BEHAVIOR: remove factor 16 pi from phsp factor #403
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redeboer
requested changes
Mar 4, 2024
Co-authored-by: Remco de Boer <[email protected]>
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Removed the factor$1/16\pi$ from each of the phase space factors (see e.g.
PhaseSpaceFactor). The factor comes from the PDG2023, §Resonances, Eq. (50.11) and comes from a normalization on the transition matrix. So far, the factor was irrelevant, as it is mainly used inEnergyDependentWidthwhere the factor cancels out. In the K-matrix formalism, however, it is often better to leave the normalization out, see e.g. Chung (1995), p.5.