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Title: New Structures in the J/ψJ/ψ Mass Spectrum in Proton-Proton Collisions at √s = 13 TeV
Authors: Hayrapetyan, A
Tumasyan, A
Adam, W
Andrejkovic, JW
Bergauer, T
Chatterjee, S
Damanakis, K
Dragicevic, M
Escalante Del Valle, A
Hussain, PS
Jeitler, M
Mahdavikhorrami, M
Malara, A
Paredes, S
Pétré, L
Postiau, N
Thomas, L
Vanden Bemden, M
Vander Velde, C
Vanlaer, P
De Coen, M
Dobur, D
Hong, Y
Knolle, J
Lambrecht, L
Mestdach, G
Rendón, C
Samalan, A
Skovpen, K
Van Den Bossche, N
Wezenbeek, L
Benecke, A
Bruno, G
Caputo, C
Delaere, C
Donertas, IS
Giammanco, A
Jaffel, K
Jain, S
Lemaitre, V
Lidrych, J
Mastrapasqua, P
Mondal, K
Tran, TT
Wertz, S
Alves, GA
Coelho, E
Hensel, C
Menezes De Oliveira, T
Moraes, A
Rebello Teles, P
Soeiro, M
Aldá Júnior, WL
Alves Gallo Pereira, M
Barroso Ferreira Filho, M
Brandao Malbouisson, H
Carvalho, W
Chinellato, J
Da Costa, EM
Da Silveira, GG
Reid, ID
De Jesus Damiao, D
Fonseca De Souza, S
Martins, J
Kyberd, P
Mora Herrera, C
Mota Amarilo, K
Khan, A
Mundim, L
Cole, JE
Coldham, K
Krammer, N
Liko, D
Mikulec, I
Schieck, J
Schöfbeck, R
Schwarz, D
Sonawane, M
Templ, S
Waltenberger, W
Wulz, CE
Darwish, MR
Janssen, T
Van Mechelen, P
Bols, ES
D’Hondt, J
Dansana, S
De Moor, A
Delcourt, M
El Faham, H
Lowette, S
Makarenko, I
Müller, D
Sahasransu, AR
Tavernier, S
Tytgat, M
Van Putte, S
Vannerom, D
Clerbaux, B
De Lentdecker, G
Favart, L
Hohov, D
Jaramillo, J
Khalilzadeh, A
Lee, K
Keywords: exotic mesons;heavy mesons;hadron colliders;particles and fields
Issue Date: 15-Mar-2024
Publisher: American Physical Society
Citation: Hayrapetyan, A. et al for the benefit of the CMS Collaboration (2024) 'New Structures in the J/ψJ/ψ Mass Spectrum in Proton-Proton Collisions at √s = 13 TeV', Physical Review Letters, 2024, 132 (11), 111901, pp. 1 - 20. doi: 10.1103/PhysRevLett.132.111901.
Abstract: A search is reported for near-threshold structures in the Formula Presented invariant mass spectrum produced in proton-proton collisions at √s = 13 TeV from data collected by the CMS experiment, corresponding to an integrated luminosity of 135 fb−1. Three structures are found, and a model with quantum interference among these structures provides a good description of the data. A new structure is observed with a local significance above 5 standard deviations at a mass of 6638 +43−38(stat)+16−31(syst) MeV. Another structure with even higher significance is found at a mass of 6847 +44−28(stat)+48−20(syst) MeV,, which is consistent with the X (6900) resonance reported by the LHCb experiment and confirmed by the ATLAS experiment. Evidence for another new structure, with a local significance of 4.7 standard deviations, is found at a mass of 7134 +48−25(stat)+41−15(syst) MeV.. Results are also reported for a model without interference, which does not fit the data as well and shows mass shifts up to 150 MeV relative to the model with interference.
Description: Supplemental Material: The auxiliary material includes the J/ J/ invariant mass spectrum for the full range of the fit, as well as a direct comparison with the results from LHCb by using their two principal models is available online at: .
The accepted manuscript is available at OSTI, OSTI ID: 1988522 Report Number(s): CMS-BPH-21-003; CERN-EP-2023-109; FERMILAB-PUB-23-315-CMS; arXiv:2306.07164;
ISSN: 0031-9007
Other Identifiers: ORCiD: A. Tumasyan
ORCiD: Joanne E Cole
ORCiD: Akram Khan
ORCiD: Paul Kyberd
ORCiD: Ivan D Reid
Appears in Collections:Dept of Electronic and Electrical Engineering Research Papers

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