@article{0629034607064725aa3872f291fce799,
title = "Observation of Exotic J/ψφ Resonant Structure in Diffractive Processes in Proton-Proton Collisions",
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 B+→J/ψφK+ decays. The χc0(4500) state is observed with a significance over 6σ and the χc1(4274) is confirmed with a significance of more than 4σ.",
author = "{(LHCb Collaboration)} and R. Aaij and Abdelmotteleb, {A. S.W.} and {Abellan Beteta}, C. and F. Abudin{\'e}n and T. Ackernley and Adefisoye, {A. A.} and B. Adeva and M. Adinolfi and P. Adlarson and C. Agapopoulou and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and K. Akiba and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and Z. Aliouche and {Alvarez Cartelle}, P. and R. Amalric and S. Amato and Amey, {J. L.} and Y. Amhis and L. An and L. Anderlini and M. Andersson and A. Andreianov and P. Andreola and M. Andreotti and D. Andreou and A. Anelli and D. Ao and F. Archilli and M. Argenton and {Arguedas Cuendis}, S. and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and B. Audurier and D. Bacher and {Bachiller Perea}, I. and S. Bachmann and M. Bachmayer and Back, {J. J.} and {Baladron Rodriguez}, P. and E. Golobardes and {Valls Canudas}, N. and X. Vilasis-Cardona",
note = "Publisher Copyright: {\textcopyright} 2025 CERN.",
year = "2025",
month = jan,
day = "24",
doi = "10.1103/PhysRevLett.134.031902",
language = "English",
volume = "134",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "3",
}