Pion photoproduction at threshold on /sup 6/Li and low-energy theorems
(1975) Physical Review C (Nuclear Physics) — Vol. 12, n° 2, p. 514-522 (1975)
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- Abstract
- Low's theorem is deduced from the Born diagrams for pi /sup + / production by imposing electromagnetic current conservation (ECC), but the anomalous electric quadrupole moment contribution could be very important even at threshold. The derivation of the Kroll-Ruderman and Fubini-Furlan-Rossetti theorems is made consistent with ECC and Low's theorem in contrast to previous works where these are violated. A discussion of information obtainable from experiment shows that soft pion results cannot be used directly but an extrapolation from q/sup 2/=0 to m pi /sup 2/ is given which is compatible with ECC and Low's theorem.
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Moreno, M., Pestieau, J., & Urias, J. (1975). Pion photoproduction at threshold on /sup 6/Li and low-energy theorems. Physical Review C (Nuclear Physics), 12(2), 514-522. https://hdl.handle.net/2078.5/42003 (Original work published 1975)