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arXiv · 2312.15013

Bootstrapping mesons at large $N$: Regge trajectory from spin-two maximization

Jan Albert·Johan Henriksson·Leonardo Rastelli·Alessandro Vichi
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Abstract

We continue the investigation of large $N$ QCD from a modern bootstrap perspective, focusing on the mesons. We make the natural spectral assumption that the $2 \to 2$ pion amplitude must contain, above the spin-one rho meson, a massive resonance of spin two. By maximizing its coupling we find a very interesting extremal solution of the dual bootstrap problem, which appears to contain at least a full Regge trajectory. Its low-lying states are in uncanny quantitative agreement with the meson masses in the real world.

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Jan Albert, Johan Henriksson, Leonardo Rastelli, Alessandro Vichi. 2023-12-22. Bootstrapping mesons at large $N$: Regge trajectory from spin-two maximization. https://arxiv.org/abs/2312.15013

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