Helicity conservation and the A1ρπ coupling

For a review of the present status see:H. J. W. Müller:Helicity Conservation and Related Problems, Topics in Particles and Fields, edited byH. H. Aly, Dekker Pub. Co., to be published (1971).

F. J. Gilman, J. Pumplin, A. Schwimmer andL. Stodolsky:Phys. Lett.,31 B 387 (1970).

D. R. O. Morrison: Rapporteur’s talk toXV International Conference on High-Energy Physics, (Kiev, 1970) and CERN/D.Ph.II/70-64.

SLAC-Tufts-Berkeley Collaboration:Phys. Rev. Lett.,24, 960 (1970).

Aachen-Berlin-Bonn-CERN-Cracow-Heidelberg-London-Vienna Collaboration:Phys. Lett.,34 B, 160 (1971).

D. R. O. Morrison:Phys. Rev.,165, 1699 (1968).

M. Barmawi: International Centre for Theoretical Physics, Trieste, preprints IC/70/113, 114 (1970).

F. J. Gilman andH. Harari:Phys. Rev.,165, 1803 (1968).

E.g.,P. H. Frampton:Nuovo Cimento,48 A, 2175 (1967).

K. Itabashi andY. Kohsaka: Tohoku University preprint (1970).

This reaction has also been discussed byM. A. Ahmed andM. O. Taha:Progr. Theor. Phys.,44, 448 (1970);C. J. Goebel, M. L. Blackmon andK. C. Wali:Phys. Rev.,182, 1487 (1969);Fayyazuddin andRiazuddin:Phys. Lett.,28 B, 561 (1969);P. Carruthers andF. Cooper: Cornell preprint (1969).