Progress in meson-meson scattering at large $N_\text{c}$

Autor:	Baeza-Ballesteros, Jorge, Hernández, Pilar, Romero-López, Fernando
Rok vydání:	2024
Předmět:	High Energy Physics - Lattice High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
Popis:	We study the large $N_\text{c}$ scaling of meson-meson scattering amplitudes in a theory with $N_\text{f}=4$ degenerate quark flavors. We focus on two different scattering channels, one having the same quantum numbers as some recently found tetraquark states at LHCb. Using L\"uscher's formalism, we study the $N_\text{c}$ dependence of the scattering phase shift and investigate the presence of exotic resonances in the scattering amplitude. We analyze the impact of including two-vector-meson and tetraquark-like operators to extract the finite-volume energies. Comment: 8 pages of main content, 5 figures. Talk presented at the 40th International Symposium on Lattice Field Theory (Lattice2023), 31 July - 4 August 2023, Fermi National Accelerator Laboratory
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2401.05177 Zobrazit plný text záznamu View this record from Arxiv