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Weinberg is too terse on the subject, does anyone know of good reference on how partial wave expansion is used in QFT, especially in studying resonant structures.

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  • $\begingroup$ Have you found any recommendations by now? $\endgroup$
    – ssm
    Commented Mar 1 at 15:38

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Apart from Weinberg QFT vol1, section 3.7, one can look at the paper: "On the general theory of collisions for particles with spin", Jacob and Wick 1959. A recent review that I found useful is one of the appendices of this paper: https://arxiv.org/abs/2211.00085

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  • $\begingroup$ Isn't the OP precisely asking for a reference different from Weinberg? $\endgroup$
    – Gabriel Ybarra Marcaida
    Commented Jul 12 at 10:23
  • $\begingroup$ Oh, you're right :)). It was a mistake! $\endgroup$
    – Borna
    Commented Jul 13 at 11:44

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