Hayrapetyan, A.Tumasyan, A.Adam, W.Andrejkovic, J. W.Bergauer, T.Chatterjee, S.Zhokin, A.2025-05-312025-05-3120240031-90071079-711410.1103/PhysRevLett.132.111901https://doi.org/10.1103/PhysRevLett.132.111901https://hdl.handle.net/20.500.14517/7921Battilana, Carlo/0000-0002-3753-3068; Lampen, Tapio/0000-0002-8398-4249; Lassila-Perini, Kati/0000-0002-5502-1795; Lehti, Sami/0000-0003-1370-5598; Asenov, Patrick/0000-0003-2379-9903; Akgun, Bora/0000-0001-8888-3562; Mastrapasqua, Vincenzo/0000-0002-9082-5924; Grunewald, Martin/0000-0002-5754-0388; Wuchterl, Sebastian/0000-0001-9955-9258; D'Alessandro, Raffaello/0000-0001-7997-0306; Cuevas Maestro, Francisco Javier/0000-0001-5080-0821; Cardini, Andrea/0000-0003-1803-0999; Brucken, Jens Erik/0000-0001-6066-8756; Tuominen, Eija/0000-0002-7073-7767; Calderon, Dr. Alicia/0000-0002-7205-2040; Tapper, Alexander/0000-0003-4543-864X; Bharthuar, Shudhashil/0000-0001-5871-9622; Kara, Ozgun/0000-0002-4661-0096; Osterberg, Kenneth/0000-0003-4807-0414; Voutilainen, Mikko/0000-0002-5200-6477; Gonzalez Fernandez, Juan Rodrigo/0000-0002-4825-8188; Martinez Rivero, Celso/0000-0002-3224-956X; Siikonen, Hannu/0000-0003-2039-5874; Sunar Cerci, Deniz/0000-0002-5412-4688; De La Cruz, Begona/0000-0001-9057-5614; Fasanella, Daniele/0000-0002-2926-2691; Kaur, Harjot/0000-0002-8659-7092; Linden, Tomas/0009-0002-4847-8882; /0000-0002-1153-816X; Luukka, Panja/0000-0003-2340-4641; Tuominiemi, Jorma/0000-0003-0386-8633; Gerosa, Raffaele/0000-0001-8359-3734; Kirschenmann, Henning/0000-0001-7369-2536; Rahatlou, Shahram/0000-0001-9794-3360; Venditti, Rosamaria/0000-0001-6925-8649; Kilminster, Benjamin/0000-0002-6657-0407; Ramos, Dayron/0000-0002-7165-1017; Heikkila, Jaana/0000-0002-0538-1469; Myllymaki, Mikael/0000-0003-0510-3810; Radogna, Raffaella/0000-0002-1094-5038; Cunqueiro, Leticia/0000-0001-6764-5370; Schieck, Jochen/0000-0002-1058-8093; Giommi, Luca/0000-0003-3539-4313; Tcherniaev, Evgueni/0000-0002-3685-0635; Martikainen, Laura/0000-0003-1609-3515; Colaleo, Anna/0000-0002-0711-6319; Walkingshaw Pass, Katie/0009-0005-4885-7016; Viinikainen, Jussi/0000-0003-2530-4265; Cipriani, Marco/0000-0002-0151-4439; Della Ricca, Giuseppe/0000-0003-2831-6982; Havukainen, Joona Juhani/0000-0003-2898-6900; Navarrete Ramos, Efren/0000-0002-5180-4020; Kim, Minsuk/0000-0003-0392-8691; Tuve', Cristina/0000-0003-0739-3153; Osherson, Marc/0000-0002-9760-9976; Hall, Geoffrey/0000-0002-6299-8385; Bunkowski, Karol/0000-0001-6371-9336; Barria, Patrizia/0000-0002-3924-7380; Pesaresi, Mark/0000-0002-9759-1083; Garcia, Francisco/0000-0002-4023-7964A search is reported for near-threshold structures in the J=psi J=psi invariant mass spectrum produced in proton-proton collisions at ffiffi s p 1/4 13 TeV from data collected by the CMS experiment, corresponding to an integrated luminosity of 135 fb-1. Three structures are found, and a model with quantum interference among these structures provides a good description of the data. A new structure is observed with a local significance above 5 standard deviations at a mass of 6638 thorn 43 -38 ostat thorn thorn 16 -31 osyst thorn MeV. Another structure with even higher significance is found at a mass of 6847 thorn 44 -28 ostat thorn thorn 48 -20 osyst thorn MeV, which is consistent with the Xo6900 thorn resonance reported by the LHCb experiment and confirmed by the ATLAS experiment. Evidence for another new structure, with a local significance of 4.7 standard deviations, is found at a mass of 7134 thorn 48 -25 ostat thorn thorn 41 -15 osyst thorn MeV. Results are also reported for a model without interference, which does not fit the data as well and shows mass shifts up to 150 MeV relative to the model with interferenceeninfo:eu-repo/semantics/openAccessArticleQ1Q113211WOS:00120210350000138563916