Precise determination of the eta_c mass and width in the radiative J/Psi -> eta_c gamma decay
classification
✦ hep-ph
hep-ex
keywords
decaygammamasswidthcleodeterminationeffectiveextraction
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We present an effective field theory based extraction of the eta_c mass and width from a recent measurement by CLEO of the photon line shape in J/Psi -> eta_c gamma decay.
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