DETERMINATIONS OF P, AND CP, FOR HEAVY MESONS AND TESTS FOR THEIR VIOLATIONS WITHOUT POLARIZATION EXPERIMENTS
- 1 February 1985
- journal article
- Published by EDP Sciences in Le Journal de Physique Colloques
- Vol. 46 (C2) , C2-261
- https://doi.org/10.1051/jphyscol:1985229
Abstract
Powerful results are tabulated which can be used at modern colliders to make fundamental symmetry tests by analysis of sequential decays of X → V1V2. By generalization of the ϕϕ parity test which has recently been used to determine the parity of the ηc, the P (or CP) quantum number can always be determined for X of any spin J which decays P (or respectively CP) invariantly into VV or V[MATH] where each vector meson decays into two spin-0 bosons, or is ω. P can also always be determined from a mode like K*+ [MATH]*o. A neutral spin-0 technipion and an elementary Higgs particle, for instance, can be distinguished by such CP invariant decay modes and by ϕ03C1;o, ϕJ, JT, or if sufficiently massive by ϕZo or JZo where J/ψ and Zo go into a lepton-antilepton pair. Generalization to the gZo and gg decay channels, g = gluon jet, which would be relevant to new resonance physics, for example, at the CERN collider is discussed. There are also very simple tests of possible violations of P, of the combination of C plus isospin, of both P and CP, and of both C and CPKeywords
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