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21 papers · 2 filters
Diquark Correlations from Nucleon Charge Radii
Carl E. Carlson, Christopher D. Carone, Herry J. Kwee +1
We argue that precise measurements of charge and magnetic radii can meaningfully constrain diquark models of the nucleon. We construct properly symmetrized, nonrelativistic three-q…
New experimental constraints on polarizability corrections to hydrogen hyperfine structure
Vahagn Nazaryan, Carl E. Carlson, Keith A. Griffioen
We present a state-of-the-art evaluation of the polarizability corrections--the inelastic nucleon corrections--to the hydrogen ground-state hyperfine splitting using analytic fits…
The nucleon and Delta-resonance masses in relativistic chiral effective-field theory
Vladimir Pascalutsa, Marc Vanderhaeghen
We study the chiral behavior of the nucleon and -isobar masses within a manifestly covariant chiral effective-field theory, consistent with the analyticity principle. We compute…
Two-photon-exchange effects in the electro-excitation of the resonance
Vladimir Pascalutsa, Carl E. Carlson, Marc Vanderhaeghen
We evaluate the two-photon exchange contribution to the process at large momentum transfer with the aim of a precision study of the ratios of electric…
Dynamically Warped Theory Space and Collective Supersymmetry Breaking
Christopher D. Carone, Joshua Erlich, Brian Glover
We study deconstructed gauge theories in which a warp factor emerges dynamically and naturally. We present nonsupersymmetric models in which the potential for the link fields has t…
3-3-1 Models with Unique Lepton Generations
David L. Anderson, Marc Sher
We study previously unconsidered 3-3-1 models which are characterized by each lepton generation having a different representation under the gauge group. Flavor-changing neutral cur…