Coherent \pi^0 threshold production from the deuteron at Q^2 = 0.1   GeV^2/c^2
  First data on coherent threshold \pi^0 electroproduction from the deuteron taken by the A1 Collaboration at the Mainz Microtron MAMI are presented. At a four-momentum transfer of q^2=-0.1 GeV^2/c^2 the full solid angle was covered up to a center-of-mass energy of 4 MeV above threshold. By means of a Rosenbluth separation the longitudinal threshold s wave multipole and an upper limit for the transverse threshold s wave multipole could be extracted and compared to predictions of Heavy Baryon Chiral Perturbation Theory. 
Ingo Ewald, Peter Bartsch, Dagmar Baumann, J\"org Bermuth, Aron M.   Bernstein, Klemen Bohinc, Ralph B\"ohm, Norbert Clawite...