πΛPhase-Shift Information from High-Energy Antineutrino Reactions and fromΞe4Decays
- 25 February 1969
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 178 (5), 2365-2371
- https://doi.org/10.1103/physrev.178.2365
Abstract
Methods are described to obtain the -wave phase shift from the processes and . Each of these processes is fully specified (for vanishing lepton mass) by a set of sixteen seven-dimensional distributions describing the intensity and the various polarization spectra. From each distribution, nine functions of a single variable, the invariant mass, are extracted. Ratios of these functions determine the -wave phase shift, for energies where only - and -wave amplitudes are appreciable and where the phase shift is the only significant one. For the decays there are 36 independent determinations of this kind. For the reactions there are 8, and these are independent of a detailed knowledge of the incoming spectrum. In all instances, knowledge of the polarizations of the parent baryon and of the is indispensable. No assumptions on the structure of hadronic form factors are necessary. We do assume that possible deviations from lepton pair locality and from invariance are insignificant.
Keywords
This publication has 2 references indexed in Scilit:
- Pion Phase-Shift Information fromDecaysPhysical Review B, 1968
- Four-Body Leptonic Decays of HyperonsPhysical Review B, 1967