1995/08/21 by M. K. Banerjee, Joseph Milana, J. Milana
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.54.5804
published as Phys.Rev. D54 (1996) 5804-5811 · 7 pages of double column revtex, no figures
arxiv created 1995/08/21 · openalex publication_date 1996/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
This paper deals with two issues. First, we explore the quantitative importance of higher multiplets for properties of the \ensuremathΔ decuplet in chiral perturbation theory. In particular, it is found that the lowest order one-loop contributions from the Roper octet and the \ensuremathΔ(1600) to the decuplet masses and magnetic moments are substantial. The relevance of these results to the chiral expansion in general is discussed. The exact values of the magnetic moments depend upon delicate cancellations involving ill-determined coupling constants. Second, we present new relations between the magnetic moments of the \ensuremathΔ decuplet that are independent of all couplings. They are exact at the order of the chiral expansion used in this paper.