• Open Access

First Observation of the Rare Purely Baryonic Decay B0pp¯

R. Aaij et al. (LHCb Collaboration)
Phys. Rev. Lett. 119, 232001 – Published 4 December 2017

Abstract

The first observation of the decay of a B0 meson to a purely baryonic final state, B0pp¯, 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 3.0fb1. The branching fraction is determined to be B(B0pp¯)=(1.25±0.27±0.18)×108, where the first uncertainty is statistical and the second systematic. The decay mode B0pp¯ is the rarest decay of the B0 meson observed to date. The decay Bs0pp¯ is also investigated. No signal is seen and the upper limit B(Bs0pp¯)<1.5×108 at 90% confidence level is set on the branching fraction.

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  • Received 7 September 2017

DOI:https://doi.org/10.1103/PhysRevLett.119.232001

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

© 2017 CERN, for the LHCb Collaboration

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
Particles & Fields

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Vol. 119, Iss. 23 — 8 December 2017

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