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15 papers
Theory Summary of the Electroweak Session for Moriond 2005
R. D. Peccei
I broadly summarize the theoretical contributions in the Electroweak session of the 2005 Moriond meeting under four rubrics: i) neutrinos; ii) cosmology; iii) electroweak interacti…
Thoughts on CP Violation
R. D. Peccei
The necessary complex structures needed for CP violation are not easy to generate and, indeed, CP can be a symmetry in higher dimensional theories. In 4-dimensions CP violation arg…
Scales and Phases in Particle Physics and Cosmology
R. D. Peccei
I describe and analyze the various energy scales that emerge from studying the structure of the Standard Models of particle physics and cosmology. Remarkably, save for the scale of…
Light Scalars in Cosmology
R. D. Peccei
I discuss here some of the constraints imposed by quantum and gravitational corrections on two hypothetical excitations, axions and quintessence, which have important cosmological…
Exact and Broken Symmetries in Particle Physics
R. D. Peccei
In these lectures, I discuss the role of symmetries in particle physics. I begin by discussing global symmetries and show that they can be realized differently in nature, depending…
Particle Physics I: The SM and the MSSM
R. D. Peccei
After discussing alternative scenarios for the origins of the electroweak symmetry breaking, I briefly review the experimental status of the Standard Model. I explore further both…