Baryon masses at nonzero isospin/kaon density
Name
Detmold-2013-Baryon masses at.pdf
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1.12 MB
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Adobe PDF
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Author(s)
Detmold, William
Nicholson, Amy N.
Date Issued
October 2013
Journal
Physical Review D
Publisher
American Physical Society
Citation
Detmold, William, and Amy N. Nicholson. “Baryon masses at nonzero isospin/kaon density.” Physical Review D 88, no. 7 (October 2013). © 2013 American Physical Society
Version
Final published version
Abstract
We present 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[subscript π] ~ 390 MeV and a kaon mass of m[subscript K] ~ 540 MeV, and in a spatial volume V ~ (4 fm)[superscript 3]. All systems are created using a canonical formalism in which quark propagators are contracted into correlation functions of fixed isospin/kaon density. We study four different systems, Σ[superscript +](π[superscript +])n, Ξ[superscript 0](π[superscript +])[superscript n], p(K[superscript +])[superscript n], and n(K[superscript +])[superscript 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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.88.074501
