Pole structure of the in a recent QCD simulation
Abstract
The Λ(1405) baryon is difficult to detect in experiment, absent in many quark model calculations, and supposedly manifested through a two-pole structure. Its uncommon properties made it subject to numerous experimental and theoretical studies in recent years. Lattice-QCD eigenvalues for different quark masses were recently reported by the Adelaide group. We compare these eigenvalues to predictions of a model based on Unitary Chiral Perturbation Theory. The UχPT calculation predicts the quark mass dependence remarkably well. It also explains the overlap pattern with different meson-baryon components, mainly πΣ and K¯N, at different quark masses. As a result, more accurate lattice QCD data are required to draw definite conclusions on the nature of the Λ(1405).
- Authors:
-
- The George Washington Univ., Washington, D.C. (United States)
- The George Washington Univ., Washington, D.C. (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1328673
- Report Number(s):
- JLAB-THY-16-2318; DOE/OR/23177-3906; arXiv:1512.05831
Journal ID: ISSN 2470-0010; PRVDAQ; TRN: US1700162
- Grant/Contract Number:
- 1415459; 1452055; AC05-06OR23177
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Volume: 94; Journal Issue: 5; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Molina, R., and Doring, M. Pole structure of the Λ(1405) in a recent QCD simulation. United States: N. p., 2016.
Web. doi:10.1103/PhysRevD.94.056010.
Molina, R., & Doring, M. Pole structure of the Λ(1405) in a recent QCD simulation. United States. https://doi.org/10.1103/PhysRevD.94.056010
Molina, R., and Doring, M. Tue .
"Pole structure of the Λ(1405) in a recent QCD simulation". United States. https://doi.org/10.1103/PhysRevD.94.056010. https://www.osti.gov/servlets/purl/1328673.
@article{osti_1328673,
title = {Pole structure of the Λ(1405) in a recent QCD simulation},
author = {Molina, R. and Doring, M.},
abstractNote = {The Λ(1405) baryon is difficult to detect in experiment, absent in many quark model calculations, and supposedly manifested through a two-pole structure. Its uncommon properties made it subject to numerous experimental and theoretical studies in recent years. Lattice-QCD eigenvalues for different quark masses were recently reported by the Adelaide group. We compare these eigenvalues to predictions of a model based on Unitary Chiral Perturbation Theory. The UχPT calculation predicts the quark mass dependence remarkably well. It also explains the overlap pattern with different meson-baryon components, mainly πΣ and K¯N, at different quark masses. As a result, more accurate lattice QCD data are required to draw definite conclusions on the nature of the Λ(1405).},
doi = {10.1103/PhysRevD.94.056010},
journal = {Physical Review D},
number = 5,
volume = 94,
place = {United States},
year = {Tue Sep 27 00:00:00 EDT 2016},
month = {Tue Sep 27 00:00:00 EDT 2016}
}
Web of Science
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