Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/100240
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Finite-volume and partial quenching effects in the magnetic polarizability of the neutron |
Author: | Hall, J. Leinweber, D. Young, R. |
Citation: | Physical Review D, 2014; 89(5):054511-1-054511-10 |
Publisher: | American Physical Society |
Issue Date: | 2014 |
ISSN: | 2470-0010 2470-0029 |
Statement of Responsibility: | J. M. M. Hall, D. B. Leinweber, and R. D. Young |
Abstract: | There has been much progress in the experimental measurement of the electric and magnetic polarizabilities of the nucleon. Similarly, lattice QCD simulations have recently produced dynamical QCD results for the magnetic polarizability of the neutron approaching the chiral regime. In order to compare the lattice simulations with experiment, calculation of partial quenching and finite-volume effects is required prior to an extrapolation in quark mass to the physical point. These dependencies are described using chiral effective field theory. Corrections to the partial quenching effects associated with the sea- quark-loop electric charges are estimated by modeling corrections to the pion cloud. These are compared to the uncorrected lattice results. In addition, the behavior of the finite-volume corrections as a function of pion mass is explored. Box sizes of approximately 7 fm are required to achieve a result within 5% of the infinite-volume result at the physical pion mass. A variety of extrapolations are shown at different box sizes, providing a benchmark to guide future lattice QCD calculations of the magnetic polarizabilities. A relatively precise value for the physical magnetic polarizability of the neutron is presented, βn= 1.93 (11)stat (11)sys × 10⁻⁴ fm³ , which is in agreement with current experimental results |
Rights: | © 2014 American Physical Society |
DOI: | 10.1103/PhysRevD.89.054511 |
Grant ID: | http://purl.org/au-research/grants/arc/DP120104627 http://purl.org/au-research/grants/arc/DP110101265 http://purl.org/au-research/grants/arc/FT120100821 |
Published version: | http://dx.doi.org/10.1103/physrevd.89.054511 |
Appears in Collections: | Aurora harvest 7 Physics publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.