Publication

Observation of an exotic narrow doubly charmed tetraquark

Lesya Shchutska
2022
Journal Articles

Abstract

Conventional, hadronic matter consists of baryons and mesons made of three quarks and a quark–antiquark pair, respectively1,21,2. 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‾u and a d‾d quark. This exotic state has a mass of approximately 3,875 MeV and manifests as a narrow peak in the mass spectrum of D00D00π++ mesons just below the D∗+∗+D00 mass threshold. The near-threshold mass together with the narrow width reveals the resonance nature of the state.

Official source

https://infoscience.epfl.ch/entities/publication/fb90b7ef-8d16-4e55-ae50-361aaef9e5ae

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Observation of an exotic narrow doubly charmed tetraquark

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