Berlin 2005 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 12: Theorie

HK 12.8: Vortrag

Freitag, 4. März 2005, 18:30–18:45, TU MA041

Quarkmass Dependence of Baryon Magnetic Moments — •Tobias A. Gail and Thomas R. Hemmert — Technische Universität München

We discuss the chiral extrapolation of recent lattice data [1] for the nucleon magnetic moment using relativistic p⁴ ChPT.

For the three moments of the NΔ transition the established nonrelativistic [2] and a new relativistic calculation using infrared regularization adapted for spin 3/2 fields are discussed in the context of lattice data [3] and recent experimental results.

[1] M.Göckeler et al. (QCDSF Collaboration), hep-lat/0303019

[2] G.C.Gellas, T.R.Hemmert, C.N.Ktorides, G.I.Poulis, Phys.Rev.D60:054022,1999

[3] C.Alexandrou et al., Phys.Rev.D69:114506,2004