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Topic: Oh My God particle


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  Encyclopedia :: encyclopedia : Particle physics   (Site not responding. Last check: 2007-11-01)
Particles erupt from the collision point of two relativistic (100GeV) gold ions in the STAR detector of the Relativistic Heavy Ion Collider.
Particle physics is a branch of physics that studies the elementary constituents of matter and radiation, and the interactions between them.
All the particles observed to date have been catalogued in a quantum field theory called the Standard Model, which is often regarded as particle physics' best achievement to date.
www.hallencyclopedia.com /Particle_physics   (2035 words)

  
 Cosmic ray - Wikipedia, the free encyclopedia
Then, during the decade from 1927 to 1937 a wide variety of experimental investigations demonstrated that the primary cosmic rays are mostly positive charged particles, and the secondary radiation observed at ground level is composed primarily of a "soft component" of electrons and photons and a "hard component" of penetrating particles, muons.
The muon was initially believed to be the unstable particle predicted by Hideki Yukawa in 1935 in his theory of the nuclear force.
He concluded that extensive particle showers are generated by high-energy primary cosmic-ray particles that interact with air nuclei high in the atmosphere, initiating a cascade of secondary interactions that ultimately yield a shower of electrons, photons, and muons that reach ground level.
en.wikipedia.org /wiki/Cosmic_ray   (1673 words)

  
 List of particles   (Site not responding. Last check: 2007-11-01)
An elementary particle is a particle with no measurable internal structure, that is, it is not a composite of other particles.
In quantum field theory, these are the particles which are created and annihilated by the field operators in the Lagrangian.
Fermions have half-integral spin; for all known Elementary particles this is ½.
list-of-particles.iqnaut.net   (953 words)

  
 Oh-My-God particle - Free net encyclopedia   (Site not responding. Last check: 2007-11-01)
The Oh-My-God particle (a play on the nickname "God particle" for the Higgs boson) is the nickname given to a particle observed on the evening of October 15, 1991, over Salt Lake City, Utah, estimated to have an energy of approximately 3.2 × 10
Because of its mass the Oh-My-God particle would have experienced very little influence from cosmic electromagnetic and gravitational fields, and so its trajectory should be easily calculable.
At a January 12, 2005 conference of the American Astronomical Society, particle physicist Glennys Farrar presented a paper tracing five similar very-high-energy cosmic rays, all of which were detected between 1993 and 2003, to a pair of colliding galaxy clusters 450 million light-years from Earth.
www.netipedia.com /index.php/OMG_particle   (434 words)

  
 physics - List of particles
See Isotope table (complete) for a list of isotopes.
Isotope table (complete) for a list of isotopes.
Particle Data Guide K. Hagiwara et al., Phys.
www.physicsdaily.com /physics/List_of_particles   (722 words)

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