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Observation of Sizeable ω Contribution to χc1(3872) → π+ π− J/ψ Decays

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  • Additional Information
    • Contributors:
      Aaij, R.; Abdelmotteleb, A.S.W.; Abellan Beteta, C.; Abudin{\'e}n, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C.; Aidala, C.A.; Aiola, S.; Ajaltouni, Z.; Akar, S.; Akiba, K.; Albrecht, J.; Alessio, F.; Alexander, M.; Alfonso Albero, A.; Aliouche, Z.; Alvarez Cartelle, P.; Amato, S.; Amey, J.L.; Amhis, Y.; An, L.; Anderlini, L.; Andersson, M.; Andreianov, A.; Andreotti, M.; Ao, D.; Archilli, F.; Artamonov, A.; Artuso, M.; Arzymatov, K.; Aslanides, E.; Atzeni, M.; Audurier, B.; Bachmann, S.; Bachmayer, M.; Back, J.J.; Bailly-reyre, A.; Baladron Rodriguez, P.; Balagura, V.; Baldini, W.; Baptista de Souza Leite, J.; Barbetti, M.; Barlow, R.J.; Barsuk, S.; Barter, W.; Bartolini, M.; Baryshnikov, F.; Basels, J.M.; Bassi, G.; Batsukh, B.; Battig, A.; Bay, A.; Beck, A.; Becker, M.; Bedeschi, F.; Bediaga, I.B.; Beiter, A.; Belavin, V.; Belin, S.; Bellee, V.; Belous, K.; Belov, I.; Belyaev, I.; Bencivenni, G.; Ben-Haim, E.; Berezhnoy, A.; Bernet, R.; Berninghoff, D.; Bernstein, H.C.; Bertella, C.; Bertolin, A.; Betancourt, C.; Betti, F.; Bezshyiko, Ia.; Bhasin, S.; Bhom, J.; Bian, L.; Bieker, M.S.; Biesuz, N.V.; Bifani, S.; Billoir, P.; Biolchini, A.; Birch, M.; Bishop, F.C.R.; Bitadze, A.; Bizzeti, A.; Bj{\o}rn, M.; Blago, M.P.; Blake, T.; Blanc, F.; Blusk, S.; Bobulska, D.; Boelhauve, J.A.; Boente Garcia, O.; Boettcher, T.; Boldyrev, A.; Bondar, N.
    • Publication Date:
      2023
    • Collection:
      IRIS Università degli Studi di Bologna (CRIS - Current Research Information System)
    • Abstract:
      Resonant structures in the dipion mass spectrum from χc1(3872) → π+ π− J/ψ decays, produced via B+ → K+ χc1(3872) decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb^−1. A sizeable contribution from the isospin conserving χc1(3872) → ω J/ψ decay is established for the first time, (21.4 ± 2.3 ± 2.0)%, with a significance of more than 7.1 σ. The amplitude of isospin violating decay, χc1(3872) → ρ0 J/ψ, relative to isospin conserving decay, χc1(3872) → ω J/ψ, is properly determined, and it is a factor of 6 larger than expected for a pure charmonium state.
    • File Description:
      STAMPA
    • Relation:
      info:eu-repo/semantics/altIdentifier/wos/WOS:001058583400001; volume:108; issue:1; firstpage:1; lastpage:12; numberofpages:12; journal:PHYSICAL REVIEW D; https://hdl.handle.net/11585/952656; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85173253161; https://journals.aps.org/prd/abstract/10.1103/PhysRevD.108.L011103
    • Accession Number:
      10.1103/PhysRevD.108.L011103
    • Online Access:
      https://doi.org/10.1103/PhysRevD.108.L011103
      https://hdl.handle.net/11585/952656
    • Rights:
      info:eu-repo/semantics/openAccess
    • Accession Number:
      edsbas.6878975D