Measurement of the Branching Fractions $$\mathcal{B}(B^0 → p\bar{p}p\bar{p})$$ and $$\mathcal{B}(B^0_S → p\bar{p}p\bar{p})$$
Searches for the rare hadronic decays $$B^0 → p\bar{p}p\bar{p}$$ and $$B^0_S → p\bar{p}p\bar{p}$$ are performed using proton-proton collision data recorded by the LHCb experiment and corresponding to an integrated luminosity of 9 fb–1. Significances of 9.3σ and 4.0σ, including statistical and systematic uncertainties, are obtained for the $$B^0 → p\bar{p}p\bar{p}$$ and $$B^0_S → p\bar{p}p\bar{p}$$ signals, respectively. The branching fractions are measured relative to the topologically similar normalization decays B0 → J/ψ(→ $$p\bar{p}$$)K*0(→ K+π–) and B$$^0_s$$→J/ψ(→ $$p\bar{p}$$)$$\phi$$(→K+K–). The branching fractions are measured to be $$\mathcal{B}(B^0 → p\bar{p}p\bar{p})$$ = (2.2 ± 0.4 ± 0.1 ± 0.1)×10–8 and $$\mathcal{B}(B^0_S → p\bar{p}p\bar{p})$$ = (2.3 ± 1.0 ± 0.2 ± 0.1)×10–8. In these measurements, the first uncertainty is statistical, the second is systematic, and the third one is due to the external branching fraction of the normalization channel.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- LHCb Collaboration
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 2423003
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 9 Vol. 131; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Precise determination of the $B^0_S - \bar {B}^0_S$ oscillation frequency
Observation of Λ$^{0}_{b}$ →ψ(2S)pK– and Λ$^{0}_{b}$ →J/ψπ + π–pK– decays and a measurement of the Λ$^{0}_{b}$ baryon mass