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New Structures in the J/J/ Mass Spectrum in Proton-Proton Collisions at Vs = 13 TeV

Abstract: A search is reported for near-threshold structures in the Formula Presented invariant mass spectrum produced in proton-proton collisions at Formula Presented from data collected by the CMS experiment, corresponding to an integrated luminosity of Formula Presented. 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 Formula Presented. Another structure with even higher significance is found at a mass of Formula Presented, which is consistent with the Formula Presented 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 Formula Presented. 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 interference.

 Fuente: Physical Review Letters, 2024, 132(11), 111901

 Publisher: American Physical Society

 Publication date: 01/03/2024

 No. of pages: 20

 Publication type: Article

 DOI: 10.1103/PhysRevLett.132.111901

 ISSN: 0031-9007,1079-7114

 Publication Url: https://doi.org/10.1103/PhysRevLett.132.111901

Autoría

HAYRAPETYAN, A.

SERGIO BLANCO FERNANDEZ

JAVIER ANDRES BROCHERO CIFUENTES

MARCOS FERNANDEZ GARCIA

CLARA LASAOSA GARCIA

PABLO MATORRAS CUEVAS

EFREN NAVARRETE RAMOS

CEDRIC GERALD PRIEELS