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2025-01-24

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/220922

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

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https://doi.org/10.1103/PhysRevLett.134.031902

Abstract

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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Cromodinàmica quàntica, Col·lisions (Física), Mesons (Física nuclear)

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Quantum chromodynamics, Collisions (Physics), Mesons (Nuclear physics)

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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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: 10 of June of 2026]. Available at: https://hdl.handle.net/2445/220922

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