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Particle physics is a branch of physics that studies the elementary constituents of matter and radiation, and the interactions between them. It is also called "high energy physics", because many elementary particles do not occur under normal circumstances in nature, but can be created and detected during energetic collisions of other particles, as is done in particle accelerators.
Subatomic particles
Modern particle physics research is focused on subatomic particles, which have less structure than atoms. These include atomic constituents such as electrons, protons, and neutrons (protons and neutrons are actually composite particles, made up of quarks), particles produced by radiative and scattering processes, such as photons, neutrinos, and muons, as well as a wide range of exotic particles.
Strictly speaking, the term particle is a misnomer because the dynamics of particle physics are governed by quantum mechanics. As such, they exhibit wave-particle duality, displaying particle-like behavior under certain experimental conditions and wave-like behavior in others (more technically they are described by state vectors in a Hilbert space; see quantum field theory). Following the convention of particle physicists, we will use "elementary particles" to refer to objects such as electrons and photons, with the understanding that these "particles" display wave-like properties as well.
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free desk (SE PDX): FREE DESK computer desk - probably IKEA. metal and particle board - different levels for ke.. http://bit.ly/5W2Ixx
FreeListPort (Free List: Portland) Sat, 28 Nov 2009 00:11:38 -0000
free desk (SE PDX): FREE DESK computer desk - probably IKEA. metal and particle board - different levels for ke.. http://bit.ly/5W2Ixx
After fixing some glitches the biggest particle accelerator in the world is online http://is.gd/54W77 #lhc
ftarnogol (Fernando Tarnogol) Fri, 27 Nov 2009 23:53:13 -0000
After fixing some glitches the biggest particle accelerator in the world is online http://is.gd/54W77 #lhc
pogonip : /PO-gan-ip/n : a dense winter fog containing frozen particle that is formed in deep mountain valleys of the western U.S. "As the
ElatedLola (Lola Winkler) Fri, 27 Nov 2009 23:51:17 -0000
pogonip : /PO-gan-ip/n : a dense winter fog containing frozen particle that is formed in deep mountain valleys of the western U.S. "As the
@cawas particle
oipocorp (procopio) Fri, 27 Nov 2009 23:50:08 -0000
@cawas particle
Am I the only person who keeps reading "IAEA" as "IKEA", and wondering how Iran will be affected by the particle board embargo?
wanderfowl (Wanderfowl) Fri, 27 Nov 2009 23:43:02 -0000
Am I the only person who keeps reading "IAEA" as "IKEA", and wondering how Iran will be affected by the particle board embargo?
fuck unity split the universe to it´s parts see his smallest particle
ErbilK (Erbil Kücük) Fri, 27 Nov 2009 23:36:37 -0000
fuck unity split the universe to it´s parts see his smallest particle
Particle Data Group - An international collaboration that reviews particle physics and related areas of astrophysics, and compiles/analyzes data on particle properties.
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Physics Picture of the Week - Each week a classic image from the world of particle physics featuring discoveries, people or experiments is presented.
Acronyms of High Energy Physics - Organized list at Fermilab.
American Physical Society - Division of Particles and Fields.
Meta Description: [ APS Division of Particle and Fields ]
An Introduction to Particle Physics - This site is meant to give the reader a brief introduction into the fascinating world of particle physics.
Meta Description: [ An Introduction to Particle Physics ]
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CERN Public NewsGroups - Lists Public NewsGroups at CERN.
HEPDATA - High energy physics databases at Durham University (UK): reactions (cross-sections, structure functions), experiments, email addresses.
High Energy Physics Information Center (HEPIC) - Comprehensive lists of HEP information: events (conferences, workshops), employment opportunities, experiments, labs, phone numbers, references.
International Workshop on Frontier Science: Charm, Beauty and CP - The First International Workshop on Frontier Science will be held in the Frascati Laboratory of INFN on October 6-11,2002. The Workshop will be devoted to the physics of charm, beauty and CP violation, with special emphasys on the new B-factories and related experimental projects.
Muon Collider Feasibility Study - At Fermilab.
NALTA (North American Large area Time Coincidence Arrays) Collaboration - Educational/research experiments in North America studying cosmic rays with arrays of sparse detectors.
Meta Description: [ Home page for the North American Large area Time coincidence Array (NALTA) collaboration. A research/educational project between high schools and universities studying high energy cosmic rays. ]
Neutrino Factory and Muon Collider - At Brookhaven.
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Particle Physics in the UK - Directories, industry involvement, education.
SLAC Online Particle Physics Information - Organized collection of links to high energy physics resources: reference, experiments, conferences, directories, publications, education, software.
Meta Description: [ SLAC Library - Online Particle Physics Information ]
SPIRES - Databases and documents at SLAC. Mail and telephone directory of HEP people worldwide, conferences, institutions, experiments, preprints, books.
The Data Analysis BriefBook - A condensed handbook covering subjects in statistics, computing, analysis and related fields. Intended as introduction and reference for data analysis, scientists and engineers.
The Greatest Unsolved Problem in Particle Physics - Page devoted to the symmetry breaking, the mechanism that makes all mass.
Meta Description: [ Mechanism That Makes Fundamental Mass ]
The Muon Electric Dipole Moment Home Page - Description of plans for a dedicated experiment to measure the muon electric dipole moment. Source material and links to theories and experiments.
Meta Description: [ Electric Dipole Moment, CP Violation, SUSY ]
The Particle Detector BriefBook - A condensed handbook covering subjects around particle detectors, the underlying physics and the analysis of their data. Intended as introduction for newcomers and reference for physicists working in the field.
The Review of Particle Physics - An international collaboration that reviews Particle Physics and related areas of Astrophysics, and compiles and analyzes data on particle properties. Often cited publication in particle physics during the last decade.
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Through the Looking Glass - Overview article about the world wide chase to produce antiatoms.
Meta Description: [ Nature is the international weekly journal of science: a magazine style journal that publishes full-length research papers in all disciplines of science, as well as News and Views, reviews, news, features, commentaries, web focuses and more, covering all branches of science and how science impact... ]
U.S. Department of Energy Office of Nuclear Physics - Contains information about programs, laboratories, and universities funded by this office.
Meta Description: [ The Office of Nuclear Physics supports the community of scientists who seek to understand the fundamental forces and particles of nature as manifested in extended nuclear matter. ]
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US-HEPFOLK - Directory and survey of U.S. particle physicists.
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