Chapter 2. A New Stage of Elementary Particle Theory

CHAPTER 2 Institutional Theory

Although most political sociologists and political scientists nowadays either consider themselves or are deemed “institutionalists,” key differences remain among major schools of institutionalism (see reviews in Pierson and Skocpol 2002; Amenta 2005). In this chapter, we review sociological institutionalism, historical institutionalism, and political institutionalism. We discuss their similarit...

A vanishing cosmological constant in elementary particle theory

The quest of a vanishing cosmological constant is considered in the simplest anomaly-free chiral gauge extension of the electroweak standard model where the new physics is limited to a well defined additional flavordynamics above the Fermi scale, namely up to a few TeVs by matching the gauge coupling constants at the electroweak scale, and with an extended scalarland. In contrast to the electro...

The Tau Lepton and the Search for New Elementary Particle

This Fifth International WEIN Symposium is devoted to physics beyond the standard model. This talk is about tau lepton physics, but I begin with the question: do we know how to nd new physics in the world of elementary par-ticles? This question is interwoven with the various tau physics topics. These topics are: searching for unexpected tau decay modes; searching for additional tau decay mechan...

Elementary Particle Physic

Ph 406 : Elementary Particle Physics Problem Set 2

1. Using the information given in the diagram of the baryon octet and de-cuplet, with masses in MeV, predict the (constituent) masses of the u, d and s quarks, and the mass of the Ω − baryon. The latter prediction was the only one from the quark model that was verified between its development and its Nobel Prize. 2. The reactions π ± p → μ + μ − are thought to proceed via single-photon exchange...