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Contents - UMD Physics
Contents - UMD Physics

Exploring physics capabilities in the STAR experiment with the
Exploring physics capabilities in the STAR experiment with the

New Methods in Computational Quantum Field Theory
New Methods in Computational Quantum Field Theory

... will play a very important role in probing for physics beyond the Standard Model • Nature has been very kind to experimenters in fixing the mass of the new boson: – there are lots of decay modes to measure – there are a number of production mechanisms to explore – it will be challenging but feasible ...
Tutorial material for weak interactions and more
Tutorial material for weak interactions and more

Physics at Hadron Collider
Physics at Hadron Collider

Notes - Particle Theory
Notes - Particle Theory

... – Some processes among the particles we’ve discussed cannot be explained by either the strong force or the electromagnetic force. These forces do not account for quarks changing flavor, or for neutrinos (which carry neither charge nor color) interacting at all. – Processes that involve neutrino inte ...
PowerPoint
PowerPoint

... breaking, the resulting mass spectra for the excited mesons are contrary to the experimental data. Soft-wall AdS/QCD models describe the linear confinement and desired mass spectra for the excited vector mesons, while the chiral symmetry breaking can't consistently be realized. How to naturally inco ...
Randall-Sundrum graviton spin determination using azimuthal
Randall-Sundrum graviton spin determination using azimuthal

Latest Results from ATLAS Higgs Search
Latest Results from ATLAS Higgs Search

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Advances in Effective Field Theories
Advances in Effective Field Theories

Qu`attendre des premières données du LHC
Qu`attendre des premières données du LHC

Curriculum Vitae Contact Prof. Sebastiano Albergo Department of
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ppt - Desy

... It is interesting that the correct order is So far no solution: • A modification of gravity at 0.1mm?(large extra dim.) • Leak of vac. energy to other universes (wormholes)? ...
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The True Internal Symmetry Group of the

Slides - Indico
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... • Little Higgs theories were an outgrowth of dimensional deconstruction: in these theories, the gauge group has the form of a direct product of several copies of the same factor, for example SU(3) × SU(3). • In the Minimal Moose model these symmetries acquires a clear physical attribute: they’re a c ...
Chemistry Review Semester 1
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... parts of the counterterms for the theory with (where the symmetry is unbroken) will also serve to cancel the divergencies in the theory with where the symmetry is spontaneously broken. This is a general rule for theories with spontaneous symmetry breaking. ...
PROBset2_2014 - University of Toronto, Particle Physics and
PROBset2_2014 - University of Toronto, Particle Physics and

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Computing at the Large Hadron Collider in the CMS

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Dynamical Conformal and Electro

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The BEH Mechanism and its Scalar Boson by François Englert
The BEH Mechanism and its Scalar Boson by François Englert

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history of particle physics (PowerPoint 13.93MB)

... Particle and Nuclear Physics are the studies to answer this question ...
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... • Imagine any physical process (descibed by a unitary matrix U) whose effect is just to exchange the locations of the two particles. – Because two such swaps gives the identical quantum state, UU=1 (identity operation), – One swap U must multiply the state vector by 1. – There are only two square ro ...
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Technicolor (physics)

Technicolor theories are models of physics beyond the standard model that address electroweak gauge symmetry breaking, the mechanism through which W and Z bosons acquire masses. Early technicolor theories were modelled on quantum chromodynamics (QCD), the ""color"" theory of the strong nuclear force, which inspired their name.Instead of introducing elementary Higgs bosons to explain observed phenomena, technicolor models hide electroweak symmetry and generate masses for the W and Z bosons through the dynamics of new gauge interactions. Although asymptotically free at very high energies, these interactions must become strong and confining (and hence unobservable) at lower energies that have been experimentally probed. This dynamical approach is natural and avoids issues of Quantum triviality and the hierarchy problem of the Standard Model.In order to produce quark and lepton masses, technicolor has to be ""extended"" by additional gauge interactions. Particularly when modelled on QCD, extended technicolor is challenged by experimental constraints on flavor-changing neutral current and precision electroweak measurements. It is not known what is the extended technicolor dynamics.Much technicolor research focuses on exploring strongly interacting gauge theories other than QCD, in order to evade some of these challenges. A particularly active framework is ""walking"" technicolor, which exhibits nearly conformal behavior caused by an infrared fixed point with strength just above that necessary for spontaneous chiral symmetry breaking. Whether walking can occur and lead to agreement with precision electroweak measurements is being studied through non-perturbative lattice simulations.Experiments at the Large Hadron Collider are expected to discover the mechanism responsible for electroweak symmetry breaking, and will be critical for determining whether the technicolor framework provides the correct description of nature. In 2012 these experiments declared the discovery of a Higgs-like boson with mass approximately 7002125000000000000♠125 GeV/c2; such a particle is not generically predicted by technicolor models, but can be accommodated by them.
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