We point out that directly measuring the invariant mass of final hadrons in B-meson semileptonic decays offers an alternative way to select b→u transitions that is in principle more efficient than selecting the upper end of the lepton energy spectrum. In practice there are difficulties in determining precisely which hadrons are associated with a particular B decay, but with the advent of microvertex detectors and b-factories this approach may soon become feasible. It may also be possible to measure the hadronic invariant mass approximately via the lepton and neutrino momenta.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics