Darwin-Foldy term and proton charge radius

In this contribution we study the Dirac equation for a finite size proton in an external electric field with explicit introduction of Dirac-Pauli form factors. Our aim is twofold. On the one hand, we wish to study whether our conclusions regarding the exact cancellation between Dirac form factor and Foldy term contributions occurring for the neutron still hold for the proton. On the other hand, we wish to clearly illustrate some of the specific features of the description of a composite particle like the proton with the Dirac equation.Comment: contribution to XVIIth European Conference of Few-Body Problems in Physics, Evora, Portugal Sept 2000, to be published in Nucl. Phys.

Meson PVV Interactions are determined by Quark Loops

We show that all abnormal parity three-body meson interactions can be adequately described by quark loops, evaluated at zero external momentum, with couplings determined by $U(N_f)$ symmetry. We focus primarily on radiative meson decays which involve one pseudoscalar. The agreement with experiment for non-rare decays is surprisingly good and requires very few parameters, namely the coupling constants $g_{\pi qq}$ and $g_{\rho qq}$ and some mixing angles. This agreement extends to some three-body decays that are dominated by pion pairs in a P-wave state.Comment: 21 pages, Revtex, one figur

Momentum and Coordinate Space Three-nucleon Potentials

In this paper we give explicit formulae in momentum and coordinate space for the three-nucleon potentials due to $\rho$ and $\pi$ meson exchange, derived from off-mass-shell meson-nucleon scattering amplitudes which are constrained by the symmetries of QCD and by the experimental data. Those potentials have already been applied to nuclear matter calculations. Here we display additional terms which appear to be the most important for nuclear structure. The potentials are decomposed in a way that separates the contributions of different physical mechanisms involved in the meson-nucleon amplitudes. The same type of decomposition is presented for the $\pi - \pi$ TM force: the $\Delta$, the chiral symmetry breaking and the nucleon pair terms are isolated.Comment: LATEX, 33 pages, 3 figures (available as postscript files upon request

United States v. Keystone Sanitation Company: E-mail and the Attorney-Client Privilege

The rapid growth and sophistication of technology have changed the way people communicate. E-mail and the Internet have begun to affect the way attorneys communicate with their clients. E-mail is fast and convenient, but it is not without risks. The risk of illegal interception and the risk of inadvertent disclosure are serious issues that attorneys need to be aware of and try to prevent so that the attorney-client privilege is protected as much as possible. Although communicating with a client by e-mail may be risky, the risks posed by e-mail are no different from those posed by communicating by postal mail, telephone, or fax machine

A Compilation of Rubrics to be Used in Chemistry to Emphasize Argumentative Writing in the Science Classroom

The new Common Core Standards for New York State and the Framework for K-12 Science Education Standards have a main focus on implementing argumentative writing into each content area. Some form of argumentative writing has always been used in the science curriculum through the creation of a lab report. However, an argumentative lab report must contain a counterclaim and specific sources of evidence to be considered a real argument. An argument does not have to be as formal as a lab report. Arguments can be as informal as a journal article or a narrative story. As long as the main parts of the argument are present, which include the claim, warrant, evidence and counterclaim, any sample of writing can be turned into an argument. In science, the three most important types of writing to enhance scientific literacy are lab reports, journaling and narratives. All three of these examples can be turned into argumentative writing to enhance a students’ understanding of the content and the writing process