Observation of an exotic narrow doubly charmed tetraquark

LHCb collaboration

doi:10.1038/s41567-022-01614-y

Observation of an exotic narrow doubly charmed tetraquark

LHCb collaboration

Research output: Contribution to journal › Article › Academic › peer-review

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.

Original language	English
Pages (from-to)	751-754
Number of pages	11
Journal	Nature Physics
Volume	18
Issue number	7
Early online date	1 Jun 2022
DOIs	https://doi.org/10.1038/s41567-022-01614-y
Publication status	Published - Jul 2022

Keywords

MULTIQUARK HADRONS
STATES
BARYONS
MODEL

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10.1038/s41567-022-01614-yLicence: CC BY

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title = "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.",

keywords = "MULTIQUARK HADRONS, STATES, BARYONS, MODEL",

author = "R. Aaij and A.S.W. Abdelmotteleb and C.A. Beteta and F.J.A. Gallego and T. Ackernley and B. Adeva and M. Adinolfi and H. Afsharnia and C. Agapopoulou and C.A. Aidala and S. Aiola and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and A.A. Albero and Z. Aliouche and G. Alkhazov and P.A. Cartelle and S. Amato and J.L. Amey and Y. Amhis and L. An and L. Anderlini and A. Andreianov and M. Andreotti and F. Archilli and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and M. Bachmayer and J.J. Back and P.B. Rodriguez and V. Balagura and W. Baldini and J.B. Leite and M. Barbetti and R.J. Barlow and S. Barsuk and W. Barter and M. Bartolini and \{LHCb collaboration\} and \{De Vries\}, J.A. and M. Merk and C.J. Pawley and K. Vos",

year = "2022",

month = jul,

doi = "10.1038/s41567-022-01614-y",

language = "English",

volume = "18",

pages = "751--754",

journal = "Nature Physics",

issn = "1745-2473",

publisher = "Nature Research",

number = "7",

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TY - JOUR

T1 - Observation of an exotic narrow doubly charmed tetraquark

AU - Aaij, R.

AU - Abdelmotteleb, A.S.W.

AU - Beteta, C.A.

AU - Gallego, F.J.A.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Afsharnia, H.

AU - Agapopoulou, C.

AU - Aidala, C.A.

AU - Aiola, S.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Albero, A.A.

AU - Aliouche, Z.

AU - Alkhazov, G.

AU - Cartelle, P.A.

AU - Amato, S.

AU - Amey, J.L.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreianov, A.

AU - Andreotti, M.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J.J.

AU - Rodriguez, P.B.

AU - Balagura, V.

AU - Baldini, W.

AU - Leite, J.B.

AU - Barbetti, M.

AU - Barlow, R.J.

AU - Barsuk, S.

AU - Barter, W.

AU - Bartolini, M.

AU - LHCb collaboration

AU - De Vries, J.A.

AU - Merk, M.

AU - Pawley, C.J.

AU - Vos, K.

PY - 2022/7

Y1 - 2022/7

N2 - 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.

AB - 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.

KW - MULTIQUARK HADRONS

KW - STATES

KW - BARYONS

KW - MODEL

U2 - 10.1038/s41567-022-01614-y

DO - 10.1038/s41567-022-01614-y

M3 - Article

SN - 1745-2473

VL - 18

SP - 751

EP - 754

JO - Nature Physics

JF - Nature Physics

IS - 7

ER -

Observation of an exotic narrow doubly charmed tetraquark

Abstract

Keywords

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