%0 Journal Article
%T Study of Bc+ → χc π+ decays
%A LHCb Collaboration (Aaij, R. et al
%A Jaimes Elles, S. J.
%A Jashal, B. K.
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Rebollo De Miguel, M.
%A Sanderswood, I.
%A Zhuo, J.
%J Journal of High Energy Physics
%D 2024
%V 02
%N 2
%I Springer
%@ 1029-8479
%G English
%F LHCbCollaborationAaij_etal2024
%O WOS:001183170300001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=6044), last updated on Sun, 14 Apr 2024 09:39:45 +0000
%X A study of B-c(+) -> chi(c) pi(+) decays is reported using proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13TeV, corresponding to an integrated luminosity of 9 fb(-1). The decay B-c(+) -> chi(c2)pi(+) is observed for the first time, with a significance exceeding seven standard deviations. The relative branching fraction with respect to the B-c(+) -> J/psi pi(+) decay is measured to be BBc+ ->chi c2 pi+/BBc+ -> (J/psi pi+) = 0.37 +/- 0.06 +/- 0.02 +/- 0.01, where the first uncertainty is statistical, the second is systematic, and the third is due to the knowledge of the chi(c2) -> J/psi gamma branching fraction. No significant B-c(+) -> chi(+)(c1 pi) signal is observed and an upper limit for the relative branching fraction for the B-c(+) -> chi(c1)pi(+) and B-c(+) -> chi(c2)pi(+) decays of BBc+ ->chi c1 pi+/BBc+ -> chi(c2)pi(+) < 0.49 is set at the 90% confidence level.
%K B Physics
%K Branching fraction
%K Hadron-Hadron Scattering
%R 10.1007/JHEP02(2024)173
%U https://doi.org/10.1007/JHEP02(2024)173
%P 173-30pp