Journal article
Observation of an exotic narrow doubly charmed tetraquark
- Abstract:
- Conventional, hadronic matter consists of baryons and mesons made of three quarks and a quark-antiquark pair, respectively(1,2). 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) over bar and a (d) over tilde quark. This exotic state has a mass of approximately 3,875 MeV and manifests as a narrow peak in the mass spectrum of (DD0)-D-0 pi(+) mesons just below the D*D-+(0) mass threshold. The near-threshold mass together with the narrow width reveals the resonance nature of the state
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.9MB, Terms of use)
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- Publisher copy:
- 10.1038/s41567-022-01614-y
- Publication website:
- https://aisberg.unibg.it/bitstream/10446/267535/1/document.pdf
Authors
- Publisher:
- Nature Research
- Journal:
- Nature Physics More from this journal
- Volume:
- 18
- Issue:
- 7
- Pages:
- 751-754
- Publication date:
- 2022-06-16
- DOI:
- EISSN:
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1745-2481
- ISSN:
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1745-2473
- Language:
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English
- Keywords:
- Pubs id:
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1266946
- Local pid:
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pubs:1266946
- Source identifiers:
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W4282958578
- Deposit date:
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2026-04-27
- ARK identifier:
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Terms of use
- Copyright date:
- 2022
- Licence:
- CC Attribution (CC BY)
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