This title appears in the Scientific Report :
2015
Please use the identifier:
http://hdl.handle.net/2128/8738 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevD.90.034502 in citations.
Electric form factors of the octet baryons from lattice QCD and chiral extrapolation
Electric form factors of the octet baryons from lattice QCD and chiral extrapolation
We apply a formalism inspired by heavy-baryon chiral perturbation theory with finite-range regularization to dynamical 2+1-flavor CSSM/QCDSF/UKQCD Collaboration lattice QCD simulation results for the electric form factors of the octet baryons. The electric form factor of each octet baryon is extrapo...
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Personal Name(s): | Shanahan, P. E. (Corresponding Author) |
---|---|
Horsley, R. / Nakamura, Y. / Pleiter, D. / Rakow, P. E. L. / Schierholz, G. / Stüben, H. / Thomas, A. W. / Young, R. D. / Zanotti, J. M. | |
Contributing Institute: |
Jülich Supercomputing Center; JSC |
Published in: | Physical Review D Physical review / D, 90 90 (2014 2014) 3 3, S. 034502 034502 |
Imprint: |
[S.l.]
Soc.
2014
2014-08-12 2014-08-01 |
DOI: |
10.1103/PhysRevD.90.034502 |
Document Type: |
Journal Article |
Research Program: |
Computational Science and Mathematical Methods |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevD.90.034502 in citations.
We apply a formalism inspired by heavy-baryon chiral perturbation theory with finite-range regularization to dynamical 2+1-flavor CSSM/QCDSF/UKQCD Collaboration lattice QCD simulation results for the electric form factors of the octet baryons. The electric form factor of each octet baryon is extrapolated to the physical pseudoscalar masses, after finite-volume corrections have been applied, at six fixed values of Q2 in the range 0.2–1.3 GeV2. The extrapolated lattice results accurately reproduce the experimental form factors of the nucleon at the physical point, indicating that omitted disconnected quark loop contributions are small relative to the uncertainties of the calculation. Furthermore, using the results of a recent lattice study of the magnetic form factors, we determine the ratio μpGpE/GpM. This quantity decreases with Q2 in a way qualitatively consistent with recent experimental results. |