2023/08/09 by Misra, Aalok, Yadav, Gopal
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th)
paper · doi:10.48550/arxiv.2308.05033
A longstanding problem with the popular Sakai-Sugimoto holographic dual of thermal QCD is that the "mesinos", the (non-supersymmetric) fermionic partners of the mesons, are nearly isospectral with mesons and have an unsuppressed mesino-meson interaction, both being in contradiction with actual QCD. We solve this problem in a UV-complete (and \it different) type IIA string dual \it at intermediate coupling of realistic thermal QCD, in which the mesinos are shown to be much heavier than and non-interacting with mesons (the wave-function/mass/interaction terms receiving no \cal M-theory \cal O(R4) corrections). In particular we derive a large-N enhancement of the KK mass scale MKK (from MKK to MKK\rm eff∼ N^1 + \frac1\cal O(1)MKK) arising from the construction of the type IIA mirror \citeMQGP of the type IIB dual \citemetrics of thermal QCD-like theories, as well as the generation of a one-parameter family of MKK-independent mass scale at \cal O(R4) in the \cal M-theory uplift \citeOR4 wherein the parameter can be made appropriately large. We also show that the mesino-mesino-single-(ρ/π)meson interactions, vanish identically in the aforementioned type IIA holographic dual.