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Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

Six-meson amplitude in QCD-like theories

Author

  • Johan Bijnens
  • Tomáš Husek
  • Mattias Sjö

Summary, in English

We calculate the relativistic six-meson scattering amplitude at low energy within the framework of QCD-like theories with n degenerate quark flavors at next-to-leading order in the chiral counting. We discuss the cases of complex, real and pseudoreal representations, i.e. with global symmetry and breaking patterns SU(n)×SU(n)/SU(n) (extending the QCD case), SU(2n)/SO(2n), and SU(2n)/Sp(2n). In case of the one-particle-irreducible part, we obtain analytical expressions in terms of ten six-meson subamplitudes based on the flavor and group structures. We extend on our previous results obtained within the framework of the O(N+1)/O(N) nonlinear sigma model, with N being the number of meson flavors. This work allows for studying a number of properties of six-particle amplitudes at one-loop level.

Department/s

  • Theoretical Particle Physics

Publishing year

2022-09-01

Language

English

Publication/Series

Physical Review D

Volume

106

Issue

5

Document type

Journal article

Publisher

American Physical Society

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 2470-0010