New Structures in the J/J/ Mass Spectrum in Proton-Proton Collisions at sqrt[s]=13TeV. Academic Article uri icon

abstract

  • A search is reported for near-threshold structures in the J/J/ invariant mass spectrum produced in proton-proton collisions at sqrt[s]=13TeV from data collected by the CMS experiment, corresponding to an integrated luminosity of 135fb^{-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_{-38}^{+43}(stat)_{-31}^{+16}(syst)MeV. Another structure with even higher significance is found at a mass of 6847_{-28}^{+44}(stat)_{-20}^{+48}(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_{-25}^{+48}(stat)_{-15}^{+41}(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 150MeV relative to the model with interference.

published proceedings

  • Phys Rev Lett

author list (cited authors)

  • Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Chatterjee, S., ... CMS Collaboration.

complete list of 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||Krammer, N||Liko, D||Mikulec, I||Schieck, J||Schöfbeck, R||Schwarz, D||Sonawane, M||Templ, S||Waltenberger, W||Wulz, C-E||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||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, Sa||Lemaitre, V||Lidrych, J||Mastrapasqua, P||Mondal, K||Tran, TT||Wertz, S|

publication date

  • March 2024