@Article{LHCbCollaborationAaij_etal2022,
author="LHCb Collaboration (Aaij, R. et al
and Jashal, B. K.
and Martinez-Vidal, F.
and Oyanguren, A.
and Remon Alepuz, C.
and Ruiz Vidal, J.",
title="Study of charmonium and charmonium-like contributions in B+ -> J/psi eta K+ decays",
journal="Journal of High Energy Physics",
year="2022",
publisher="Springer",
volume="04",
number="4",
pages="046--29pp",
optkeywords="B Physics; Branching fraction; Hadron-Hadron Scattering; Quarkonium",
abstract="A study of B+ -> J/psi eta K+ decays, followed by J/psi -> mu(+)mu(-) and eta -> gamma gamma, 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/psi eta mass spectrum is investigated for contributions from charmonia and charmonium-like states. Evidence is found for the B+ -> (psi(2)(3823) -> J/psi eta)K+ and B+ -> (psi(4040) -> J/psi eta)K+ decays with significance of 3.4 and 4.7 standard deviations, respectively. This constitutes the first evidence for the psi(2)(3823) -> J/psi eta decay.",
optnote="WOS:000781968600001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5196), last updated on Mon, 25 Apr 2022 14:13:06 +0000",
issn="1029-8479",
doi="10.1007/JHEP04(2022)046",
opturl="https://arxiv.org/abs/2202.04045",
opturl="https://doi.org/10.1007/JHEP04(2022)046",
language="English"
}