Chiral symmetry and pion polarizabilities

We use chiral perturbation theory including one-loop contribution to derive formulae needed to deduce pion polarizabilities for γπ→γπ and γγ→ππ data. We deduce for the first time values for the π ± and π 0 polarizabilities from ππ production data, and compare these new results to chiral symmetry pre...

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Bibliographic Details
Published in:Physics letters. B 1992-02, Vol.277 (1), p.158-162
Main Authors: Babusci, D., Bellucci, S., Giordano, G., Matone, G., Sandorfi, A.M., Moinester, M.A.
Format: Article
Language:English
Subjects:
Classical and quantum physics: mechanics and fields
Exact sciences and technology
Physics
Theory of quantized fields
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Summary:We use chiral perturbation theory including one-loop contribution to derive formulae needed to deduce pion polarizabilities for γπ→γπ and γγ→ππ data. We deduce for the first time values for the π ± and π 0 polarizabilities from ππ production data, and compare these new results to chiral symmetry predictions.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(92)90973-8