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Title: Hyperon-Nucleon Interactions and the Composition of Dense Matter from Quantum Chromodynamics

Abstract

The low-energy n{Sigma}{sup -} interactions determine, in part, the role of the strange quark in dense matter, such as that found in astrophysical environments. The scattering phase-shifts for this system are determined from a numerical evaluation of the QCD path integral using the technique of Lattice QCD. Our results, performed at a pion mass of m{sub {pi}} ~ 389 MeV in two large lattice volumes, and at one lattice spacing, are extrapolated to the physical pion mass using effective field theory. The calculated interactions indicate that the strange quark plays an important role in dense matter.

Authors:
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1057571
Report Number(s):
JLAB-THY-12-1509; DOE/OR/23177-2040; arXiv:1204.3606
DOE SC Grants AC02- 05CH11231; AC02-06CH11357
DOE Contract Number:  
AC05-06OR23177; FG02-04ER41302; SC0001784; FC02-06ER41443; AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Phys.Rev.Lett.
Additional Journal Information:
Journal Volume: 109; Journal Issue: 17
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Konstantinos Orginos, Silas Beane, Emmanuel Chang, Saul Cohen, Huey-Wen Lin, Tom Luu, Assumpta Parreno, Martin Savage, Andre Walker-Loud, William Detmold. Hyperon-Nucleon Interactions and the Composition of Dense Matter from Quantum Chromodynamics. United States: N. p., 2012. Web. doi:10.1103/PhysRevLett.109.172001.
Konstantinos Orginos, Silas Beane, Emmanuel Chang, Saul Cohen, Huey-Wen Lin, Tom Luu, Assumpta Parreno, Martin Savage, Andre Walker-Loud, William Detmold. Hyperon-Nucleon Interactions and the Composition of Dense Matter from Quantum Chromodynamics. United States. https://doi.org/10.1103/PhysRevLett.109.172001
Konstantinos Orginos, Silas Beane, Emmanuel Chang, Saul Cohen, Huey-Wen Lin, Tom Luu, Assumpta Parreno, Martin Savage, Andre Walker-Loud, William Detmold. Mon . "Hyperon-Nucleon Interactions and the Composition of Dense Matter from Quantum Chromodynamics". United States. https://doi.org/10.1103/PhysRevLett.109.172001.
@article{osti_1057571,
title = {Hyperon-Nucleon Interactions and the Composition of Dense Matter from Quantum Chromodynamics},
author = {Konstantinos Orginos, Silas Beane, Emmanuel Chang, Saul Cohen, Huey-Wen Lin, Tom Luu, Assumpta Parreno, Martin Savage, Andre Walker-Loud, William Detmold},
abstractNote = {The low-energy n{Sigma}{sup -} interactions determine, in part, the role of the strange quark in dense matter, such as that found in astrophysical environments. The scattering phase-shifts for this system are determined from a numerical evaluation of the QCD path integral using the technique of Lattice QCD. Our results, performed at a pion mass of m{sub {pi}} ~ 389 MeV in two large lattice volumes, and at one lattice spacing, are extrapolated to the physical pion mass using effective field theory. The calculated interactions indicate that the strange quark plays an important role in dense matter.},
doi = {10.1103/PhysRevLett.109.172001},
url = {https://www.osti.gov/biblio/1057571}, journal = {Phys.Rev.Lett.},
number = 17,
volume = 109,
place = {United States},
year = {2012},
month = {10}
}