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Chapter 15 PowerPoint
Chapter 15 PowerPoint

Beyond the Standard Model at the LHC and Beyond
Beyond the Standard Model at the LHC and Beyond

... - 5 physical Higgs bosons: - 3 neutral, 2 charged • Lightest neutral supersymmetric Higgs looks like the single Higgs in the Standard Model ...
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The Atom

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Monday, September 10 - Long Island University

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Monday, October 15 Agenda

Naturalness, Hierarchy and Physics Beyond the Standard Model
Naturalness, Hierarchy and Physics Beyond the Standard Model

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The Family Problem: Extension of Standard Model with a

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GAUGE FIELD THEORY Examples

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Matthew Jones - Phys 378 Web page:

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Concepts in Theoretical Physics

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unification of couplings

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Higgs - mechanism

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Future Directions in Particle Physics

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Monday, Apr. 18, 2005

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Particle Zoo - University of Birmingham

... In 1925, it was suggested that it relates to self-rotation, but heavily criticised… only useful as a picture. In 1927 Pauli formulated theory of spin as a fully quantum object (non-relativistic). In 1928 Dirac described the relativistic electron as a spin object. In 1940 Pauli proved the spin-statis ...
gg higgs - University of Southampton
gg higgs - University of Southampton

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Atomic Theory

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Why there is Something rather than Nothing (from

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Tutorial 1 - NUS Physics Department

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Notes - Particle Theory

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Física Teórica de Partículas

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Section III: A World of Particles
Section III: A World of Particles

... •1. What do you think a scientific model is? •2. The spheres in this model represent atoms. What do you think atoms are? •3. How could you draw a model of the element copper to show that it is different from the element gold? ...
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Grand Unified Theory

A Grand Unified Theory (GUT) is a model in particle physics in which at high energy, the three gauge interactions of the Standard Model which define the electromagnetic, weak, and strong interactions or forces, are merged into one single force. This unified interaction is characterized by one larger gauge symmetry and thus several force carriers, but one unified coupling constant. If Grand Unification is realized in nature, there is the possibility of a grand unification epoch in the early universe in which the fundamental forces are not yet distinct.Models that do not unify all interactions using one simple Lie group as the gauge symmetry, but do so using semisimple groups, can exhibit similar properties and are sometimes referred to as Grand Unified Theories as well.Unifying gravity with the other three interactions would provide a theory of everything (TOE), rather than a GUT. Nevertheless, GUTs are often seen as an intermediate step towards a TOE.The novel particles predicted by GUT models are expected to have energies around the GUT scale—just a few orders of magnitude below the Planck scale—and so will be well beyond the reach of any foreseen particle collider experiments. Therefore, the particles predicted by GUT models will be unable to be observed directly and instead the effects of grand unification might be detected through indirect observations such as proton decay, electric dipole moments of elementary particles, or the properties of neutrinos. Some grand unified theories predict the existence of magnetic monopoles.As of 2012, all GUT models which aim to be completely realistic are quite complicated, even compared to the Standard Model, because they need to introduce additional fields and interactions, or even additional dimensions of space. The main reason for this complexity lies in the difficulty of reproducing the observed fermion masses and mixing angles. Due to this difficulty, and due to the lack of any observed effect of grand unification so far, there is no generally accepted GUT model.
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