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Calculation of the nucleon axial charge in lattice QCD
Calculation of the nucleon axial charge in lattice QCD

Asymptotic Freedom and Quantum
Asymptotic Freedom and Quantum

... paper of 1960 Nambu studied a quantum field theory for hypothetical fermions with chiral symmetry. This symmetry is global and not of the gauge type. He assumes that it is spontaneously broken, and he can then show that there is a bound state of the fermions, which he interprets as the pion. This re ...
Studies of effective theories beyond the Standard Model
Studies of effective theories beyond the Standard Model

... is naturally no longer viable for any physicist. The experiments have developed from table-top designs constructed by a single scientist to huge apparatuses built and governed by collaborations of hundreds of physicists contained in enormous cavities. Experiments are not confined to the Earth but se ...
The MOLE
The MOLE

...  The mass (in units of grams) of 6.02 x 1023 particles of a substance OR  The mass number on the periodic table rounded to one decimal place (in units of grams) ...
The beginning of physics
The beginning of physics

... The Standard Model.  Describes all known particles and their electroweak and strong interactions.  No significant deviations from SM observed to date.  Observed differences between forces due to non-exact symmetry.  Possibly the best physical theory in the history of physics. ...
C - Physics
C - Physics

strange_quarks_nucleon
strange_quarks_nucleon

CMSSM
CMSSM

... • The general MSSM is rather complicated and suffers from the lack of predictiveness due to a large number of free parameters (over 120), most of which arise from the SUSY breaking sector. • The observed rareness of flavour changing neutral currents (FCNCs) and CP-violation restrictions suggest that ...
CMSSM A profile likelihood analysis of the with Genetic Algorithms
CMSSM A profile likelihood analysis of the with Genetic Algorithms

Lecture 7 1.1. If we add two vectors of lengths r and r the sum can
Lecture 7 1.1. If we add two vectors of lengths r and r the sum can

... 3.1. The neutron and proton are different states of the same particle, the nucleon, with different values of a new quantum number called isospin. Electromagnetism (charge and magnetic moment) and weak interactons responsible for beta decay are small effects in comparsion to the nuclear force. The ma ...
The Weak Interaction
The Weak Interaction

Beyond the Standard Model
Beyond the Standard Model

... between 80 and 100 MeV, and the charm quark with a mass of about 1.5 GeV. The leptons in this family are the muon with roughly 105 MeV mass, and its associated neutrino, the muon neutrino. The final, third, family contains the bottom quark with a mass of about 4.5 GeV, and the extraordinary heavy to ...
Gregory Moore - Rutgers Physics
Gregory Moore - Rutgers Physics

... With a great boost from string theory, after 40 years of intellectual ferment a new field has emerged with its own distinctive character, its own aims and values, its own standards of proof. One of the guiding principles is certainly Hilbert’s 6th Problem (generously interpreted): Discover the ultim ...
Fulltext PDF - Indian Academy of Sciences
Fulltext PDF - Indian Academy of Sciences

16_04_2013 - IB Phys.. - hrsbstaff.ednet.ns.ca
16_04_2013 - IB Phys.. - hrsbstaff.ednet.ns.ca

The relation of colour charge to electric charge (E/c) −P2 −Q2 −(mc
The relation of colour charge to electric charge (E/c) −P2 −Q2 −(mc

Efficient and robust analysis of complex scattering data under noise... microwave resonators S. Probst, F. B. Song,
Efficient and robust analysis of complex scattering data under noise... microwave resonators S. Probst, F. B. Song,

The True End of Theoretical Physics
The True End of Theoretical Physics

Color Glass Condensate at RHIC
Color Glass Condensate at RHIC

arXiv:1412.5987v1 [hep-ex] 18 Dec 2014
arXiv:1412.5987v1 [hep-ex] 18 Dec 2014

Extra Dimensions?
Extra Dimensions?

... The Standard Model of Particle Physics ...
Extension of Lorentz Group Representations for Chiral Fermions
Extension of Lorentz Group Representations for Chiral Fermions

The Hierarchy Problem in the Standard Model and
The Hierarchy Problem in the Standard Model and

Searches for FCNC Decays Bs(d) → μ+μ
Searches for FCNC Decays Bs(d) → μ+μ

... Grand unification of forces? ...
New state of matter created at CERN
New state of matter created at CERN

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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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