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...

Full description

Authors: 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
Format: Article
Status:Published version
Publication date:2025
Country:España
Institution:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repository:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/220922
Online Access:https://hdl.handle.net/2445/220922
Access Level:Open access
Keyword:Cromodinàmica quàntica
Col·lisions (Física)
Mesons (Física nuclear)
Quantum chromodynamics
Collisions (Physics)
Mesons (Nuclear physics)
Summary: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

Similar Items