Observation of an exotic narrow doubly charmed tetraquark

Roel Aaij; Ahmed Sameh Wagih Abdelmotteleb; Carlos Abellán Beteta; Fernando Jesus Abudinen Gallego; Thomas Ackernley; Bernardo Adeva; Marco Adinolfi; Hossein Afsharnia; Christina Agapopoulou; Christine Angela Aidala; Salvatore Aiola; Ziad Ajaltouni; Simon Akar; Johannes Albrecht; Federico Alessio; Michael Alexander; Alejandro Alfonso Albero; Zakariya Aliouche; Georgy Alkhazov; Paula Alvarez Cartelle; Sandra Amato; Jake Lewis Amey; Yasmine Amhis; Liupan An; Lucio Anderlini; Aleksei Andreianov; Mirco Andreotti; Flavio Archilli; Alexander Artamonov; Marina Artuso; Kenenbek Arzymatov; Elie Aslanides; Michele Atzeni; Benjamin Audurier; Sebastian Bachmann; Marie Bachmayer; John Back; Pablo Baladron Rodriguez; Vladislav Balagura; Wander Baldini; Juan Baptista Leite; Matteo Barbetti; Roger Barlow; Sergey Barsuk; William Barter; Matteo Bartolini; Fedor Baryshnikov; Jan-Marc Basels; Saliha Bashir; Giovanni Bassi; Baasansuren Batsukh; Alexander Battig; Aurelio Bay; Anja Beck; Maik Becker; Franco Bedeschi; Ignacio Bediaga; Andrew Beiter; Vladislav Belavin; Samuel Belin; Violaine Bellee; Konstantin Belous; Ilia Belov; Ivan Belyaev; Giovanni Bencivenni; Eli Ben-Haim; Alexander Berezhnoy; Roland Bernet; Daniel Berninghoff; Harris Conan Bernstein; Claudia Bertella; Alessandro Bertolin; Christopher Betancourt; Federico Betti; Ia Bezshyiko; Iaroslava Bezshyiko; Srishti Bhasin; Jihyun Bhom; Lingzhu Bian; Martin Stefan Bieker; Simone Bifani; Pierre Billoir; Matthew Birch; Fionn Caitlin Ros Bishop; Alexander Bitadze; Andrea Bizzeti; Mikkel Bjørn; Michele Piero Blago; Thomas Blake; Frederic Blanc; Steven Blusk; Dana Bobulska; Julian Alexander Boelhauve; Oscar Boente Garcia; Thomas Boettcher; Alexey Boldyrev; Alexander Bondar; Nikolay Bondar; Silvia Borghi; Maxim Borisyak; LHCb Collaboration; Cesar Luis Da Silva; John Matthew Durham; Eliane Melanie Franziska Epple; Jana Crkovska; Gerd Joachim Kunde; Cameron Thomas Dean

doi:10.1038/s41567-022-01614-y

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Observation of an exotic narrow doubly charmed tetraquark

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Observation of an exotic narrow doubly charmed tetraquark

Roel Aaij, Ahmed Sameh Wagih Abdelmotteleb, Carlos Abellán Beteta, Fernando Jesus Abudinen Gallego, Thomas Ackernley, Bernardo Adeva, Marco Adinolfi, Hossein Afsharnia, Christina Agapopoulou, Christine Angela Aidala, …

Nature physics, Vol.18(7), pp.751-754

07/01/2022

DOI: https://doi.org/10.1038/s41567-022-01614-y

Abstract and subjects

High Energy Physics - Experiment

Physics

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 $\overline{{{u}}}$ and a $\overline{{{d}}}$ quark. This exotic state has a mass of approximately 3,875 MeV and manifests as a narrow peak in the mass spectrum of D$^{0}$D$^{0}$π$^{+}$ 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.

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Title: Observation of an exotic narrow doubly charmed tetraquark
Authors/Creators - name: Roel Aaij
Ahmed Sameh Wagih Abdelmotteleb
Carlos Abellán Beteta
Fernando Jesus Abudinen Gallego
Thomas Ackernley
Bernardo Adeva
Marco Adinolfi
Hossein Afsharnia
Christina Agapopoulou
Christine Angela Aidala
Salvatore Aiola
Ziad Ajaltouni
Simon Akar
Johannes Albrecht
Federico Alessio
Michael Alexander
Alejandro Alfonso Albero
Zakariya Aliouche
Georgy Alkhazov
Paula Alvarez Cartelle
Sandra Amato
Jake Lewis Amey
Yasmine Amhis
Liupan An
Lucio Anderlini
Aleksei Andreianov
Mirco Andreotti
Flavio Archilli
Alexander Artamonov
Marina Artuso
Kenenbek Arzymatov
Elie Aslanides
Michele Atzeni
Benjamin Audurier
Sebastian Bachmann
Marie Bachmayer
John Back
Pablo Baladron Rodriguez
Vladislav Balagura
Wander Baldini
Juan Baptista Leite
Matteo Barbetti
Roger Barlow
Sergey Barsuk
William Barter
Matteo Bartolini
Fedor Baryshnikov
Jan-Marc Basels
Saliha Bashir
Giovanni Bassi
Baasansuren Batsukh
Alexander Battig
Aurelio Bay
Anja Beck
Maik Becker
Franco Bedeschi
Ignacio Bediaga
Andrew Beiter
Vladislav Belavin
Samuel Belin
Violaine Bellee
Konstantin Belous
Ilia Belov
Ivan Belyaev
Giovanni Bencivenni
Eli Ben-Haim
Alexander Berezhnoy
Roland Bernet
Daniel Berninghoff
Harris Conan Bernstein
Claudia Bertella
Alessandro Bertolin
Christopher Betancourt
Federico Betti
Ia Bezshyiko
Iaroslava Bezshyiko
Srishti Bhasin
Jihyun Bhom
Lingzhu Bian
Martin Stefan Bieker
Simone Bifani
Pierre Billoir
Matthew Birch
Fionn Caitlin Ros Bishop
Alexander Bitadze
Andrea Bizzeti
Mikkel Bjørn
Michele Piero Blago
Thomas Blake
Frederic Blanc
Steven Blusk
Dana Bobulska
Julian Alexander Boelhauve
Oscar Boente Garcia
Thomas Boettcher
Alexey Boldyrev
Alexander Bondar
Nikolay Bondar
Silvia Borghi
Maxim Borisyak
LHCb Collaboration
Cesar Luis Da Silva
John Matthew Durham
Eliane Melanie Franziska Epple
Jana Crkovska
Gerd Joachim Kunde
Cameron Thomas Dean
Publication Details: Nature physics, Vol.18(7), pp.751-754
Publisher: Nature Publishing Group [2005-....]
Number of pages: 4
Language: English
Resource Type: Journal article
DOI: https://doi.org/10.1038/s41567-022-01614-y
Publication ISSN: 1745-2473; 1476-4636