Standard Model
... standing waves set up around the nucleus By using an even number of wavelengths, he arrived at the same conclusion as Niels Bohr, there are discrete energy levels Einstein said “It may look crazy but it really is sound” Evidence for the De Broglie model came with the double slit experiment and ve ...
... standing waves set up around the nucleus By using an even number of wavelengths, he arrived at the same conclusion as Niels Bohr, there are discrete energy levels Einstein said “It may look crazy but it really is sound” Evidence for the De Broglie model came with the double slit experiment and ve ...
PHY583 - Test 3 - 20.6.12 - with solution
... A type of hadron made up of a quark and an antiquark. All have spin 0 or 1, Their masses between that of the electron & proton. All mesons are known to decay finally into electrons, positrons, neutrinos & photons. Eg. Pion and Kaon ...
... A type of hadron made up of a quark and an antiquark. All have spin 0 or 1, Their masses between that of the electron & proton. All mesons are known to decay finally into electrons, positrons, neutrinos & photons. Eg. Pion and Kaon ...
A modern view of forces - HEP Educational Outreach
... The EM force • The quantum description of EM interactions of charged particles is called QED (Quantum ElectroDynamics). Richard Feynman was a pioneer in developing QED. • Thanks to him (and others), we can draw diagrams of interactions, apply well known “Feynman rules” to them, and calculate the ra ...
... The EM force • The quantum description of EM interactions of charged particles is called QED (Quantum ElectroDynamics). Richard Feynman was a pioneer in developing QED. • Thanks to him (and others), we can draw diagrams of interactions, apply well known “Feynman rules” to them, and calculate the ra ...
quarks and leptons - answers to practice questions
... difference: muon has a much greater rest mass ...
... difference: muon has a much greater rest mass ...
The Standard Model - Department of Physics and Astronomy
... Model – theorem: for each symmetry a conservation law A few most of us are familiar with • Mass-energy, momentum And some a little less familiar • Charge, Color, Spin, Angular Momentum, baryon #, lepton # These limit what is possible…. ...
... Model – theorem: for each symmetry a conservation law A few most of us are familiar with • Mass-energy, momentum And some a little less familiar • Charge, Color, Spin, Angular Momentum, baryon #, lepton # These limit what is possible…. ...
Strangeness production
Strangeness production is a signature and a diagnostic tool of quark–gluon plasma (or QGP) formation and properties. Unlike up and down quarks, from which everyday matter is made, strange quarks are formed in pair-production processes in collisions between constituents of the plasma. The dominant mechanism of production involves gluons only present when matter has become a quark–gluon plasma. When quark–gluon plasma disassembles into hadrons in a breakup process, the high availability of strange antiquarks helps to produce antimatter containing multiple strange quarks, which is otherwise rarely made. Similar considerations are at present made for the heavier charm flavor, which is made at the beginning of the collision process in the first interactions and is only abundant in the high-energy environments of CERN's Large Hadron Collider.