@Article{LHCbCollaborationAaij_etal2021,
author="LHCb Collaboration (Aaij, R. et al
and Henry, L.
and Jashal, B. K.
and Martinez-Vidal, F.
and Oyanguren, A.
and Remon Alepuz, C.
and Ruiz Vidal, J.",
title="Study of B-s(0) -> J/psi pi(+)pi-K+K- decays",
journal="Journal of High Energy Physics",
year="2021",
publisher="Springer",
volume="02",
number="2",
pages="024--34pp",
optkeywords="B physics; Branching fraction; Hadron-Hadron scattering (experiments); Quarkonium; Spectroscopy",
abstract="The decays B-s(0) -> J/psi pi(+)pi-K+K- are studied using a data set corresponding to an integrated luminosity of 9 fb(-1), collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13TeV. The decays B-s(0) -> J/psi K*(K) over bar *0 and B-s(0) -> chi(c1)(3872)K+K-, where the K+K- pair does not originate from a phi meson, are observed for the first time. Precise measurements of the ratios of branching fractions between intermediate chi(c1)(3872)phi, J/psi K*0 (K) over bar *0, psi(2S)phi and chi(c1)(3872)K+K- states are reported. A structure, denoted as X(4740), is observed in the J/psi phi mass spectrum and, assuming a Breit-Wigner parameterisation, its mass and width are determined to be m(X(4740)) = 4741 +/- 6 +/- 6 MeV/c(2), Gamma(X(4740)) = 53 +/- 15 +/- 11MeV, where the first uncertainty is statistical and the second is systematic. In addition, the most precise single measurement of the mass of the B-s(0) meson is performed and gives a value of m(Bs)(0) = 5366.98 +/- 0.07 +/- 0.13MeV/c(2).",
optnote="WOS:000614815700001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4731), last updated on Mon, 15 Mar 2021 08:34:02 +0000",
issn="1029-8479",
doi="10.1007/JHEP02(2021)024",
opturl="https://arxiv.org/abs/2011.01867",
opturl="https://doi.org/10.1007/JHEP02(2021)024",
language="English"
}