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Title: Baryon masses at nonzero isospin/kaon density

Abstract

We propose a lattice QCD calculation of the ground-state energy shifts of various baryons in a medium of pions or kaons at a single value of the quark mass corresponding to a pion mass of m π ~390 MeV and a kaon mass of m K ~540 MeV, and in a spatial volume V ~ (4 fm) 3. All systems are made using a canonical formalism in which quark propagators are contracted into correlation functions of fixed isospin/kaon density. We examine four different systems, Σ ++) n, Ξ 0+) n, p(K +) n, and n(K +) n, for up to n = 11 mesons. From the ground-state energy shifts we extract two- and three-body scattering parameters, as well as linear combinations of low-energy constants appearing in tree-level chiral perturbation theory.

Authors:
 [1];  [2]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Univ. of Maryland, College Park, MD (United States)
Publication Date:
Research Org.:
Univ. of Maryland, College Park, MD (United States); College of William and Mary, Williamsburg, VA (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1505730
Grant/Contract Number:  
FG02-93ER40762
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 88; Journal Issue: 7; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Detmold, William, and Nicholson, Amy N. Baryon masses at nonzero isospin/kaon density. United States: N. p., 2013. Web. doi:10.1103/physrevd.88.074501.
Detmold, William, & Nicholson, Amy N. Baryon masses at nonzero isospin/kaon density. United States. doi:10.1103/physrevd.88.074501.
Detmold, William, and Nicholson, Amy N. Mon . "Baryon masses at nonzero isospin/kaon density". United States. doi:10.1103/physrevd.88.074501. https://www.osti.gov/servlets/purl/1505730.
@article{osti_1505730,
title = {Baryon masses at nonzero isospin/kaon density},
author = {Detmold, William and Nicholson, Amy N.},
abstractNote = {We propose a lattice QCD calculation of the ground-state energy shifts of various baryons in a medium of pions or kaons at a single value of the quark mass corresponding to a pion mass of mπ ~390 MeV and a kaon mass of mK ~540 MeV, and in a spatial volume V ~ (4 fm)3. All systems are made using a canonical formalism in which quark propagators are contracted into correlation functions of fixed isospin/kaon density. We examine four different systems, Σ+(π+)n, Ξ0(π+)n, p(K+)n, and n(K+)n, for up to n = 11 mesons. From the ground-state energy shifts we extract two- and three-body scattering parameters, as well as linear combinations of low-energy constants appearing in tree-level chiral perturbation theory.},
doi = {10.1103/physrevd.88.074501},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 7,
volume = 88,
place = {United States},
year = {2013},
month = {10}
}

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