Oscillations of mesons as a probe of decays with unreconstructed particles
arXiv:1911.12729 · doi:10.1007/JHEP02(2020)163
Abstract
A new experimental technique to study the decays of mesons into final states involving unreconstructable particles is proposed. The method uses a characteristic feature of fast flavour oscillations of mesons. Analysis of the oscillation-frequency spectrum of partially reconstructed flavour-tagged decays provides information about the mass spectrum of unreconstructed decay products and suppresses any background that does not come from the decays of mesons.
17 pages, 11 figures. Replaced by the version accepted by JHEP. Added Section 4 with studies of resolution, statistical significance and other experimental effects