Law of Conservation of Muons
... The apparent absence of muon-electron transitions without neutrinos, such as p. e+y, p. 3e, and p +p ~e +p, leads one to suspect that there is a new conservation law forbidding them. Calculations' of the rate of such processes, assuming no such law exists, have indicated that it is hard to understan ...
... The apparent absence of muon-electron transitions without neutrinos, such as p. e+y, p. 3e, and p +p ~e +p, leads one to suspect that there is a new conservation law forbidding them. Calculations' of the rate of such processes, assuming no such law exists, have indicated that it is hard to understan ...
neutrinos: mysterious particles with fascinating features, which led to
... decays involving the light particles that we call leptons. The Standard Model of particle physics takes into account that At that time, they knew the electron, the neutrino (as a later (in 1975) yet another cousin of the electron was found, hypothesis) and the muon, µ− , which had been discovered in ...
... decays involving the light particles that we call leptons. The Standard Model of particle physics takes into account that At that time, they knew the electron, the neutrino (as a later (in 1975) yet another cousin of the electron was found, hypothesis) and the muon, µ− , which had been discovered in ...
Quantum mechanic and Particle physics
... developing schematic diagrams that represent various interactions. • The diagrams themselves can be subjected to various operations which then correspond to an interaction that may, or may not, occur - depending on other factors, like energy and charge conservation, etc. • Physicists now use Feynm ...
... developing schematic diagrams that represent various interactions. • The diagrams themselves can be subjected to various operations which then correspond to an interaction that may, or may not, occur - depending on other factors, like energy and charge conservation, etc. • Physicists now use Feynm ...
Introduction: what is quantum field theory
... We will review Dirac’s argument for anti-particles later in this course, together with the better understanding that we get from viewing particles in the framework of quantum field theory. For now, we will quickly sketch the circumstances in which we expect the number of particles to change. Conside ...
... We will review Dirac’s argument for anti-particles later in this course, together with the better understanding that we get from viewing particles in the framework of quantum field theory. For now, we will quickly sketch the circumstances in which we expect the number of particles to change. Conside ...
Broken symmetry revisited - Homepages of UvA/FNWI staff
... The use of symmetry considerations has been extended significantly by the observation that a symmetry of the action is not automatically a symmetry of the groundstate of a physical system. If the action is invariant under some symmetry group G and the groundstate only under a subgroup H of G, the sy ...
... The use of symmetry considerations has been extended significantly by the observation that a symmetry of the action is not automatically a symmetry of the groundstate of a physical system. If the action is invariant under some symmetry group G and the groundstate only under a subgroup H of G, the sy ...
Physical Laws of Nature vs Fundamental First Principles
... • We have derived experimentally verifiable laws of Nature based only on a few fundamental first principles, guided by experimental and observation evidences. • We have discovered three fundamental principles: the principle of interaction dynamics (PID), (MA-Wang, 2012), the principle of representat ...
... • We have derived experimentally verifiable laws of Nature based only on a few fundamental first principles, guided by experimental and observation evidences. • We have discovered three fundamental principles: the principle of interaction dynamics (PID), (MA-Wang, 2012), the principle of representat ...
The Atom
... eventually you will end up with the smallest carbon particle that cannot be divided into other particles without changing the properties of carbon. The smallest particle of an element that retains the properties of the element is called an atom. How small do you think atoms are? ...
... eventually you will end up with the smallest carbon particle that cannot be divided into other particles without changing the properties of carbon. The smallest particle of an element that retains the properties of the element is called an atom. How small do you think atoms are? ...
The Quantum-Mechanical Model of the Atom
... • The wave characteristics of matter were clearly included and defined. • The energies were correctly determined; these were the same as the Bohr model but on a much firmer footing. • Other things such as the angular momentum of the electron orbits naturally emerged from the solution. ...
... • The wave characteristics of matter were clearly included and defined. • The energies were correctly determined; these were the same as the Bohr model but on a much firmer footing. • Other things such as the angular momentum of the electron orbits naturally emerged from the solution. ...
ATLAS experiment at the CERN Large Hadron Collider
... One key objective of the LHC is to understand the origin of mass – is it due to a universal Higgs field? (A Higgs field everywhere with the Higgs boson as the force carrier?). Massless particles are not impeded by the Higgs field and, thus, travel at the speed of light. Analogy: Downhill skier exper ...
... One key objective of the LHC is to understand the origin of mass – is it due to a universal Higgs field? (A Higgs field everywhere with the Higgs boson as the force carrier?). Massless particles are not impeded by the Higgs field and, thus, travel at the speed of light. Analogy: Downhill skier exper ...
Introduction to Strings
... whose tensions scale as the inverse power of the string coupling • It is a BPS object which preserves the half ...
... whose tensions scale as the inverse power of the string coupling • It is a BPS object which preserves the half ...