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

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 consis...

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Detalles Bibliográficos
Autores: 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
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/220922
Acceso en línea:https://hdl.handle.net/2445/220922
Access Level:acceso abierto
Palabra clave:Cromodinàmica quàntica
Col·lisions (Física)
Mesons (Física nuclear)
Quantum chromodynamics
Collisions (Physics)
Mesons (Nuclear physics)
Descripción
Sumario: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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