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Topic: Particle physics


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In the News (Sat 25 Nov 17)

  
  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   (2108 words)

  
 Particle physics - Wikipedia
Particle physics, also called high energy physics, is a branch of physics which studies the elementary constituents of matter, 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.
The 20th century explorations of nuclear physics and quantum physics, culminating with proofs of nuclear fission and nuclear fusion, gave rise to an active industry of generating one atom from another, even rendering possible (although not feasible economically) the transmutation of lead into gold.
wikipedia.findthelinks.com /pa/Particle_physics.html   (1218 words)

  
 particle physics - Hutchinson encyclopedia article about particle physics   (Site not responding. Last check: 2007-10-22)
Subatomic particles include the elementary particles (quarks, leptons, and gauge bosons), which are indivisible, so far as is known, and so may be considered the fundamental units of matter;; and the hadrons (baryons, such as the proton and neutron, and mesons), which are composite particles, made up of two or three quarks.
The electromagnetic force (1) acts between all particles with electric charge, and is related to the exchange between these particles of gauge bosons called photons, packets of electromagnetic radiation.
The unknown particle, which the researchers classified as X(3872), was detected in the decay products of beauty meson particles; it weighed as much as a single atom of helium and lasted a billionth of a trillionth of a second, an unusually long lifetime for a subatomic particle of this size.
encyclopedia.farlex.com /particle+physics   (882 words)

  
 An introduction to Particle Physics
Particle physics is the study of the basic elements of matter and the forcesacting among them.
The highenergy collisions between particles that physicists are interested in do occurnaturally but the events are unpredictable and the number that can be observed(in cosmic rays) is low.
The drawback is thatthe faster a particle travels, the harder it is to keep it moving in a circlebut, in the largest circles (LEP is the largest in the world with acircumference of 27km) less energy is wasted when accelerating particles to highspeeds.
hepwww.rl.ac.uk /Pub/Phil/ppintro/ppintro.html   (827 words)

  
 Theoretical Elementary Particle Physics - Chicago
The Particle Theory Group at the University of Chicago, part of the Enrico Fermi Institute, carries out research on a wide range of theoretical topics in formal and phenomenological particle physics, including field theory, string theory, supersymmetry, the standard model, cosmology, and mathematical physics.
Much of the success of particle physics is based on situations where there is a small parameter (such as the fine structure constant in QED) and quantities of physical interest can be expanded in a perturbative series in terms of this small parameter.
Two of the most relevant open questions in particle physics are the ones related to the origin of mass and to the existence of a unified theory of all known elementary particle interactions.
physics.uchicago.edu /t_part.html   (3097 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.
In mathematical physics pioneered research on the physical applications of quantum groups in exactly solvable lattice models, and the relationship between such lattice models and conformal field theory.
www.usc.edu /dept/physics/Brochure/ElementaryParticles.html   (713 words)

  
 Particle Physics Department at RAL
The Particle Physics Department (PPD) at RAL is responsible for co-ordinating the UK experimental programme in particle physics.
Particle Physics strives to understand the structure of matter at the deepest possible level.
We run a number of Public Understanding of Science events for schools and the public, including Particle Physics Masterclasses (the next event is planned for 2007).
hepwww.rl.ac.uk /pub/ppd.html   (298 words)

  
 Experimental Particle Physics   (Site not responding. Last check: 2007-10-22)
Particle physics has two main aims: to find and determine the properties of the ultimate constituents of matter, and to investigate the forces through which these interact.
In the 1990s the Group was part of the OPAL Experiment that studied the W and Z particles in great detail and established that there are only three types of light neutrino and hence probably only six quarks and six leptons.
By looking at the difference between the way B particles and their antiparticles decay they are able to study so-called CP violation which might help explain why the Universe is dominated by particles with very few antiparticles.
hepwww.ph.qmw.ac.uk   (432 words)

  
 Particle Physics Education Sites   (Site not responding. Last check: 2007-10-22)
Probing Particles - a comprehensive and straight-forward introduction to particle physics.
Particle Physics Activities - a set of seven, each with a worksheet and description and teacher info.
Physics and Education at Cornell's CESR - virtual tours of experiments, as well as info on fundamentals and theory.
particleadventure.org /particleadventure/other/othersites.html   (1133 words)

  
 Particle Physics - on-line review   (Site not responding. Last check: 2007-10-22)
Welcome to Particle Physics, an information portal service linking to electronic publishing and other resources in the fields of experimental and theoretical high energy particle physics (including astronomy, astrophysics, and cosmology).
Particle Physics is maintained on a sponsored basis by Eagle Intermedia Publishing Ltd..
Particle Physics has no connection whatsoever with printed journals (or electronic versions of printed journals) in the field, being run as a purely independent service to the international physics community.
www.eagle.co.uk /ppj/home.html   (117 words)

  
 PBPL Home Page
Relativistic particle beams and the accelerators which produce them have served as cutting edge tools in scientific research for three-quarters of a century.
In the present time, beam physics is a vibrant, cross-disciplinary enterprise, which intersects heavily with high-energy density science, plasma physics, ultra-fast lasers, nonlinear dynamics and various high-field/high-power technologies.
In addition, applications extend from the energy frontier in particle physics, to ultra-fast phenomena in biology and materials, and to industrial and medical uses.
pbpl.physics.ucla.edu   (178 words)

  
 Inquiring Minds
Particle physics and astrophysics go hand in hand: studying the universe at the smallest and biggest scales.
Particle physicists try to understand the nature of nature at the smallest scales possible.
Particles called quarks and leptons seem to be the fundamental building blocks - but perhaps there is something even smaller.
www.fnal.gov /pub/inquiring/matter   (383 words)

  
 Particle Physics   (Site not responding. Last check: 2007-10-22)
The purpose of high-energy particle physics is to understand the properties and states of the basic building blocks of matter.
The list of physics results is much larger than the few topics we have mentioned, since each experiment we are involved in is a rich source of new information about the structure of matter.
Neutrino physics is currently one of the most active areas of research in modern particle physics.
columbia-physics.net /research/particle_phys.htm   (2884 words)

  
 Laboratory for Particle Physics Home Page (LTP)
A large number of experiments have established the validity of a theoretical framework for the electromagnetic, weak and strong (colour) interactions between the fundamental particles that form the basis of all known matter: quarks and leptons, which are grouped into three families.
The interactions among the matter particles are described by the exchange of interaction particles.
The search for and study of the Higgs boson is the main task for particle physicists in this decade, as well as the search for a new symmetry (Supersymmetry) which establishes a relation between the matter particles and the interaction particles and incorporates gravity.
ltp.web.psi.ch   (197 words)

  
 Encyclopedia article on Particle physics [EncycloZine]   (Site not responding. Last check: 2007-10-22)
In high-energy physics, the word theorist usually refers to a theoretical physicist whose primary goal is to develop theoretical and mathematical tools that may describe physical phenomena in (far) future, while the desire to understand current experiments and experiments in near future is secondary.
Among the possible physical phenomena that they try to study we find supersymmetry, Higgs mechanism, hierarchy problem, Randall-Sundrum models and other models with extra dimensions, and many others.
Other important goals in particle physics are the determination of the neutrino masses and the clarification of the existence of double beta decay of the proton.
encyclozine.com /Particle_physics   (1734 words)

  
 FACTS AND MYSTERIES IN ELEMENTARY PARTICLE PHYSICS
Not only have you explained the physics of the world of elementary particles to the young aspiring student, but you have made it available to the intelligent layman.
We are introduced to the known particles of the world we live in.
students and researchers in elementary particle physics should seriously consider having this book in their personal library, partly to be able to look at the many pictures and brief biographies of their favorite elementary particle physicists, and partly to learn Veltman's incisive thinking on obscure or unsettled areas in particle physics...
www.worldscibooks.com /physics/5088.html   (961 words)

  
 Particle Physics
You can find out more about Particle Physics in our general introduction and about the groups strategy towards making fundamental measurements and discoveries.
The physics programme of research is conducted at national and international research facilities on 3 continents.
The groups activities are funded by the Particle Physics and Astronomy Research Council (PPARC), the Higher Education Funding Council for England (HEFCE).
hep.ph.liv.ac.uk   (148 words)

  
 [No title]   (Site not responding. Last check: 2007-10-22)
In recent years, we have realized a strong and growing synergism between the physics of short distances and the properties and large- scale structure of the universe.
Speculations abound, but physics is an experimental science, and only with new data will we be able to properly address these problems and uncover whatever new surprises lie ahead.
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)

  
 UCSD Particle Physics (Experiment) Web Site   (Site not responding. Last check: 2007-10-22)
The Department of Physics at the University of California, San Diego invites applications for a faculty position in experimental particle physics at the tenure track assistant professor level, starting November 1, 2006.
The present effort in particle physics experiment includes major involvement in the BaBar, CDF and CMS experiments.
Information about the activities of the particle physics group is available at http://hep.ucsd.edu.
hep.ucsd.edu   (244 words)

  
 Open Directory - Science: Physics: Particle   (Site not responding. Last check: 2007-10-22)
An Introduction to Particle Physics - This site is meant to give the reader a brief introduction into the fascinating world of particle physics.
Particle Physics in the UK - Directories, industry involvement, education.
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.
dmoz.org /Science/Physics/Particle   (474 words)

  
 Theory: SLAC Virtual Visitor Center
The name given to the theory that best incorporates all observations to date in the particle realm is "the Standard Model".
Gravitational interactions have yet to be successfully incorporated into the quantum field theory and are a tiny effect in high energy particle collisions, so are ignored in the Standard Model.
Particle physics theories are written in mathematical language called relativistic quantum field theory.
www2.slac.stanford.edu /vvc/theory.html   (210 words)

  
 Amazon.com: Particle Physics, 2nd Edition: Books: B. R. Martin,G. Shaw,B. R. Martin   (Site not responding. Last check: 2007-10-22)
Particle Physics, Second Edition is a concise and lucid account of the fundamental constituents of matter.
The standard model of particle physics is developed carefully and systematically, without heavy mathematical formalism, to make this stimulating subject accessible to undergraduate students.
Throughout, the emphasis is on the interpretation of experimental data in terms of the basic properties of quarks and leptons, and extensive use is made of symmetry principles and Feynman diagrams, which are introduced early in the book.
www.amazon.com /exec/obidos/tg/detail/-/0471972851?v=glance   (784 words)

  
 Particle Physics Data Grid
Our goals and plans are guided by the immediate and medium-term needs of the physics experiments and by the research and development agenda of the computer science groups.
The leadership of PPDG contributes to international collaboration through work with the EGEE and LCG projects, and the Particle and Nuclear Physics Research Group at the GlobalGridForum, PPDG is collaborating with among others the DOE laboratories and LHC Experiments on the Open Science Grid U.S. based production Grid infrastructure.
The Particle Physics Data Grid collaboration was formed in 1999 because its members were keenly aware of the need for Data Grid services to enable the worldwide distributed computing model of current and future high-energy and nuclear physics experiments.
www.ppdg.net   (596 words)

  
 Online Particle Physics Information - Education Sites
In the area of atomic and particle physics, see Jefferson Lab's All About Atoms slide show and clickable interactive table of elements which enables you to find out an element's properties, history, and uses.
In clear, concise, yet elegant language, this Web site, produced by the Particle Physics and Astronomy Research Council of the UK (PPARC), explains what physicists are looking for with their giant instruments called accelerators and particle detectors.
Please Note: This modest collection of physics art links is provided for high school art, photography and literature teachers who may be interested in the intersections between science and technology and art and literature, or who wish to take an interdisciplinary approach to the curriculum in collaborating with their science department colleagues.
www-spires.slac.stanford.edu /library/pdg/education.html   (3487 words)

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