Perturbative QCD and the exclusive decay of heavy quarkonium into a photon and two mesons |
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Authors: | HF Jones J Wyndham |
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Institution: | Physics Department, Imperial College, London SW7 2BZ, UK |
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Abstract: | We consider the radiative decays of the 3S1 ground state Q into a real photon and two light pseudoscalar or vector mesons. For sufficiently large mass of the heavy quark Q, the decay, e.g. ? → γππ, can be calculated in perturbative QCD, provided that the photon does not carry away a predominant fraction of the available energy. We present differential and integrated Dalitz plot distributions and, for quarkonium states produced with transverse polarization in e+e? annihilation, angular distributions of the orientation of the decay triangle relative to the beam direction. |
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