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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Detalhes 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 documento: artigo
Estado:Versão publicada
Data de publicação:2025
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositório:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/220922
Acesso em linha:https://hdl.handle.net/2445/220922
Access Level:Acceso aberto
Palavra-chave:Cromodinàmica quàntica
Col·lisions (Física)
Mesons (Física nuclear)
Quantum chromodynamics
Collisions (Physics)
Mesons (Nuclear physics)
Descrição
Resumo: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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