Teaching the Standard Model in IB Physics by Debra Blake
... What is the smallest particle of matter? This is a question that has been explored by scientists since the beginning of time. The Greek philosophers were the first to ponder the fundamental constitution of matter. They considered, that if you could cut matter into smaller and smaller pieces you woul ...
... What is the smallest particle of matter? This is a question that has been explored by scientists since the beginning of time. The Greek philosophers were the first to ponder the fundamental constitution of matter. They considered, that if you could cut matter into smaller and smaller pieces you woul ...
From Superconductors to Supercolliders
... snaps back to its bulk value once the magnetic field has gone to zero. (Here you can imagine the stiffness of that ice sheet in response to some deformation, if you like.) Depending on the material, the coherence length can be either longer or shorter than the magnetic field penetration length; thes ...
... snaps back to its bulk value once the magnetic field has gone to zero. (Here you can imagine the stiffness of that ice sheet in response to some deformation, if you like.) Depending on the material, the coherence length can be either longer or shorter than the magnetic field penetration length; thes ...
Document
... The diagram contains two vertices where the coupling constants appear The diagram REPRESENTS the exchange of a virtual particle (the photon) between the charged particles that are the sources of the electromagnetic field ...
... The diagram contains two vertices where the coupling constants appear The diagram REPRESENTS the exchange of a virtual particle (the photon) between the charged particles that are the sources of the electromagnetic field ...
Beyond the Standard Model - Particle Physics Department (PPD)
... decaying to γγ or ZZ • Can measure invisible Higgs decays at 15-30% level • Will be possible to determine many Higgsparticle couplings at the 10-20% level ...
... decaying to γγ or ZZ • Can measure invisible Higgs decays at 15-30% level • Will be possible to determine many Higgsparticle couplings at the 10-20% level ...
Rules for Drawing Bohr Rutherford Diagrams and Reading
... One way to convey the mass number and the atomic number of an element is by using Standard Atomic Notation. This notation includes the mass number (placed at the upper left of the chemical symbol) and the atomic number (placed at the lower left of the symbol). For example, the Standard Atomic Notati ...
... One way to convey the mass number and the atomic number of an element is by using Standard Atomic Notation. This notation includes the mass number (placed at the upper left of the chemical symbol) and the atomic number (placed at the lower left of the symbol). For example, the Standard Atomic Notati ...
Document
... Now note that the Big Bang was purely energy. Energy can divide into matter and antimatter, but it should divide into equal amounts… Where did all the antimatter go? Maybe there are big clumps of antimatter elsewhere in the universe? Perhaps we are just inside a big clump of matter, and other hu ...
... Now note that the Big Bang was purely energy. Energy can divide into matter and antimatter, but it should divide into equal amounts… Where did all the antimatter go? Maybe there are big clumps of antimatter elsewhere in the universe? Perhaps we are just inside a big clump of matter, and other hu ...
Ask a scientist answers
... antineutrino (and giving them, and the daughter nucleus some kinetic energy, assuming there are energy leftovers). Q12: “Also, how does one of the down…” A12: Nice follow-up. Remember that we said the quantum picture for the fundamental forces is that there are “force carriers” (gauge bosons) that m ...
... antineutrino (and giving them, and the daughter nucleus some kinetic energy, assuming there are energy leftovers). Q12: “Also, how does one of the down…” A12: Nice follow-up. Remember that we said the quantum picture for the fundamental forces is that there are “force carriers” (gauge bosons) that m ...
Slides
... Motivation - Grand Unification If two particles collide with Planck Scale energy their gravitational interaction would be as strong as the other forces – one hopes to unify all forces into a single simple theory ...
... Motivation - Grand Unification If two particles collide with Planck Scale energy their gravitational interaction would be as strong as the other forces – one hopes to unify all forces into a single simple theory ...
Fulltext PDF
... Ever since the discovery of the electron more than 100 years ago, scientists have asked the questions –“what is our universe made of?” and “why is the universe the way it is?” Not long before, it was found that these two questions are related to each other. The interactions of particles in the unive ...
... Ever since the discovery of the electron more than 100 years ago, scientists have asked the questions –“what is our universe made of?” and “why is the universe the way it is?” Not long before, it was found that these two questions are related to each other. The interactions of particles in the unive ...
Slides
... Fortunately nature has given us some help – W and Z – calibrate leptons – And at LHC – the top quark – calibrate jets, b-tags and MET ...
... Fortunately nature has given us some help – W and Z – calibrate leptons – And at LHC – the top quark – calibrate jets, b-tags and MET ...
CHAPTER 5 : EXAMPLES IN QUANTUM γ e- → γ e- ∎ ELECTRODYNAMICS
... These were important experiments in the history of high-energy physics. From the particle data group, the figure shows the ratio R = σ ( e e → hadrons ) / σ ( e ebar → μ μbar) . The underlying process in hadron production is e- + e+ → q + qbar. Neglecting QCD interactions we would just have R = cons ...
... These were important experiments in the history of high-energy physics. From the particle data group, the figure shows the ratio R = σ ( e e → hadrons ) / σ ( e ebar → μ μbar) . The underlying process in hadron production is e- + e+ → q + qbar. Neglecting QCD interactions we would just have R = cons ...
06-Nuclear shorter
... protons They must conserve charge If we carry in 4Gev (1.6x10-19 . 4x109= 4x10-10 J) ...
... protons They must conserve charge If we carry in 4Gev (1.6x10-19 . 4x109= 4x10-10 J) ...
Standard Model
The Standard Model of particle physics is a theory concerning the electromagnetic, weak, and strong nuclear interactions, as well as classifying all the subatomic particles known. It was developed throughout the latter half of the 20th century, as a collaborative effort of scientists around the world. The current formulation was finalized in the mid-1970s upon experimental confirmation of the existence of quarks. Since then, discoveries of the top quark (1995), the tau neutrino (2000), and more recently the Higgs boson (2013), have given further credence to the Standard Model. Because of its success in explaining a wide variety of experimental results, the Standard Model is sometimes regarded as a ""theory of almost everything"".Although the Standard Model is believed to be theoretically self-consistent and has demonstrated huge and continued successes in providing experimental predictions, it does leave some phenomena unexplained and it falls short of being a complete theory of fundamental interactions. It does not incorporate the full theory of gravitation as described by general relativity, or account for the accelerating expansion of the universe (as possibly described by dark energy). The model does not contain any viable dark matter particle that possesses all of the required properties deduced from observational cosmology. It also does not incorporate neutrino oscillations (and their non-zero masses).The development of the Standard Model was driven by theoretical and experimental particle physicists alike. For theorists, the Standard Model is a paradigm of a quantum field theory, which exhibits a wide range of physics including spontaneous symmetry breaking, anomalies, non-perturbative behavior, etc. It is used as a basis for building more exotic models that incorporate hypothetical particles, extra dimensions, and elaborate symmetries (such as supersymmetry) in an attempt to explain experimental results at variance with the Standard Model, such as the existence of dark matter and neutrino oscillations.