Abstract
The charged pion spectra in p d→π −π 0p s, π −π +n s have been measured. The Doppler broadening of the pion mom entum due to the spectator neutron recoil is at least a factor of two larger than that due to the proton and in disagreement with that expected from the deuteron wave function. This effect and earlier observations on spectators are well described by assuming narrow N N bound states near threshold.
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