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

Abstract

The low-energy neutron-{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 obtained from a numerical evaluation of the QCD path integral using the technique of Lattice QCD. Our calculations, 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 interactions determined from QCD are consistent with those extracted from hyperon-nucleon experimental data within uncertainties, and strengthen theoretical arguments that the strange quark is a crucial component of dense nuclear matter.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1053775
Report Number(s):
JLAB-THY-12-1615; DOE/OR/23177-2348; arXiv:1204.3606
DOE Contract Number:  
AC05-06OR23177, FG03-97ER4014, FG02-04ER41302, 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

Beane, S R, Cohen, S D, Detmold, W, Lin, H -W, Luu, T C, Orginos, K, Parreno, A, Savage, M J, and Walker-Loud, A. Hyperon-Nucleon Interactions and the Composition of Dense Nuclear Matter from Quantum Chromodynamics. United States: N. p., 2012. Web. doi:10.1103/PhysRevLett.109.172001.
Beane, S R, Cohen, S D, Detmold, W, Lin, H -W, Luu, T C, Orginos, K, Parreno, A, Savage, M J, & Walker-Loud, A. Hyperon-Nucleon Interactions and the Composition of Dense Nuclear Matter from Quantum Chromodynamics. United States. https://doi.org/10.1103/PhysRevLett.109.172001
Beane, S R, Cohen, S D, Detmold, W, Lin, H -W, Luu, T C, Orginos, K, Parreno, A, Savage, M J, and Walker-Loud, A. Mon . "Hyperon-Nucleon Interactions and the Composition of Dense Nuclear Matter from Quantum Chromodynamics". United States. https://doi.org/10.1103/PhysRevLett.109.172001.
@article{osti_1053775,
title = {Hyperon-Nucleon Interactions and the Composition of Dense Nuclear Matter from Quantum Chromodynamics},
author = {Beane, S R and Cohen, S D and Detmold, W and Lin, H -W and Luu, T C and Orginos, K and Parreno, A and Savage, M J and Walker-Loud, A},
abstractNote = {The low-energy neutron-{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 obtained from a numerical evaluation of the QCD path integral using the technique of Lattice QCD. Our calculations, 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 interactions determined from QCD are consistent with those extracted from hyperon-nucleon experimental data within uncertainties, and strengthen theoretical arguments that the strange quark is a crucial component of dense nuclear matter.},
doi = {10.1103/PhysRevLett.109.172001},
url = {https://www.osti.gov/biblio/1053775}, journal = {Phys. Rev. Lett.},
number = 17,
volume = 109,
place = {United States},
year = {2012},
month = {10}
}