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13 papers · 2 filters
Recent Results from Jefferson Lab
Volker D. Burkert
Recent results on studies of the structure of nucleons and nuclei in the regime of strong interaction QCD are discussed. Use of high current polarized electron beams, polarized tar…
Origin of Relativistic Effects in the Reaction D(e,e'p)n at GeV Energies
S. Jeschonnek, J. W. Van Orden
In a series of recent publications, a new approach to the non-relativistic reduction of the electromagnetic current operator in calculations of electro-nuclear reactions has been i…
Charge conjugation invariance of the Spectator Equations
Franz Gross
In response to recent critcism, we show how to define the spectator equations for negative energies so that charge conjugation invariance is preserved. The result, which emerges na…
Improving the Convergence of NN Effective Field Theory
Daniel R. Phillips, Gautam Rupak, Martin J. Savage
We study a low-energy effective field theory (EFT) describing the NN system in which all exchanged particles are integrated out. We show that fitting the residue of the 3S1 amplitu…
Critique of a Pion Exchange Model for Interquark Forces
Nathan Isgur
I describe four serious defects of a widely discussed pion exchange model for interquark forces: it doesn't solve the "spin-orbit problem" as advertised, it fails to describe the i…
The Anapole Form Factor of the Deuteron
Martin J. Savage, Roxanne P. Springer
We find the leading order result for the anapole form factor of the deuteron using effective field theory. The momentum dependence of the anapole form factor is different from that…