Study of B+c decays to charmonia and three light hadrons
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13130_2022_Article_17557.pdf
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Author(s)
Aaij, R.
Abdelmotteleb, A. S. W.
Abellán Beteta, C.
Abudinen Gallego, F. J.
Ackernley, T.
Adeva, B.
Adinolfi, M.
Afsharnia, H.
Agapopoulou, C.
Aidala, C. A.
Date Issued
January 13, 2022
Publisher
Springer Berlin Heidelberg
Citation
Journal of High Energy Physics. 2022 Jan 13;2022(1):65
Version
Final published version
Abstract
Abstract
Using proton-proton collision data, corresponding to an integrated luminosity of 9 fb−1 collected with the LHCb detector, seven decay modes of the
B
c
+
$$ {\mathrm{B}}_{\mathrm{c}}^{+} $$
meson into a J/ψ or ψ(2S) meson and three charged hadrons, kaons or pions, are studied. The decays
B
c
+
$$ {\mathrm{B}}_{\mathrm{c}}^{+} $$
→ (ψ(2S) → J/ψπ+π−)π+,
B
c
+
$$ {\mathrm{B}}_{\mathrm{c}}^{+} $$
→ ψ(2S)π+π−π+,
B
c
+
$$ {\mathrm{B}}_{\mathrm{c}}^{+} $$
→ J/ψK+π−π+ and
B
c
+
$$ {\mathrm{B}}_{\mathrm{c}}^{+} $$
→ J/ψK+K−K+ are observed for the first time, and evidence for the
B
c
+
$$ {\mathrm{B}}_{\mathrm{c}}^{+} $$
→ ψ(2S)K+K−π+, decay is found, where J/ψ and ψ(2S) mesons are reconstructed in their dimuon decay modes. The ratios of branching fractions between the different
B
c
+
$$ {\mathrm{B}}_{\mathrm{c}}^{+} $$
decays are reported as well as the fractions of the decays proceeding via intermediate resonances. The results largely support the factorisation approach used for a theoretical description of the studied decays.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1007/JHEP01(2022)065
