Summary
Constraints on the derivatives ofππ s- p- andd-wave amplitudes below threshold are deduced from crossing, positivity and twice-subtracted dispersion relations.
Riassunto
Dalle relazioni di dispersione sottratte due volte, di positività e di incrocio si deducono i vincoli delle derivate delle ampiezzeππ in ondes, p ed al di sotto della soglia.
Реэюме
Выводятся ограничения на проиэводныеs,p иd парциальных амплитуд ππ рассеяния, исходя иэ кроссинг-симметрии, положительности и дисперсионных соотнощений с двойным вычитанием.
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Pennington, M.R. Rigorous constraints on the derivatives ofππ s-, p- andd-wave amplitudes. Nuov Cim A 5, 644–658 (1971). https://doi.org/10.1007/BF02734571
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DOI: https://doi.org/10.1007/BF02734571