Two-index SU(N) theories from one flavor QCD to Steven Weinberg's ππ scattering legacy

Francesco Sannino*

*Kontaktforfatter

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Abstract

I review and improve on how two-index SU(N) gauge-fermion theories help access salient information about the large N vacuum and spectrum of QCD, super Yang Mills and meson-meson scattering. The interplay with recent lattice simulations will be employed to deduce the size of 1/N2 corrections. Through the meson-meson scattering analysis I will honor Steven Weinberg's memory by showing how two-index extrapolations naturally accommodate the appearance of tetraquarks states crucial to unitarize meson-meson scattering at low energies.

OriginalsprogEngelsk
Artikelnummer116546
TidsskriftNuclear Physics B
Vol/bind1002
Antal sider13
ISSN1873-1562
DOI
StatusUdgivet - maj 2024

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