Observation of the B+ → Jψη'K+ decay
Journal Article
·
· Journal of High Energy Physics (Online)
The B+ → Jψη'K+ decay is observed for the first time using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb-1. The branching fraction of this decay is measured relative to the known branching fraction of the B+ → ψ(2S)K+ decay and found to be $$\frac{\mathcal{B}(B^+ → Jψη'K^+)}{\mathcal{B}(B^+ → ψ(2S)K^+)}$$ = (4.91 ± 0.47 ± 0.29 ± 0.07) X 10-2, where the first uncertainty is statistical, the second is systematic and the third is related to external branching fractions. A first look at the J/ψη' mass distribution is performed and no signal of intermediate resonances is observed.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
- Sponsoring Organization:
- USDOE
- Contributing Organization:
- LHCb collaboration
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 2423038
- Journal Information:
- Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 8 Vol. 2023; ISSN 1029-8479
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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