2024-03-29T07:35:38Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/207592016-02-16T06:23:31Zcom_10261_61com_10261_4col_10261_314
Geng, Li Sheng
Martín Cámalich, Jorge
Vicente Vacas, Manuel J.
2010-02-05T12:08:33Z
2010-02-05T12:08:33Z
2009-08-25
Physical Review - Section D - Particles and Fields 80 (3): 034027 (2009)
1550-7998
http://hdl.handle.net/10261/20759
10.1103/PhysRevD.80.034027
We present a calculation of the leading SU(3)-breaking O(p(3)) corrections to the electromagnetic moments and charge radius of the lowest-lying decuplet resonances in covariant chiral perturbation theory. In particular, the magnetic dipole moment of the members of the decuplet is predicted fixing the only low-energy constant (LEC) present up to this order with the well-measured magnetic dipole moment of the Omega(-). We predict mu(++)(Delta) = 6.04(13) and mu(+)(Delta) = 2.84(2), which agree well with the current experimental information. For the electric quadrupole moment and the charge radius, we use state-of-the-art lattice QCD results to determine the corresponding LECs, whereas for the magnetic octupole moment there is no unknown LEC up to the order considered here, and we obtain a pure prediction. We compare our results with those reported in large N-c, lattice QCD, heavy-baryon chiral perturbation theory, and other models.
eng
openAccess
Electromagnetic structure of the lowest-lying decuplet resonances in covariant chiral perturbation theory
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