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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/132633
First Observation of the Rare Purely Baryonic Decay B0→p¯p
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The first observation of the decay of a B0 meson to a purely baryonic final state, B0→p p ¯ , is reported. The proton-proton collision data sample used was collected with the LHCb experiment at center-of-mass energies of 7 and 8 TeV and corresponds to an integrated luminosity of 3.0 fb-1. The branching fraction is determined to be B (B0→p p ¯ )=(1.25 ±0.27 ±0.18 )×10-8 , where the first uncertainty is statistical and the second systematic. The decay mode B0→p p ¯ is the rarest decay of the B0 meson observed to date. The decay Bs0→p p ¯ is also investigated. No signal is seen and the upper limit B (Bs0→p p ¯ )<1.5 ×10-8 at 90% confidence level is set on the branching fraction.
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ALFONSO ALBERO, Alejandro, et al. First Observation of the Rare Purely Baryonic Decay B0→p¯p. Physical Review Letters. 2017. Vol. 119, num. 23, pags. 232001. ISSN 0031-9007. [consulted: 6 of June of 2026]. Available at: https://hdl.handle.net/2445/132633