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Observation of exotic 𝐽/πœ“β’πœ™ resonant structure in diffractive processes in proton-proton collisions

The first study of 𝐽/πœ“β’πœ™ 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 fbβˆ’1. The data disfavor a nonresonant 𝐽/πœ“β’πœ™ production but are cons...

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Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Carus, Leon (Author) , Caspary, Rowina (Author) , Celani, Sara (Author) , Cocha Toapaxi, Carlos (Author) , De Cian, Michel (Author) , Dittmann, Lucas (Author) , Glaser, Fabian (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Herrero Gascón, Paula (Author) , Langenbruch, Christoph (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Morgenthaler, Maurice Pierre (Author) , Ruiz Diaz, Miguel (Author) , Tuci, Giulia (Author) , Uecker, Lennart Henning (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zhao, Ya (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 24 January, 2025
In: Physical review letters
Year: 2025, Volume: 134, Issue: 3, Pages: 1-12
ISSN:1079-7114
DOI:10.1103/PhysRevLett.134.031902
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevLett.134.031902
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.134.031902
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Author Notes:LHCb Collaboration
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Summary:The first study of 𝐽/πœ“β’πœ™ 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 fbβˆ’1. The data disfavor a nonresonant 𝐽/πœ“β’πœ™ production but are consistent with a resonant model including several resonant states observed previously only in 𝐡+→𝐽/πœ“β’πœ™β’πΎ+ decays. The πœ’π‘β’0⁑(4500) state is observed with a significance over 6⁒𝜎 and the πœ’π‘β’1⁑(4274) is confirmed with a significance of more than 4⁒𝜎.
Item Description:LHCb Collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, S. Celani, C.E. Cocha Toapaxi, M. De Cian, F. Glaser, X. Han, S. Hansmann-Menzemer, P. Herrero Gascon, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, M. Ruiz Diaz, G. Tuci, L.H. Ueckert, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, Y. Zhao, A. Zhelezov [und 1067 weitere]
Gesehen am 19.11.2025
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.134.031902

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