Spectral representation of the pentagon diagram amplitude

J. S. Frederiksen

Research output: Contribution to journalArticleOther

1 Citation (Scopus)


A method developed in two previous papers is used to derive a double spectral representation with Mandelstam boundary for the pentagon diagram amplitude for the production process A B → C D N. Restrictions on the masses and kinematic invariants for which this representation is valid are found and it is discussed how a representation can be obtained for wider ranges of these variables. Finally, a comparison is made with the results of other authors.

Original languageEnglish
Pages (from-to)1443-1450
Number of pages8
JournalJournal of Mathematical Physics
Issue number9
Publication statusPublished - 1973
Externally publishedYes

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