Where results make sense
About us   |   Why use us?   |   Reviews   |   PR   |   Contact us  

Topic: Elementary particle

Related Topics

  Elementary Particle Physics Glossary
Particle theories predict the probabilities of various possible events occurring when many similar collisions or decays are studied.
A process in which a particle decays or it responds to a force due to the presence of another particle (as in a collision).
The rest mass of a particle is the mass defined by the energy of the isolated (free) particle at rest, divided by the speed of light squared.
hepwww.ph.qmw.ac.uk /epp/glossary.html   (2080 words)

  Particle physics - Wikipedia, the free encyclopedia
Particles explode from the collision point of two relativistic (100 GeV per nucleon) 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.
Strictly speaking, the term particle is a misnomer because the dynamics of particle physics are governed by quantum mechanics.
en.wikipedia.org /wiki/Particle_physics   (2104 words)

 Elementary particle - Wikipedia, the free encyclopedia
In the modern theory of particle physics, the Standard Model, the quarks, leptons, and gauge bosons are elementary particles.
Elementary particles are grouped according to spin: particles normally associated with matter are fermions, having spin 1/2; they are divided into twelve flavours.
Particles associated with fundamental forces are bosons, having spin 1 (or 2 for gravity).
en.wikipedia.org /wiki/Elementary_particle   (1534 words)

 HighBeam Encyclopedia - elementary particles
The strong force is mediated by the gluon, the weak force by the W and Z particles, and gravity is thought to be mediated by the graviton.
By the 1950s these elementary particles were also being observed in the laboratory as a result of particle collisions produced by a particle accelerator.
One of the current frontiers in the study of elementary particles concerns the interface between that discipline and cosmology.
www.encyclopedia.com /html/e1/elementr-p.asp   (2292 words)

 Elementary Particles - MSN Encarta
Elementary-particle physics—the study of elementary particles and their interactions—is also called high-energy physics, because the energy involved in probing extremely small distances is very high, as the uncertainty principle dictates.
Particle physics is the latest stage in the study of smaller and smaller building blocks of matter.
Particles may also be classified in terms of their spin, or angular momentum, as bosons or fermions.
uk.encarta.msn.com /encyclopedia_761562335/Elementary_Particles.html   (750 words)

 [No title]   (Site not responding. Last check: 2007-10-17)
In particle physics, an elementary particle refers to a particle of which other, larger particles are composed.
The proton and neutron, in turn, are composed of more elementary particles known as quarks.
There might also be other elementary particles not described by the Standard Model, the most prominent being the graviton, the hypothetical particle that carryies the gravitational force.
wikiwhat.com /encyclopedia/e/el/elementary_particle.html   (465 words)

 Particle - Wikipedia, the free encyclopedia
Elementary particle, in particle physics, a particle of which larger particles are composed (see also list of particles)
Subatomic particle, in particle physics, which may be either an Elementary particle or a composite particle
Particle displacement, in wave physics, a measurement of distance of the movement of a particle in a medium as it transmits a wave
en.wikipedia.org /wiki/Particle   (217 words)

 elementary particles. The Columbia Encyclopedia, Sixth Edition. 2001-05
The elementary particles of matter interact with one another through four distinct types of force: gravitation, electromagnetism, and the forces from strong interactions and weak interactions.
Fermi-Dirac statistics apply to those particles restricted by the Pauli exclusion principle; particles obeying the Fermi-Dirac statistics are known as fermions.
The strongly interacting particles were classified as either mesons or baryons; it is now known that mesons consist of quark-antiquark pairs and that baryons consist of quark triplets.
www.bartleby.com /65/el/elementr-p.html   (2145 words)

 elementary particle Comparison Table   (Site not responding. Last check: 2007-10-17)
Particle that acts as the transmitters of forces.
High mass elementary particles that are influenced by the strong nuclear force.
Elementary particle like the electron and neutrino that do not experience the strong nuclear force.
www.site.uottawa.ca:4321 /astronomy/elementaryparticle_table.html   (151 words)

 Electron article - Electron hydrogen atom Elementary particle Fermion Lepton C Radius Gravity - What-Means.com
The electron is one of a class of subatomic particles called leptons which are believed to be fundamental particles (that is, they cannot be broken down into smaller constituent parts).
The word "particle" is somewhat misleading however, because quantum mechanics show that electrons sometimes behave like a wave, e.g.
In the Standard Model of particle physics, it forms a doublet in SU(2) with the electron neutrino, as they interact through the weak interaction.
www.what-means.com /encyclopedia/Electron   (719 words)

 elementary particle concept from the Astronomy knowledge base   (Site not responding. Last check: 2007-10-17)
For example, the carrier boson for the electromagnetic force is the photon., Particle that acts as the transmitters of forces.
Leptons include the electron family and the muon family., Elementary particle that does not participate in the strong interactions, including electrons, muons, and neutrinos., Elementary particle that have no measurable size and are not influenced by the strong nuclear force.
The electron is an example of a lepton., Elementary particle like the electron and neutrino that do not experience the strong nuclear force.
www.site.uottawa.ca:4321 /astronomy/elementaryparticle.html   (559 words)

 Elementary Particle Physics
Target in a particle physics detector: the particle beam hits 4 thin wires, the resulting particle reactions are subsequently analysed.
Elementary particle physicists study the smallest building blocks of matter and analyse the forces which act between them.
In their search for new elementary particles, the researchers push forward the frontiers of current theory.
www.helmholtz.de /en/Research_Fields/Structure_of_Matter/Elementary_Particle_Physics.html   (277 words)

 Elementary Particles
Although the table for elementary particles in Figure 15-02 is somewhat reminiscent to the periodic table discovered way back in 1869, it represents the cumulative efforts of theoretical and experimental research in physics over the last fifty years.
The strong residual interaction is experienced by hardons (all the particles affected by the strong nuclear force) and generated by the quarks within.
The modern theory of elementary particles depends heavily on the concept of gauge invariance, which was used to describe some global changes that do not have any effect on observation.
universe-review.ca /F15-particle.htm   (9875 words)

 USC Elementary Particle Physics
Elementary Particle Physics is the study of the structure of matter and the fundamental laws governing matter deep inside the atom.
The members of the Particle Physics group at USC have contributed to the development of the above ideas over the years, and currently their main emphasis is on superstring theory and related topics.
Professor Itzhak Bars is interested in superstring theory and quantum gauge field theory and their application to the Standard Model of elementary particles, unification of forces, and cosmology.
www.usc.edu /dept/physics/Brochure/ElementaryParticles.html   (713 words)

 The Back Page: Charting the Course for Elementary Particle Physics
The committee that was assembled included quite a few individuals from outside the field of particle physics; in fact, half the committee members were not experts in particle physics, and yet each one had an important perspective to contribute.
As the field of particle physics took shape in the middle of the century, America’s scientists focused on experiments designed to measure and explain the properties and forces governing the ultimate constituents of matter.
The committee felt strongly that because of the increasing cost and complexity of particle physics experiments, and the need to deploy public funds in the most effective and responsible manner, it is more important than ever for all the major programs in particle physics to leverage their resources by working together internationally.
www.aps.org /publications/apsnews/200607/backpage.cfm   (1993 words)

 McGraw-Hill AccessScience: Elementary particle
At one time the elementary particles of matter were the atoms of the chemical elements, but the atoms are now known to be compounds of the electron, proton, and neutron.
It is convenient, however, to continue to call hadrons elementary particles to distinguish them from their compounds (atomic nuclei, for instance); this usage is also justified by the fact that quarks are not strictly particles, because, as far as is known, they cannot be isolated.
The term fundamental particle can be used to denote particles that are truly fundamental constituents of matter and are not compounds in any sense.
www.accessscience.com /Encyclopedia/2/22/Est_227700_frameset.html   (198 words)

 [No title]   (Site not responding. Last check: 2007-10-17)
It now appears that elementary particles are fundamental but not immutable, in contrast to the views of many early Greek philosophers.
D. A testable prediction of the minimal Standard Model is the existence of a neutral spin-zero elementary particle H called the Higgs boson, associated with the Higgs field.
E. Another outstanding problem in elementary particle physics is the very small asymmetry between the properties of matter and antimatter (particles and antiparticles), related to CP violation.
www.hep.net /documents/drell/sec3.html   (4135 words)

Plenty of time is dedicated to working the laboratory so that new teachers will become comfortable with the entire experimental process that their students will go through: thinking of a question, designing an experiment to answer their question, collecting the necessary data, analyzing their data, and evaluating their results.
PARTICLE Day - This is a one-day poster conference at the end of the school year where students have the opportunity to share their research with their peers.
For a detailed evaluation of the PARTICLE program, including how it coincides with the state curriculum, National Science Education Standards, and the Authentic Inquiry Framework, refer to Rachael Anderman’s Masters Thesis.
web1.pas.rochester.edu /~pavone/particle-www   (857 words)

 Elementary particle at opensource encyclopedia   (Site not responding. Last check: 2007-10-17)
There might also be other elementary particles not described by the Standard Model, the most prominent being the graviton, the hypothetical particle that carries the gravitational force.
According to string theorists [Greene, Elegant Universe], each kind of fundamental particle corresponds to a different resonant vibrational pattern of a string (strings are constantly vibrating in standing wave patterns, similar to the way that quantized orbits of electrons in the Bohr model vibrate in standing wave patterns according to the de Broglie hypothesis).
The sparticles are heavier (and more energetic) than the ordinary particles: they are so heavy that existing particle colliders would not large (and energetic) enough to be able to detect them.
www.wiki.tatet.com /Elementary_particle.html   (1244 words)

 SLAC - Massive Particle Search - Physics
Such particles would have to have been created during the early history of the universe.
Particles would have to be sufficiently abundant so that there was of order one such particle in 0.01 to 0.1 grams of some selected material.
Even with the requirement that the particle be stable, it is worthwhile to search for particles with masses far beyond the reach of current or projected accelerators.
www.slac.stanford.edu /exp/mps/FCS/MPS_phys.htm   (307 words)

 Glossary: SLAC Virtual Visitor Center
The particles in the jet are chiefly hadrons
In the latter variety, the passage of the particle is synchronized with the phase of the accelerating field.
A photon is one of the fundamental particle
www2.slac.stanford.edu /vvc/glossary.html   (5563 words)

 UA Physics Department - Theoretical Elementary Particle Physics
Elementary particle physics is the quest to discover and understand the properties and interactions of the fundamental building blocks of matter.
By exploring the interplay between string theory and particle physics, my goal is to understand the novel ways in which the two can enrich each other and ultimately provide new and unexpected perspectives on physics beyond the Standard Model.
Johann Rafelski (rafelski@physics.arizona.edu): Exploration of quark-gluon plasma formed at RHIC and in the early universe; strongly interacting probes (strange and charmed particles) for the study of deconfined phase of QCD; structure of the QCD and QED vacuum.
www.physics.arizona.edu /physics/research/theorpart.html   (704 words)

 A brief history
The animated neutral particle, marked N, represents a neutral elementary particle such as a neutrino colliding with one of the nuclei of the atoms in the fluid, producing a cascade of charged particles that then decay into other charged particles.
Particle physicists have to decode tracks like those above in order to deduce basic information about the observed particles, such as the electric charge, particle spin, mass, lepton number, baryon number, parity and other quantum numbers that turn out to be useful in describing the elementary particle side of Nature.
Alpha particles are discovered, and later shown to be helium nuclei consisting of two neutrons and two protons.
www.superstringtheory.com /experm/exper1.html   (651 words)

Try your search on: Qwika (all wikis)

  About us   |   Why use us?   |   Reviews   |   Press   |   Contact us  
Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.