Study of theDecay
- 1 December 1962
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 128 (5), 2398-2402
- https://doi.org/10.1103/physrev.128.2398
Abstract
Some properties of the various decay modes of mesons have been studied with hodoscope scintillation counters. events were identified in the high-energy end of the muon energy spectrum from 115±3 MeV to 134 MeV which yielded (0.42±0.10)% as the relative branching ratio. The result, together with the branching ratio and the low-energy end of the muon energy spectrum, is found to satisfy a constant form factor interaction. The muon longitudinal polarization for the events was found to be + which is two standard deviations from the calculated value -0.81 using the constant form factors which best fit the spectrum. A lifetime analysis of the decay modes gave sec, sec, and sec which are consistent with a single total lifetime, as expected. The total lifetime was found to be sec in agreement with previous values. The relative branching ratio was measured as 2.98±0.25. A search for the occurrence of an intermediate-mass lepton in the decay established 3× as the upper limit for the branching ratio with MeV.
Keywords
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