Lattice calculation of the magnetic moments of {delta} and {omega}{sup -} baryons with dynamical clover fermions
- Department of Physics, College of William and Mary, Williamsburg, Virginia 23187 (United States)
- Institut fuer Kernphysik, Johannes Gutenberg-Universitaet, D-55099 Mainz (Germany)
We calculate the magnetic dipole moment of the {delta}(1232) and {omega}{sup -} baryons with 2+1 flavors of clover fermions on anisotropic lattices using a background magnetic field. This is the first dynamical calculation of these magnetic moments using a background field technique. The calculation for {omega}{sup -} is done at the physical strange quark mass, with the result in units of the physical nuclear magneton {mu}{sub {omega}{sup -}}=-1.93{+-}0.08{+-}0.12 (where the first error is statistical and the second is systematic) compared to the experimental number: -2.02{+-}0.05. The {delta} has been studied at three unphysical quark masses, corresponding to pion mass m{sub {pi}}=366, 438, and 548 MeV. The pion mass dependence is compared with the behavior obtained from chiral effective field theory.
- OSTI ID:
- 21260051
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 79, Issue 5; Other Information: DOI: 10.1103/PhysRevD.79.051502; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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