Decay Correlations of Heavy Leptons in e+ e- ---> Lepton+ Lepton-
Jul, 197148 pages
Published in:
- Phys.Rev.D 4 (1971) 2821,
- Phys.Rev.D 13 (1976) 771 (erratum)
Report number:
- SLAC-PUB-0932
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Abstract: (APS)
Assuming that leptons heavier than muons exist in nature, we consider their decay modes and the correlations between the decay products of l+ and l− in the colliding-beam experiment: e++e−→l++l−. Far above the threshold, the helicities of l+ and l− tend to be opposite to each other. Near the threshold the directions of spins of l+ and l− prefer to be parallel to each other, and the sum of the two spins prefers to be either parallel or anti-parallel to the direction of the incident electron. Because the parity conservation is violated maximally in the decays of l+ and l−, the angular distributions of decay products depend strongly on the spin orientation of the heavy leptons. Since the spins of l+ and l− are strongly correlated in the production, we found a strong correlation between the energy-angle distributions of the decay products of l+ and l−. The decay widths of l− into channels νlν¯ee−, νlν¯μμ−, νlπ−, νlK−, νlρ−, νlK*, νlA1, νlQ, and νl+hadron continuum as functions of the mass of l− are estimated.References(25)
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