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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., et al. Observation of Exotic J/ψφ Resonant Structure in Diffractive Processes in Proton-Proton Collisions. Physical Review Letters. 2025. Vol. 134, num. 3, pags. 1-12. ISSN 0031-9007. [consulted: 23 of May of 2026]. Available at: https://hdl.handle.net/2445/220922

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