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

Topic: Belle experiment


Related Topics

In the News (Mon 28 May 12)

  
  Belle experiment - Wikipedia, the free encyclopedia
The Belle Experiment is a particle physics experiment conducted by the Belle Collaboration, an international collaboration of more than 400 physicists and engineers investigating CP-violation effects at the High Energy Accelerator Research Organisation (KEK) in Tsukuba, Ibaraki Prefecture, Japan.
The Belle detector, located at the collision point of the experiment, is a multi-layer particle detector.
The Belle experiment operates at the KEKB accelerator, the world's highest luminosity machine.
en.wikipedia.org /wiki/Belle_experiment   (222 words)

  
 Belle - Wikipedia, the free encyclopedia
Southern Belle (LBSC), a passenger train operated by the London, Brighton and South Coast Railway
Belle, Missouri, a town in the United States
Belle (Peanuts), is character in the Peanuts comic strip
en.wikipedia.org /wiki/Belle   (244 words)

  
 Recent Progress of the Belle Experiment and KEKB Accelerator   (Site not responding. Last check: 2007-10-25)
There the "Belle collaboration," an international team of faculty and student researchers from Universities and laboratories from eleven different countries, operate of the Belle detector, which is tailored to study the particles produced at KEKB.
Belle is a complex assortment of highly sensitive radiation detectors located inside of a large superconducting electromagnet, The device took nearly ten years to design and build.
The Belle discovery was recently confirmed by researchers with the CDF experiment at the Fermi National Accelerator Laboratory in Illinois, home of the Tevatron, the world's largest atom smasher.
www.kek.jp /press/2003/belle4e.html   (566 words)

  
 Hot Items in High Energy Physics
The Belle experiment at KEK has issued a press release announcing the discovery of a new subatomic particle with a mass a little lower than that of a helium nucleus (alpha particle).
Experiments in Japan and the US have reported evidence for subatomic particles containing five quarks (in fact four quarks and an antiquark) which have been given the name "pentaquarks".
However, in an experiment by a team lead by Cronin and Fitch (who obtained the Nobel prize for this discovery) CP violating decays of neutral K mesons were observed for the first time.
www.physics.usyd.edu.au /hienergy/hotnews_archive.html   (1402 words)

  
 Falkiner Belle Collaboration page
Belle is an international collaborative experiment at the KEKB B-factory at Tsukuba, Japan, which began taking data in June 1999.
The experiment investigates small differences between in the decay properties of particles and antiparticles, in order to try to shed some light on the imbalance between matter and anti-matter in the universe, and also to improve our understanding of these interactions.
The latest results from Belle were presented at the major international conferences in high energy physics in 2005.
www.physics.usyd.edu.au /hienergy/belle.html   (353 words)

  
 Mesons violate Bell’s inequality (November 2003) - News - PhysicsWeb
Experiments to test Bell’s inequality involve measuring the properties of pairs of particles that are space-like separated in the sense of special relativity: in other words, there is no time for a light signal to travel between them within the duration of the experiment.
In a typical Bell’s inequality experiment the polarizations of a pair of photons are measured as the relative angle between the axes of polarizers making the measurements is varied.
Bell and others showed that it was possible to distinguish between quantum mechanics and these hidden-variable theories in a certain type of experiment that measure a parameter known as S. Put simply, the local theories predict that S will always be less than two, whereas the quantum prediction is S = 2√2.
physicsweb.org /article/news/7/11/3   (441 words)

  
 20 August 2004 - KEK: Belle experiment steams ahead with CP violation
The two experiments found that the way B mesons decay into particles called J/psi mesons and K^0 mesons is clearly different from the way anti-B mesons go through the same decay.
The first evidence for direct CP violation in B meson decay was reported by the Belle group in January 2004 in the disintegration of the B meson into two pi mesons.
The observation by Belle of direct CP violation in Kpi decay, was foreshadowed by an earlier Belle result on reactions where B mesons were seen to decay into two pi particles.
www.interactions.org /cms/?pid=1014312   (1073 words)

  
 Particle physics - Wikipedia, the free encyclopedia
The nucleus was initially thought to be composed of protons and confined electrons (in order to explain the difference between nuclear charge and mass number), but was later found to be composed of protons and neutrons.
The early 20th century explorations of nuclear physics and quantum physics culminated in proofs of nuclear fission in 1939 by Lise Meitner (based on experiments by Otto Hahn), and nuclear fusion by Hans Bethe in the same year.
It is the home of a number of interesting experiments such as K2K, a neutrino oscillation experiment and Belle, an experiment measuring the CP-symmetry violation in the B-meson.
en.wikipedia.org /wiki/Particle_physics   (2113 words)

  
 Virginia Tech part of group arriving at major physics measurement
The new KEK measurement was obtained from data recorded by the Belle detector over the past two years and was announced at the meeting of the Lepton-Photon Symposium in Rome July 23 by co-spokesperson Stephen Olsen of the University of Hawaii.
The Belle measurement shows a higher variance from zero than the Stanford measurement and is therefore of more interest to theoretical physicists, Piilonen said, because it indicates a higher degree of asymmetry.
The first number is the Belle measurement of the asymmetry, the second number is the statistical uncertainty, and the third is the systematic uncertainty.
www.eurekalert.org /pub_releases/2001-08/vt-vtp083101.php   (842 words)

  
 Nature's flawed mirror (July 2003) - Physics World - PhysicsWeb
For example, the results of experiments do not depend on where the experiments are performed, or on the orientation of the apparatus.
Furthermore, experiments are insensitive to the overall phase of quantum-mechanical wavefunctions - a property known as gauge invariance - which leads to the conservation of electric charge.
However, when the experiment was repeated using antimuons, the positrons (antielectrons) that were produced favoured the same direction as the antimuon polarization (figure 1).
physicsweb.org /articles/world/16/7/8/1   (3480 words)

  
 Lepton Photon 2003: A week of interactions
The experiments have reported differences in one of the decay modes of B-mesons, which are quark-antiquark pairs containing the bottom quark or its antimatter particle.
BELLE has reported a decay path from the B-meson to a particle called phi K (short) that is larger than expected and with opposite sign from what is expected--presenting statistical differences from BABAR results.
The BELLE results would contradict the Standard Model, the theoretical framework of particle physics for more than 30 years; the BABAR results are in agreement with the Standard Model.
www.eurekalert.org /features/doe/2003-09/dnal-lp2020904.php   (1743 words)

  
 Recent Progress of the Belle Experiment and KEKB Accelerator   (Site not responding. Last check: 2007-10-25)
The High Energy Accelerator Research Organization (KEK) announced that the Belle collaboration, an international research team working at the KEKB accelerator, found evidence for a new phenomenon that cannot be explained by the Standard Model of elementary particles.
Studies of these B meson decays play a crucial role in our understanding of the behavior of matter at its most elementary level, notably in investigating the origin of the tiny difference that is known to exist between matter and anti-matter, called CP violation.
The first clear evidence that such CP violation occurs in B meson decays was reported two years ago by the Belle and the BaBar collaborations, the latter working at the Stanford Linear Accelerator Center in California.
www.kek.jp /press/2003/belle3e.html   (667 words)

  
 My Work   (Site not responding. Last check: 2007-10-25)
I am involved in two experiments that examine the properties of the elementary constituents of matter.
I am a spokesperson for the Belle experiment located in Japan, which studies the "beauty" quark.
This is a computer-generated display of the tracks of particles produced when a pair of beauty quarks are produced and decay near the center of the Belle detector.
home.hawaii.rr.com /thestephen/my_work.htm   (113 words)

  
 CERN Courier - Belle experiment finds evide - IOP Publishing - article
The Belle experiment is a collaborative effort of scientists from universities and laboratories in America, Asia, Australia and Europe.
The Belle experiment operates at the U(4S) resonance where each B meson is produced accompanied by an anti-B meson partner and nothing else.
is taken from lattice QCD, the Belle measurement of B → τν gives a tight constraint on charged Higgs masses at high tanβ in extensions of the Standard Model, where tanβ is the ratio of vacuum expectation values.
www.cerncourier.com /main/article/46/5/1   (526 words)

  
 CITY OF BELLE GLADE
Belle Glade is the largest city within the 2,862,000 acre subtropical Everglades in the heartland of Florida.
Originally known as Hillsboro, Belle Glade was incorporated in 1928 with a population of less than 500.
Their prehistoric habitation and burial mounds are located just west of Belle Glade in Chosen which is known by many as the "Indian Mound." These sites were excavated by the Smithsonian Institute during the early 1930s and later by archaeologists from the Florida State Museum in Gainesville.
www.bellegladechamber.com /cityof.htm   (669 words)

  
 CERN Courier - Belle discovers yet more new - IOP Publishing - article
The record performance of the KEK B-factory is currently supplying Belle with about 1 million B Bbar meson pairs per day (CERN Courier April 2005 p5).
Last summer the collaboration reported strong evidence for a mass peak in the spectrum of particles recoiling against a J/Ψ in electron-positron collisions with a similar mass to the Y(3940).
Belle's particle hunters have their work cut out as they try to pin down the identity of the new particles they have already observed, while more data - and opportunities for more discoveries - pour in faster and faster.
www.cerncourier.com /main/article/45/4/4   (288 words)

  
 Belle   (Site not responding. Last check: 2007-10-25)
The Belle experiment studies the decay patterns of the b-quark to search for clues on how our universe is constructed.
The Belle name (B-el-le) and logo (note the "e" and its mirror image making up the "B") symbolize the fact that B mesons are created in collisions of electrons with positrons (= anti-electrons).
The Belle effort at Virginia Tech is supported by a research grant from the Department of Energy (DE-FG05-92ER40709, Task B).
www.phys.vt.edu /research/experiments/belle.html   (135 words)

  
 EPP - Current Projects
With sufficient data collected by the Belle experiment, a measurement of the Unitary Triangle angle (2 will also be possible, another important milestone for the stringent testing of the Standard Model.
This experiment is designed to produce world-record numbers of B mesons for studies of charge-parity violation (CPV), rare decays, and physics beyond the Standard Model (SM) of particle physics.
The Belle experiment has been specifically established to measure these parameters by looking at the decays and decay rates of B mesons and anti-B mesons.
www.ph.unimelb.edu.au /epp/epp/epp_current_projects.html   (1414 words)

  
 Virginia Tech partner in discovery of quark interaction
Virginia Tech is a founding institution in the Belle experiment that studies the properties of the beauty (b) quark at the KEK Laboratory.
The Belle experiment studies the decay patterns of the b-quark to search for clues on how the universe is constructed.
This phenomenon was confirmed by finding 35 events where the B meson decays into either a rho or an omega meson with an accompanying photon, and 30 events where the B meson disintegrates into two K mesons.
www.eurekalert.org /pub_releases/2005-07/vt-vtp070105.php   (590 words)

  
 UH Manoa physicists discover a new sub-atomic particle
The Belle experiment involves the study of charge conjugation parity (CP) violation — the differences between matter and antimatter.
The observation of the Y(3940) is the result of analysis of Belle data by professors Stephen Olsen of the University of Hawai‘i at Manoa and Sookyung Choi of Gyeongsang University in Korea.
The work by Hawai‘i physicists in the Belle experiment is supported in part by the U.S. Department of Energy.
www.hawaii.edu /cgi-bin/uhnews?20050517090948   (432 words)

  
 Debabrata Mohapatra   (Site not responding. Last check: 2007-10-25)
Belle experiment is searching for the CP violation in Bmeson decays.
Belle Collaboration, D. Mohapatra et al., Observation of b-> d gamma decays and determination of Vtd/Vts, hep-ex/050607 [to be published in Phys.
Mohapatra [Belle Collaboration], Radiative penguin decays of B mesons, Nucl.
www.phys.vt.edu /~dmohapat/research.html   (216 words)

  
 Frontiers 2005-Lyle Winton
We have data produced from the actual experiment, from the collisions that are occurring inside the detector.
The Belle experiment is situated on the KEKB accelerator in Japan.
Simulations from experiments like the ATLAS detector have led to some technology transfers, some of which have come up within the astrophysics community, where we are actually using some of the similar codes to simulate cosmic rays and to design telescopes.
www.science.org.au /events/frontiers2005/winton.htm   (3307 words)

  
 Outline of BELLE
The University of Melbourne HEP group is participating in the Belle experiment at the Japanese KEKB asymmetric electron-positron collider, which generates huge amounts of data in search of evidence such as CP violations and new sub-atomic particles.
There are two types of experiments conducted by the HEP group: a simulation and an analysis.
The data files generated by the BELLE experiment are terabyte in size, leading to a petabyte dataset.
www.cs.rmit.edu.au /agents/HEPgrid/BELLE.html   (669 words)

  
 UH Physicists Part of International Team Presenting Indication of New Physics from...
The High Energy Accelerator Research Organization (KEK) recently announced that the Belle collaboration, an international research team working at the KEKB accelerator, found evidence for a new phenomenon that cannot be explained by the Standard Model of elementary particles.
The Belle collaboration is an international research team, which includes a number of UH Manoa researchers and graduate students, working at the KEKB accelerator located at the Japanese High Energy Accelerator Research Organization (KEK) in Tsukuba, Japan.
The Belle collaboration is composed of 350 researchers from 55 institutions in 11 countries.
www.hawaii.edu /cgi-bin/uhnews?20030819170808   (575 words)

  
 Univ. of Nova Gorica Belle Home Page   (Site not responding. Last check: 2007-10-25)
The goal of the Belle experiment is the measurement of CP violation in the decays of the B mesons.
Research activities of the group members include construction of Belle radiation monitoring and abort interlock system and readout, design of the interaction region beam pipe.
Latest contributions are R&D on a pixel vertex detector upgrade for Super Belle silicon vertex detector (SVD), data analysis and experiment operating support.
www.p-ng.si /~sstanic/belle   (92 words)

  
 DZero - For the Public - Plain English Summaries
Recently, the "BELLE" experiment in Japan discovered a new particle they named the X(3872).
experiment has compared a number of properties of the X(3872) to a well-known particle containing a charm quark and charm anti-quark.
experiment is working toward a definitive answer to this question.
www-d0.fnal.gov /Run2Physics/WWW/results/final/B/B04A/B04A.htm   (1128 words)

  
 SC|05 - Schedule Event Details
The Belle experiment operates at the KEKB accelerator, a high luminosity asymmetric energy e+ e- machine.
The Belle collaboration studies CP violation in decays of B meson.
In the challenge, we will demonstrate high-performance Belle data analysis using StorCloud facilities and the MegaProto low power, high density cluster units, the detail of the latter to be presented in the technical paper session at SC05.
sc05.supercomputing.org /schedule/event_detail.php?evid=5300   (209 words)

  
 Ralf Seidl..
At the Belle experiment a lot of measurements close to the heart of QCD can be performed.
At the PHENIX experiment single spin asymmetries of neutral pions from run 5 are being analyzed.
While working for the HERMES experiment the analysis of azimuthal asymmetries in semi-inclusive pion and kaon production of a transversely polarized proton target and a longitudinally polarized deuteron target have been performed.
www.npl.uiuc.edu /~rseidl   (408 words)

Try your search on: Qwika (all wikis)

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