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Type: Journal article
Title: Magnetic form factors of the octet baryons from lattice QCD and chiral extrapolation
Author: Shanahan, P.
Horsley, R.
Nakamura, Y.
Pleiter, D.
Rakow, P.
Schierholz, G.
Stueben, H.
Thomas, A.
Young, R.
Zanotti, J.
Citation: Physical Review D, 2014; 89(7):074511-1-074511-20
Publisher: American Physical Society
Issue Date: 2014
ISSN: 1550-7998
Statement of
P. E. Shanahan, R. Horsley, Y. Nakamura, D. Pleiter, P. E. L. Rakow, G. Schierholz, H. Stüben, A.W. Thomas, R. D. Young, and J. M. Zanotti
Abstract: We present a 2 + 1-flavor lattice QCD calculation of the electromagnetic Dirac and Pauli form factors of the octet baryons. The magnetic Sachs form factor is extrapolated at six fixed values of Q2 to the physical pseudoscalar masses and infinite volume using a formulation based on heavy-baryon chiral perturbation theory with finite-range regularization. We properly account for omitted disconnected quark contractions using a partially quenched effective field theory formalism. The results compare well with the experimental form factors of the nucleon and the magnetic moments of the octet baryons.
Rights: © 2014 American Physical Society
RMID: 0030009178
DOI: 10.1103/PhysRevD.89.074511
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Appears in Collections:Chemistry and Physics publications

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