2017/09/30 by LHCb collaboration, R. Aaij, B. Adeva +826 · 1 citation
Physics and Astronomy · #Astrophysics #Baryon #Branching fraction #High-Energy Particle Collisions Research #Luminosity #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevlett.119.232001
published as Phys. Rev. Lett. 119, 232001 (2017) · 'All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-022.html
openalex created_date 2017/09/15 · openalex publication_date 2017/12/04 · arxiv created 2017/12/06 · arxiv updated 2017/12/07 · openalex updated_date 2026/08/06
The first observation of the decay of a B0 meson to a purely baryonic final state, B0\ensuremath→pp, 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^\ensuremath-1. The branching fraction is determined to be B(B0\ensuremath→pp)=(1.25\ifmmode±\else\textpm\fi0.27\ifmmode±\else\textpm\fi0.18)\ifmmode×\else\texttimes\fi10^\ensuremath-8, where the first uncertainty is statistical and the second systematic. The decay mode B0\ensuremath→pp is the rarest decay of the B0 meson observed to date. The decay Bs0\ensuremath→pp is also investigated. No signal is seen and the upper limit B(Bs0\ensuremath→pp)<1.5\ifmmode×\else\texttimes\fi10^\ensuremath-8 at 90% confidence level is set on the branching fraction.