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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/220922

Observation of Exotic J/ψφ Resonant Structure in Diffractive Processes in Proton-Proton Collisions

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The first study of J=ψϕ production in diffractive processes in proton-proton collisions is presented. The study is based on an LHCb dataset recorded at center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5 fb−1. The data disfavor a nonresonant J=ψϕ production but are consistent with a resonant model including several resonant states observed previously only in Bþ → J=ψϕKþ decays. The χc0ð4500Þ state is observed with a significance over 6σ and the χc1ð4274Þ is confirmed with a significance of more than 4σ

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AAIJ, R., VAZQUEZ GOMEZ, R., MAURICIO, J., MARIN BENITO, Carla, MANERA ESCALERO, Rafel, LÓPEZ HUERTAS, Albert, LOBO SALVIA, Aniol, GRAUGÉS POUS, Eugeni, GOMEZ FERNANDEZ, S., GIOVENTÙ, Alessandra, GIRONELLA GIRONELL, Pere, GARRIDO BELTRAN, Lluís, GARCIA MORENO, Paula, COMERMA-MONTELLS, Albert, CALEFICE, Lukas, LHCb Collaboration. Observation of Exotic J/ψφ Resonant Structure in Diffractive Processes in Proton-Proton Collisions. _Physical Review Letters_. 2025. Vol. 134, núm. 3, pàgs. 1-12. [consulta: 21 de gener de 2026]. ISSN: 0031-9007. [Disponible a: https://hdl.handle.net/2445/220922]

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