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Multidimensional phase space and sunset diagrams
journal contributionposted on 2023-05-16, 13:05 authored by Bashir, A, Robert DelbourgoRobert Delbourgo, Roberts, ML
We derive expressions for the phase space of a particle of momentum p decaying into N particles, that are valid for any number of dimensions. These are the imaginary parts of so-called "sunset" diagrams, which we also obtain. The results are given as a series of hypergeometric functions, which terminate for odd dimensions and are also well suited for deriving the threshold behavior. Â© 2001 American Institute of Physics.
Publication titleJournal of Mathematical Physics
Department/SchoolSchool of Natural Sciences
PublisherAmerican Institute of Physics
Place of publicationNew York