The magnetic moment of the ρ -meson
- Djukanovic, D.Helmholtz Institute Mainz, University of Mainz, D-55099 Mainz, Germany
- Epelbaum, E.(Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780 Bochum, Germany)
- Gegelia, J.(Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780 Bochum, Germany)
- Meißner, U.-G.(Helmholtz Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany)
Publication date
April 2014
DOIAbstract
The magnetic moment of the ρ -meson is calculated in the framework of a low-energy effective field theory of the strong interactions. We find that the complex-valued strong interaction corrections to the gyromagnetic ratio are small leading to a value close to the real tree level result, <math altimg="si1.gif" xmlns="http://www.w3.org/1998/Math/MathML"><msub><mrow><mi>g</mi></mrow><mrow><mi>ρ</mi></mrow></msub><mo>=</mo><mn>2</mn></math> . This is in a reasonably good agreement with the available lattice QCD calculations for this quantity
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