# Pion scattering: from Lovelace-Shapiro to Neveu-Schwarz and beyond

- Institution: CERN
- Department: TH institutes
- Speaker: Massimo Bianchi
- Year: 2019
- Language: English
- Subjects: Mathematics
- Source: [CERN](https://videos.cern.ch/record/3015119)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

We show how to embed the Lovelace-Shapiro model for pion scattering in the Neveu-Schwarz fermionic string. In particular we relate the 4-point pion amplitude exposing Adler's zero to a peculiar 4-point tachyon amplitude. We then show how to compute higher point amplitudes involving not only pions but also rho mesons and sigma particles and discuss the low-energy limit. We conclude with some caveats about the extension of the procedure to amplitudes with more than six insertions..

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## Lectures

1. [Pion scattering: from Lovelace-Shapiro to Neveu-Schwarz and beyond](https://invisiblenetwork.ai/learn/cern/3015119/ff6a0e7b42ca), 48 min (CERN's player)