biostudies-literatureUnknown13(1)LHCb collaborationQuantum chromodynamics, the theory of the strong force, describes interactions of coloured quarks and gluons and the formation of hadronic matter. Conventional hadronic matter consists of baryons and mesons made of three quarks and quark-antiquark pairs, respectively. Particles with an alternative quark content are known as exotic states. Here a study is reported of an exotic narrow state in the D⁰D⁰π⁺ mass spectrum just below the D^*+D⁰ mass threshold produced in proton-proton collisions collected with the LHCb detector at the Large Hadron Collider. The state is consistent with the ground isoscalar [Formula: see text] tetraquark with a quark content of [Formula: see text] and spin-parity quantum numbers J^P = 1⁺. SNature communications3351https://www.ebi.ac.uk/biostudies/studies/S-EPMC9203551biostudies-literatureStudy of the doubly charmed tetraquark [Formula: see text].PMC9203551Wilson FFLane RSchael SCogneras EIvshin KZavertyaev MFischer KMPlana BGCastro JLMillard EVolle FCKirn TDownes AGYuan XMoron JCarniti PEscher SVan Hulse CBEsen SKorolev MDe Miranda JMSatriano CGaspar CCali SBencivenni GMauri AUnverzagt DJChobanova VMcconnell LZhu ZQi HStanislaus SRotondo MVidal JRYu JPanshin GZunica GPlacinta VCarli IBarter WKenzie MDuk VVincent PGuth AGolubkov DPetrucci SPullen HDerkach DLamas MRZhu XBack JJLacarrere Dd'Argent PMuller KTrifonova EAliouche ZDiaz MVMazurek MMagalhaes PCLima VFMitchell SESazak HSzumlak TTou DYMurray DBian LD'Ambrosio CBruch DVFleuret FAtzeni MPham TTHBoettcher TChen SDong CAbrantes FGLovell GHPawley CJMaltsev TByczynski WDe Paula LGarcia OBChen CDembinski HPCoco VZhukov VSavrina DCardini ACrkovska JMuller DCapelli SMatev RTanner ARYushchenko OGobel CMaev OMa RMarshall 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OMarconi UCalladine RCadeddu SCartelle PAMcCann MGarcia LMPuill VRios CSSwallow PNClarke PELTorreira AGPromberger LGrabowski JPBezshyiko IMohan LRMMartelli GGras CSManuzzi DUrsov EHadavizadeh TWhite DJTobin MMackowiak PMulder MAnderlini LHaefeli GNolte NSQin NShchutska LHaen CQin JDurante PPlews JPerazzini SCongedo LOvsiannikova TDzyuba AViemann HSchiller MBobulska DCharles MSoares MFrei Cvan Beuzekom MGiambastiani LVagner AZonneveld JBRachwal BKravchuk LQian WDai LJashal BKCogan JHuang WHuang XButkevich AForty ROlivares MEMathad ACasse GLu YPadeken KOStraticiuc MWang CCojocariu LDe Serio MMountain RMinotti ASchmitt SThomson KAWang JTully AKitouni OWu HMohammed RASkidmore NWang MGligorov VVAkar SKarpov MRodriguez PBFeo MWang RFitzgerald DSWang YWang ZEk-In SNikitin NCorredoira IQuezada AFCMajewski MWVieira DSerra NMadejczyk ORicciardi SLopez JARKeller DMStagni FVenkateswaran AKrzemien WBenito CMMancinelli GHasse CCobbledick JLRodrigues FFHennequin AMLane JJChubykin AVidal FMLHCb collaborationChefdeville MStrekalina DGallego FJAMorandin MBelyaev IGorelov IVGilman ALSpaan BKadavath SHKGonzalo ABSarpis GVecchi SOnderwater CJGAudurier BDeschamps OSestini LAkiba KCfalseStudy of the doubly charmed tetraquark [Formula: see text].Quantum chromodynamics, the theory of the strong force, describes interactions of coloured quarks and gluons and the formation of hadronic matter. Conventional hadronic matter consists of baryons and mesons made of three quarks and quark-antiquark pairs, respectively. Particles with an alternative quark content are known as exotic states. Here a study is reported of an exotic narrow state in the D⁰D⁰π⁺ mass spectrum just below the D^*+D⁰ mass threshold produced in proton-proton collisions collected with the LHCb detector at the Large Hadron Collider. The state is consistent with the ground isoscalar [Formula: see text] tetraquark with a quark content of [Formula: see text] and spin-parity quantum numbers J^P = 1⁺. S2022-01-01T00:00:00Z2022 Jun2025-04-19T17:44:11.439Z2024-11-20T06:51:25.756ZS-EPMC92035513571073910.1038/s41467-022-30206-w