A graphical method for multi-soft-pion processes

✍ Scribed by Henry D.I Abarbanel; Shmuel Nussinov

• Publisher: Elsevier Science
• Year: 1967
• Tongue: English
• Weight: 474 KB
• Volume: 42
• Category: Article
• ISSN: 0003-4916
• DOI: 10.1016/0003-4916(67)90136-4

✦ Synopsis

ew Jersey '4 set of graphical rules is established for writing down all the cont,ributions to t,he hadron process cy ---f @ + TZ soft pions dictat,ed by the algebra of current commutators of Cell-Mann and PCAC. Explicit results are given for n = 3. An example of n = 4 is treated in the form of soft ?T--?T scattering, where the small s-wave scattering lengths found by Weinberg are rederived.