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dc.contributor.authorGeng, Li Sheng-
dc.contributor.authorMartín Cámalich, Jorge-
dc.contributor.authorVicente Vacas, Manuel J.-
dc.identifier.citationPhysical Review - Section D - Particles and Fields 80 (3): 034027 (2009)en_US
dc.description.abstractWe 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.en_US
dc.description.sponsorshipThis work was partially supported by the MEC grant FIS2006-03438 and the European Community-Research Infrastructure Integrating Activity Study of Strongly Interacting Matter (Hadron-Physics2, Grant Agreement 227431)under the Seventh Framework Programme of EU. L.S.G. acknowledges support from the MICINN in the Program “Juan de la Cierva”. J.M.C. acknowledges the same institution for a FPU grant.en_US
dc.format.extent282442 bytes-
dc.publisherAmerican Physical Societyen_US
dc.titleElectromagnetic structure of the lowest-lying decuplet resonances in covariant chiral perturbation theoryen_US
dc.description.peerreviewedPeer revieweden_US
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