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Masses of vector and pseudovector hybrid mesons in a chiral symmetric model

Walaa I. Eshraim

SciPost Phys. Proc. 6, 014 (2022) · published 31 May 2022

Proceedings event

XXXIII International Workshop on High Energy Physics

Abstract

We enlarge the chiral model, the so-called extended Linear Sigma Model (eLSM), by including the low-lying hybrid nonet with exotic quantum numbers $J^{PC}=1^{-+}$ and the nonet of their chiral partners with $J^{PC}=1^{+-}$ to a global $U(3)_r \times U(3)_l$ chiral symmetry. We use the assignment of the $\pi_1^{hyb}= \pi_1(1600)$ as input to determine the unknown parameters. Then, we compute the lightest vector and pseudovector hybrid masses that could guide ongoing and upcoming experiments in searching for hybrids.


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