andany, Bernardo, Baladrón Rodríguez, Pablo, Boente García, Óscar, Brea Rodríguez, Alexandre, Casais Vidal, Adrián, Chobanova, Veronika, Cid Vidal, Xabier, Corredoira Fernández, Imanol, Dalseno, Jeremy, Dieste Maronas, L., Fernandez Prieto, Antonio, Gallas Torreira, Abraham, García Plana, Beatriz, Gioventù, Alessandra, Lomba Castro, Julián, López Solino, Saúl, Martínez Santos, Diego, Mombächer, Titus, Pereiro Castro, Asier, Pló Casasús, Máximo, Prouve, Claire, Rodríguez Rodríguez, Efrén, Romero Lamas, Marcos, Romero Vidal, Antonio, Ruiz Fernandez, Ramón Ángel, Saborido Silva, Juan José, Santamarina Ríos, Cibrán, Sellam, Sara, Vázquez Regueiro, Pablo, Álvarez Cartelle, Paula, Vieites Díaz, María
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universidad de Santiago de Compostela (USC)
Repositorio:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
Idioma:inglés
OAI Identifier:oai:minerva.usc.gal:10347/45039
Acceso en línea:https://hdl.handle.net/10347/45039
Access Level:acceso abierto
Palabra clave:Spectroscopy
Heavy flavour
LHCb
Hadron colliders
2290 Física altas energías
Descripción
Sumario:Conventional, hadronic matter consists of baryons and mesons made of three quarks and a quark–antiquark pair, respectively. 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 and a quark. This exotic state has a mass of approximately 3,875 MeV and manifests as a narrow peak in the mass spectrum of D0D0pi+ mesons just below the D*+D0 mass threshold. The near-threshold mass together with the narrow width reveals the resonance nature of the state

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