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Topic: Event (particle physics)

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Particle Physics Department at RAL 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). 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. hepwww.rl.ac.uk /pub/ppd.html   (298 words)

Position Sensitive Detectors in Particle Physics Particle Physics continues to set exacting demands on detector technology and readout: in speed, position resolution, double hit resolution, material thickness, radiation hardness, data flow, data compression and event triggering. Particle Physics 'experiments' are capital facilities that are like astronomical observatories, in that a range of studies may be undertaken over a period of years using the same kit of parts. A detector which is sensitive to minimum-ionising particles is vulnerable to streamer discharges caused by heavily ionising particles such as nuclear fragments which are always present at a low rate in reactions involving hadrons. ppewww.ph.gla.ac.uk /preprints/1999/17/SaxonPSD5web.html8   (298 words)

Physics Event Abstract WRNPPC '04 41st Western Regional Nuclear & Particle Physics Conference February 13 -15, 2004 Chateau Lake Louise, Lake Louise, Alberta Full information at: http://www.phys.uvic.ca/wrnppc-2004/ Synopsis: The Western Regional Nuclear & Particle Physics Conference (WRNPPC) will be held on February 13-15, 2004 at the Fairmont Chateau Lake Louise in Lake Louise. As before, the conference will provide a friendly setting for researchers, including graduate students, to present their work in nuclear or particle physics. It is organized this year by the University of Victoria. www.phys.ualberta.ca /events/abstract.php?op=abstract&record_num=481   (298 words)

Rietvlei Gazette Page11 New Cosmology The proximity of our practical horizon to our event horizon, or to our particle horizon, if such exist, can only be theoretically estimated. Particle and event horizons are personal horizons, not physical boundaries. Cosmology and particle physics, a subject that has developed only over the last forty years, are now closely entangled topics. www.rietvleikzn.co.za /part3.htm   (298 words)

1Up Science > Links Directory > Physics: Particle: Software Mathematica package for algebraic calculations in elementary particle physics, focusing on Feynman diagram calculations. 1Up Science : Links Directory : Physics : Particle : Software 1Up Science > Links Directory > Physics: Particle: Software www.1upscience.com /links/particle-software.html   (298 words)

Virtual particle and event horizon - Physics Help and Math Help - Physics Forums The rates of absorption of particles and antiparticles would be equal, it's just a random happenstance which one has the component of momentum toward the horizon. This makes for the release of the particle ( wich is then sort-of materialized out of "nothing") into space and for the blackhole loosing some mass from the absorbtion of anti-matter particle. But if the surviving particle is an antiparticle, it wil quickly annihilate with all the regular matter that accumulates near a black hole, producing photons. www.physicsforums.com /showthread.php?goto=lastpost&t=36902   (298 words)

Fusing physics with medicine to fight cancer The event, organised by the Particle Physics and Astronomy Research Council (PPARC), showcased a number of technologies originally developed for particle physics experiments that have been successfully applied to the medical industry - particularly in relation to the diagnosis and treatment of cancer. The Particle Physics and Astronomy Research Council (PPARC) is one of eight government-funded Research Councils, sponsoring some £300m of research each year. The novel positron camera (PETTRA) is based on a gas filled ionisation chamber as developed for particle physics at CERN by nobel prize winner, George Charpak. www.medicalnewstoday.com /medicalnews.php?newsid=23549&nfid=mnf   (1769 words)

Time [Internet Encyclopedia of Philosophy] Feynman diagrams in particle physics were described by Feynman himself as illustrating how a particle's moving forward in time is actually its antiparticle moving backward in time. Ascending another level up the hierarchy of multiverses, if there are different possible values for the physical constants and for the kinds of elementary particles in our universe, then there must be parallel universes far from us which have all those possible values. As a clock falls toward a black hole, time slows on approach to the event horizon, and it completely stops at the horizon (not just at the center of the hole)--relative to time on a clock that remains safely back on earth. www.iep.utm.edu /t/time.htm   (1769 words)

Physics News Update Number 265 - HAS A SUPERSYMMETRIC PARTICLE BEEN PRODUCED? Just as all particles are believed to have antiparticle counterparts, so all known fermions (particles such as quarks and leptons with a half-integral intrinsic spin) are believed by some theorists to have hypothetical boson (particles with integral spins) counterparts, and vice versa. This "supersymmetry" hypothesis is part of an effort to unify all of the known particles and forces into a single theoretical framework. Kane and his colleagues argue that if their assessment is correct, there might be more as- yet-unrecognized supersymmetry candidate events in the present CDF data sample, and that such events may turn up in scattering experiments at CERN's LEP collider, running at 160 GeV this coming summer. www.aip.org /enews/physnews/1996/split/pnu265-1.htm   (1769 words)

Anne Green's Research Page Confirmation of the existence of dark matter requires its direct detection, furthermore since the majority of the dark matter is thought to be non-baryonic, its detection would also constrain models of particle physics beyond the standard model. Weakly Interacting Massive Particle (WIMP) direct detection experiments have just reached the sensitivity required to probe the interesting range of mass-cross section parameter space, where relic neutralinos, or indeed any stable weakly interacting particle, could constitute a significant fraction of the Galactic dark matter. Event rate calculations and detection strategies are usually based on the assumption of a standard spherical, isotropic, Maxwellian halo model, however this is likely to be a poor approximation to the real structure of the Milky Way halo. astronomy.sussex.ac.uk /~amg/newresearch.html   (1769 words)

Origins: CERN, the world's largest particle accelerator We talked to the ATHENA team about this groundbreaking, historic event in particle physics and learned what's next. You'll need the Real Player to watch Webcasts. Cold anti-hydrogen atoms have been made, stored, and detected for the first time at ATHENA! www.exploratorium.edu /origins/cern   (148 words)

Approaching Extinction level Event Page 2 According to Dr. Kaku, quantum physics is the study and application of physics at the atomic particle level of Creation. Not only did the Mayans believe that they could measure time, but they believed that they could predict events that would take place in time. However, between the human and environmental carnage of global warfare, industrial socialization, and rampant over-population, we, as a species, seem to be hell-bent on altering and accelerating these cataclysmic changes. www.uforia-research.com /level_2.htm   (2871 words)

2.5 The astroparticle connection By particle physics standards these events are not rare; an estimate of the probability of producing a Centauro in an interaction of one PeV or above is about 1%. Events have been reported wherein bundles of muons are observed with very small lateral separation, as if produced in a process with very small relative transverse momenta (as in the Chiron miniclusters). Events are also often observed which are characterized by a dense blackening of the emulsion over a small area (due to an electromagnetic cascade which had begun development in the air above the chamber) containing within it several hadronic cores, again spaced very closely together. felix.web.cern.ch /FELIX/Loi/HTML/C2a/node2.html   (2871 words)

APS - 2005 APS April Meeting PostDeadline - Event - EPP2010: Elementary Particle Physics in the 21st Century In the 21st century, elementary particle physics is poised to address some of the most basic questions in science. To address these questions, the National Research Council has formed a committee, EPP2010, which is charged to ``Identify, articulate, and prioritize the scientfic questions and opportunities that define elementary particle physics,'' and ``Recommend a 15-year implementation plan with realistic, ordered priorities to realize these opportunities.'' The activities and progress of this committee will be discussed. Abstract: N1.00002 : EPP2010: Elementary Particle Physics in the 21st Century meetings.aps.org /Meeting/APR05/Event/29965   (134 words)

Science: Physics: Modern: cosmology - Open Site Today the study of the underlying structure of matter, particle physics, is intimately tied up with cosmology - the structure of the universe, theorists argue, is the result of events in the first instants of time. Reflect upon the multitude of bodily and mental events taking place in the same brief time, simultaneously in every one of us and so you will not be surprised that many more events, or rather all things that come to pass, exist simultaneously in the one and entire unity, which we call the Universe. Since he rejected a supernatural origin of the universe, he tried to argue that, in an infinite amount of time, extremely improbable events do occur, such as the spontaneous organisation of a universe, or a large section of it, from a prior state of equilibrium. open-site.org /Science/Physics/Modern/cosmology   (4754 words)

(meteorobs) DELAYED Excerpts from "CCNet 100/2001 - 11 September 2001" At the present time there is strong experimental/observational evidence supporting the first three of these predictions, while the fourth one is not tested yet because the Higgs boson, predicted in the standard model of particle physics, is yet to be found. The aim of these analyses is to deduce important characteristics of the Tunguska event and to refine, verifying their accuracy, the mathematical models concerning the impacts with atmosphere of cosmic bodies having different composition and dimensions. Events called coronal mass ejections fling 10 million megatons of solar material into space, and some of these are directed at Earth. www.meteorobs.org /maillist/msg22827.html   (4754 words)

Science@Berkeley Lab: The International Linear Collider A possible model for the organization of the international effort is the 20-member-nation CERN, whose official name is the European Organization for Nuclear Research — but whose acronym is more commonly applied to the organization's laboratory for particle physics near Geneva, an accelerator 27 kilometers in diameter that lies in both Switzerland and France. The LHC and the ILC are both designed to complete the map of Standard Model physics and to discover and explore the new physics that lies beyond its borders. But the real interactions in a powerful hadron collider are between quarks, the constituents of the hadrons, and the energy of the quark-quark collisions varies from event to event. www.lbl.gov /Science-Articles/Archive/sabl/2005/February/ILC.html   (1528 words)

Hawking radiation questions According to the physicist observing the event horizon by hanging from a rope by his thumbs, the black hole has emitted a particle through the event horizon. This means that the total area of black holes can and will decrease in time, and black holes can decay, contrary to the classical prediction using the Einstein equations and neglecting quantum physics. The picture that emerged from all of these studies is that if a physicist were tossed into a black hole, he wouldn't see anything special happen at the event horizon. superstringtheory.com /blackh/blackh3.html   (621 words)

PPARC starts to identify its priorities (May 2000) - News - PhysicsWeb At an event to launch the council's long-term science review earlier this week, chief executive Ian Halliday admitted that "PPARC will have a pretty rough year." The priorities have been identified by four panels that covered particle physics, particle astrophysics, astronomy and solar system science. Astronomers and particle physicists in the UK have presented their funding agency, the Particle Physics and Astronomy Research Council (PPARC), with a long - and expensive - list of priorities for the next 10 to 20 years. The particle physics panel identified three projects related to the Large Hadron Collider - a 14 TeV proton-proton collider that is due to start in 2005 at CERN - as top priority. physicsweb.org /articles/news/4/5/12   (372 words)

Mathematical Breakthroughs Establish God's Extra-Dimensional Might It is the only theory that self-consistently explains all the known properties of the known (100+) fundamental particles, all the properties and principles of quantum mechanics, all the properties and principles of both special and general relativity, the operation of all four forces of physics, and all the known details of the creation event. But supersymmetry also predicts that for every fundamental particle of matter known as a fermion there must exist a wavelike particle known as a boson that mediates the fundamental forces of physics. Since 1971, accelerator experiments have given us ample proof that two of the forces of physics, electromagnetism and the weak nuclear force, are unifiable, and at least partial proof that the strong nuclear force is unifiable with these other two. mypage.direct.ca /g/gcramer/dimensional.html   (3082 words)

[7.0] Starflight Propulsion According to a rule quantum physics known as "wave-particle duality", a particle can be mathematically described as a "wavepacket" function that gives the probability of the detection of the particle at various locations in space. If confronted with a thin barrier, the wavepacket can extend through the barrier, meaning the particle has a certain probability of being detected beyond that barrier even though it shouldn't be there by the rules of classical physics. However, this only really means that the tunneling event has modified the wavepacket that describes the photon, shifting the wavepacket forward. www.vectorsite.net /tarokt7.html   (3082 words)

Talks given : Bedanga Mohanty Event-by-event fluctuation in photon and charged particle multiplicity and produced transverse energy in 158.A GeV Pb+Pb Collisions Physics group, Variable Energy Cyclotron Centre, Kolkata, India, November 20 2003. Physics group, Variable Energy Cyclotron Centre, Kolkata, India, March 5 2003. bedanga.home.cern.ch /bedanga/talks.html   (3082 words)

Graduate Level Course Notes and Tutorial Papers Related to General Relativity New properties of Cauchy and event horizons, by Robert Budzynski (Physics, Univ. of Warsaw), Witold Kondracki and Andrzej Krolak (Institute of Mathematics, Polish Academy of Sciences) discusses the state of our knowledge concerning the smoothness properties of Cauchy and event horizons. This paper appeared in print in Proceedings of the Lake Louise Winter Institute, Particle Physics and Cosmology, Feb. Appeared in Proceedings of Princeton's 250th Anniversary Conference on Critical Problems in Physics (October 31-November 2, 1996), Princeton University Press, 1997. www.math.ucr.edu /home/baez/RelWWW/grad.html   (3082 words)

NOVA The Elegant Universe Smashing Pictures PBS The shape of this event resembles the Greek letter Psi and was jokingly offered as proof that the particle knew its name. The standard model of particle physics predicts that early in the history of the universe, before the electroweak force split into the electromagnetic and weak forces, all fundamental matter particles (quarks and leptons) were exactly massless. This theory predicted that the quarks are bound together by a strong force that is carried by a new massless particle called the gluon. www.pbs.org /wgbh/nova/elegant/smas-nf.html   (3082 words)

North Central College - Fermilab Director Michael Witherell to address Commencement June 11 Before becoming Fermilab Director, Dr. Witherell chaired several committees charged with setting policy for particle physics, including the High-Energy Physics Advisory Panel, the Stanford Linear Accelerator Center Scientific Policy Committee, and the Fermilab Physics Advisory Committee. He earned his Ph.D. from the University of Wisconsin in 1973 and pursued an academic career conducting experiments at every major particle physics laboratory in the country, including Fermilab. The event is free and open to the public. www.noctrl.edu /x12924.xml   (483 words)

Bell's Theorem: Physics Its converse, locality, is the principle that an event which happens at one place can't instantaneously affect an event someplace else. Specifically they showed that according to the theory I could put a particle in a measuring device at one location and, simply by doing that, instantly influence another particle arbitrarily far away. It seems that once you accept locality, the fact that the two detectors always give the same result when pointing in the same direction forces you to accept that the electrons have a fixed set of properties ("instruction sets") as soon as they leave the source (i.e. www.ncsu.edu /felder-public/kenny/papers/bell.html   (7601 words)

Neutral Density Filter in TutorGig Encyclopedia In physics, a neutral elementary particle particle or object has zero electric charge. Neutral monism is the philosophy philosophical view that mental event s and physical event s can both be reduction philosophy reduced to aspects of some neutral substance, which considered by itself is neither.. Neutral density ND filters have a constant attenuation across the range of visible wavelengths.. www.tutorgig.com /es/Neutral+Density+Filter   (7601 words)

Postmodern Deconstruction Of Newtonian Science: A Physical-to-social Transposition Of Causality Newtonian mechanism in classical physics and the Copenhagen interpretation of quantum theory) while effectively denying any place (in hard-core science) for others with equal experimental validity (for example, David Bohm’s theory of quantum force in which particle causality is essentially subjectivist and agent-causal). This deconstruction of ‘Newtonian text,’ which demonstrates that the presumed causality of external forces in classical physics indeed is a social construct (as postmodern sociology claims all theory to be), refutes the presupposition of natural science about the objectivist foundations of modern scientific discourse. And all of this is a consequence of the transposition of Newtonian mechanics, from the conventional physico-chemical ‘event causality’ of natural science into an equivalent physico-social ‘agent causality’ for the social sciences. theoryandscience.icaap.org /content/vol002.001/05zaman.html   (7601 words)

BESS - Information Page BESS also searches for antihelium in the cosmic radiation, the detection of which would have profound significance for both cosmology and particle physics. Finally, BESS makes precise measurements of the light elements in the cosmic radiation, data that is important both for understanding the physics of cosmic ray transport and to contribute to atmospheric neutrino flux calculations. The extended data-taking time of long duration flights, the increased event efficiency of the BESS-Polar configuration and the low geomagnetic cutoff should together allow an improvement factor of more than 20 over existing low-energy antiproton data. universe.gsfc.nasa.gov /astroparticles/programs/bess/BESS.html   (698 words)

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