The first study of J/Psi Phi 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/PsiPhi production but are consistent with a resonant model including several resonant states observed previously only in B+->J/Psi Phi K+ decays. The Chi_c0(4500) state is observed with a significance over 6sigma and the Chic1(4274) is confirmed with a significance of more than 4 sigma.
Observation of Exotic J/PsiPhi Resonant Structure in Diffractive Processes in Proton-Proton Collisions
Kleijne N.Membro del Collaboration Group
;Morello M. J.Membro del Collaboration Group
;Passaro D.Membro del Collaboration Group
;Pica L.Membro del Collaboration Group
;Ribatti R.Membro del Collaboration Group
;Riccardi D.Membro del Collaboration Group
;
2025
Abstract
The first study of J/Psi Phi 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/PsiPhi production but are consistent with a resonant model including several resonant states observed previously only in B+->J/Psi Phi K+ decays. The Chi_c0(4500) state is observed with a significance over 6sigma and the Chic1(4274) is confirmed with a significance of more than 4 sigma.File in questo prodotto:
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PhysRevLett.134.031902.pdf
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