A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The J/ψη mass spectrum is investigated for contributions from charmonia and charmonium-like states. Evidence is found for the B+ → (ψ2(3823) → J/ψη)K+ and B+ → (ψ(4040) → J/ψη)K+ decays with significance of 3.4 and 4.7 standard deviations, respectively. This constitutes the first evidence for the ψ2(3823) → J/ψη decay
For a complete list of authors, please look at article.Abstract ...
Abstract A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ−...
Four decay modes of the B+ c meson into a J/ψ meson and multiple charged kaons or pions are studie...
A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset colle...
A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset colle...
A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset colle...
A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset colle...
A study of B+ → J/ψ η K+ decays, followed by J/ψ → μ+ μ− and η → γ γ, is performed using a dataset c...
A study of B+ → J/ψ η K+ decays, followed by J/ψ → μ+ μ− and η → γ γ, is performed using a dataset c...
A study of B+→ J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset collec...
A study of B+→ J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset collec...
A study of B+→ J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset collec...
A study of B+→ J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset collec...
A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset colle...
A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset colle...
For a complete list of authors, please look at article.Abstract ...
Abstract A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ−...
Four decay modes of the B+ c meson into a J/ψ meson and multiple charged kaons or pions are studie...
A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset colle...
A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset colle...
A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset colle...
A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset colle...
A study of B+ → J/ψ η K+ decays, followed by J/ψ → μ+ μ− and η → γ γ, is performed using a dataset c...
A study of B+ → J/ψ η K+ decays, followed by J/ψ → μ+ μ− and η → γ γ, is performed using a dataset c...
A study of B+→ J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset collec...
A study of B+→ J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset collec...
A study of B+→ J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset collec...
A study of B+→ J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset collec...
A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset colle...
A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ− and η → γγ, is performed using a dataset colle...
For a complete list of authors, please look at article.Abstract ...
Abstract A study of B+ → J/ψηK+ decays, followed by J/ψ → μ+μ−...
Four decay modes of the B+ c meson into a J/ψ meson and multiple charged kaons or pions are studie...