TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Henry, L.
AU  - Jashal, B. K.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Remon Alepuz, C.
AU  - Ruiz Vidal, J.
PY  - 2021
DA  - 2021//
TI  - Study of B-s(0) -> J/psi pi(+)pi-K+K- decays
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 024
EP  - 34pp
VL  - 02
IS  - 2
PB  - Springer
KW  - B physics
KW  - Branching fraction
KW  - Hadron-Hadron scattering (experiments)
KW  - Quarkonium
KW  - Spectroscopy
AB  - 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).
SN  - 1029-8479
UR  - https://arxiv.org/abs/2011.01867
UR  - https://doi.org/10.1007/JHEP02(2021)024
DO  - 10.1007/JHEP02(2021)024
LA  - English
N1  - WOS:000614815700001
ID  - LHCbCollaborationAaij_etal2021
ER  -