René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Add examples from the famous 1961 paper of Cabibbo and Gatto","articleBody":"There is a nice [paper](https://inspirehep.net/literature/25387) of Cabibbo and Gatto from 1961 about e+e- going to pions\r\nand other states. For the historical context of this work cf. e.g. this nice [article](https://arxiv.org/pdf/1812.11847.pdf).\r\n\r\nCabibbo and Gatto provide results for many interesting tree level calculations \r\n(that are still relevant for [nuclear physics](https://inspirehep.net/literature?sort=mostrecent\u0026size=25\u0026page=1\u0026q=refersto%3Arecid%3A25387)) that are done without really relying on Feynman diagrams.\r\n\r\nUsing FeynCalc one can write down the amplitudes by hand (i.e. without using FeynArts) and then \r\nshow how to calculate x-sections and decay rates. That would make a lot of nice examples.\r\n\r\nThe attachment contains a rough sketch partially reproducing one of the first results in the paper.\r\n\r\n[CabbiboGato.zip](https://github.com/FeynCalc/feyncalc/files/5566010/CabbiboGato.zip)","author":{"url":"https://github.com/vsht","@type":"Person","name":"vsht"},"datePublished":"2020-11-19T10:12:00.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/84/feyncalc/issues/84"}