Lattice studies of chimera baryons in Sp(4) gauge theory
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866918429921902592 |
|---|---|
| author | Lee, Jong-Wan Bennett, Ed Del Debbio, Luigi Forzano, Niccolò Hill, Ryan C. Hong, Deog Ki Hsiao, Ho Lin, C. -J. David Lucini, Biagio Lupo, Alessandro Piai, Maurizio Vadacchino, Davide Zierler, Fabian |
| author_facet | Lee, Jong-Wan Bennett, Ed Del Debbio, Luigi Forzano, Niccolò Hill, Ryan C. Hong, Deog Ki Hsiao, Ho Lin, C. -J. David Lucini, Biagio Lupo, Alessandro Piai, Maurizio Vadacchino, Davide Zierler, Fabian |
| contents | We study chimera baryons, fermion bound states composed of two (hyper)quarks transforming in the fundamental and one in the antisymmetric representation of a non-Abelian gauge group. While in QCD they coincide with ordinary baryons, in composite Higgs models (CHMs) with top partial compositeness, spin-1/2 chimera baryons serve as partners of the top quark and are responsible for its large mass. We perform non-perturbative lattice calculations of the low-lying spectrum of the chimera baryons, in a specific realization of CHMs based on a Sp(4) gauge theory. In the quenched approximation, we present the numerical results in the continuum and massless limits. Then, for dynamical fermions, we measure the spectrum and matrix elements by employing a newly developed spectral density analysis for several choices of the lattice parameters. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_04433 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Lattice studies of chimera baryons in Sp(4) gauge theory Lee, Jong-Wan Bennett, Ed Del Debbio, Luigi Forzano, Niccolò Hill, Ryan C. Hong, Deog Ki Hsiao, Ho Lin, C. -J. David Lucini, Biagio Lupo, Alessandro Piai, Maurizio Vadacchino, Davide Zierler, Fabian High Energy Physics - Lattice High Energy Physics - Phenomenology Nuclear Theory We study chimera baryons, fermion bound states composed of two (hyper)quarks transforming in the fundamental and one in the antisymmetric representation of a non-Abelian gauge group. While in QCD they coincide with ordinary baryons, in composite Higgs models (CHMs) with top partial compositeness, spin-1/2 chimera baryons serve as partners of the top quark and are responsible for its large mass. We perform non-perturbative lattice calculations of the low-lying spectrum of the chimera baryons, in a specific realization of CHMs based on a Sp(4) gauge theory. In the quenched approximation, we present the numerical results in the continuum and massless limits. Then, for dynamical fermions, we measure the spectrum and matrix elements by employing a newly developed spectral density analysis for several choices of the lattice parameters. |
| title | Lattice studies of chimera baryons in Sp(4) gauge theory |
| topic | High Energy Physics - Lattice High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2604.04433 |