Abstract
The branching ratios of some rare processes, i.e. meson →μe, meson →meson μe, baryon → baryon μe, are calculated in a composite quark and lepton model. Use is made of an effective Hamiltonian which originates from hypercolor singlet 0− and 1− bound state exchange mechanism, acting at a mass scaleM P andM V respectively. Under the reasonable assumptionM P =M V onlyK L →μe puts a significant limit on the composite scale.
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Zhu, Z.Y. Some rare processes in a model of composite quarks and leptons. Z. Phys. C - Particles and Fields 13, 321–324 (1982). https://doi.org/10.1007/BF01572351
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DOI: https://doi.org/10.1007/BF01572351