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PHY492: Nuclear & Particle Physics Lecture 22 Way Beyond the Standard Model
PHY492: Nuclear & Particle Physics Lecture 22 Way Beyond the Standard Model

The Higgs Boson and Electroweak Symmetry Breaking
The Higgs Boson and Electroweak Symmetry Breaking

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... These masses and charges are exactly the same for a given particle type. •spin angular momentum J: For a point particle with momentum p travelling in a circular path of radius r, the magnitude of the angular momentum is rp, as measured around an axis through the centre of the circular path and perpe ...
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some aspects of strange matter : stars and strangelets
some aspects of strange matter : stars and strangelets

shp_09 - Nevis Laboratories
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... At laboratory energies near MW 100 GeV, the measured values of 1/a are rather different: 137, 29, 10. However, their energy dependences suggest that they approach (sort of!) a common value near 1016 GeV. This is an insanely high energy! The Standard Model provides no explanation for what may happen ...
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... ELEMENTARY HIGGS BOSON PREDICTED BY THE SM IS DISCOVERED! „APPARENTLY JUST” IS VERY IMPORTANT! ...
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Particle Physics and the LHC

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What is the Higgs? - University of Manchester
What is the Higgs? - University of Manchester

... E.g. At Fermilab the collision of a single proton and antiproton is sufficiently energetic to produce over 2000 protons. At CERN, the electron and positron collided with sufficient energy to produce over 200 protons (electrons are more than 1000 times lighter than a proton!) ...
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PPT - The Center for High Energy Physics

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... Lectures 3 and 4. Cabibbo mixing angle. Necessity of introducing the idea of generations. Lectures 5 and 6. Kobayashi – Maskawa mixing matrix for three generations. Possibility of complex elements. CP-parity violation. Lectures 6 and 7. Neutral weak currents. Their type and interaction character. Le ...
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Beyond Einstein: SuSy, String Theory, Cosmology

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Chapter 17 - Ferment Magazine

... atmosphere. Normally  mesons , which are hadrons, decay into  mesons, which are leptons. In the process of decaying from a hadron to a lepton, a number of gratuitous particles have to be thrown out so that physics can maintain its symmetry principles: the spontaneous creation of a neutrino and an ...
When Symmetry Breaks Down - School of Natural Sciences
When Symmetry Breaks Down - School of Natural Sciences

... needed to make the Higgs particle mass small enough for the model to work. Numerous proposed alternatives solve this particular problem, although they introduce puzzles of their own. One idea, motivated by a phenomenon that occurs in superconductors, is that the Higgs particle arises as a bound stat ...
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The Nilpotent generalization of Dirac`s famous Equation D(N)

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Resolving New Physics with Theoretical Study of QCD and Hadron

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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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