S-matrix bootstrap for resonances

Abstract We study the 2 → 2 S-matrix element of a generic, gapped and Lorentz invariant QFT in d = 1 + 1 space time dimensions. We derive an analytical bound on the coupling of the asymptotic states to unstable particles (a.k.a. resonances) and its physical implications. This is achieved by exploiti...

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Bibliographic Details
Main Authors: N. Doroud, J. Elias Miró
Format: Article
Language:English
Published: SpringerOpen 2018-09-01
Series:Journal of High Energy Physics
Subjects:
Online Access:http://link.springer.com/article/10.1007/JHEP09(2018)052