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Keyword: standardmodel

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  • Experiment Confirms a Crucial Property of Electrons, Unfortunately

    10/11/2017 7:35:44 PM PDT · by MtnClimber · 36 replies
    Gizmodo ^ | 10 Oct, 2017 | Ryan F. Mandelbaum
    When it comes to physics, fewer things are more exciting than proving something wrong. Proving theories wrong has led to entirely new fields of study. The fruits that come from wrongness can be so rewarding that scientists devote a considerable amount of time to probing well-known theories, hoping to find a crack. But a team of JILA physicists at the National Institute of Standards and Technology and the University of Colorado, Boulder is reporting that, once again, the theory was right—specifically, the Standard Model of particle physics and its prediction of just how spherical the distribution of an electron’s charge...
  • Physicists Discover a Possible Break in the Standard Model of Physics

    06/18/2017 5:27:47 PM PDT · by jdege · 47 replies
    Futurism ^ | une 10, 2017 | Dom Galeon
    Physicists Discover a Possible Break in the Standard Model of PhysicsIn order to make sense of the physical world, scientists have worked hard to discover theories and principles that govern the physics of matter. This is what’s called the Standard Model of Physics, which includes all the laws and principles concerning matter in all its forms and sizes. Bascially, the Standard Model applies to even particle physics. Or so it should. Scientists from the University of California at Santa Barbara (USCB) and colleagues from various other institutions have recently discovered that there might be a break in the application of...
  • CERN Declares War On The Standard Model

    04/20/2017 10:52:44 AM PDT · by BenLurkin · 38 replies
    Universe Today ^ | Matt Williams
    Ever since the discovery of the Higgs Boson in 2012, the Large Hadron Collider has been dedicated to searching for the existence of physics that go beyond the Standard Model. To this end, the Large Hardon Collider beauty experiment (LHCb) was established in 2016, specifically for the purpose of exploring what happened after the Big Bang that allowed matter to survive and create the Universe as we know it. Since that time, the LHCb has been doing some rather amazing things. This includes discovering five new particles, uncovering evidence of a new manifestation of matter-antimatter asymmetry, and (most recently) discovering...
  • Potential New Particle Shows Up at the LHC, Thrilling and Confounding Physicists

    12/20/2015 12:36:01 PM PST · by 2ndDivisionVet · 28 replies
    Scientific American ^ | December 16, 2015 | Clara Moskowitz
    The gigantic accelerator in Europe has produced hints of an exotic particle that defies the known laws of physics. A little wiggle on a graph, representing just a handful of particles, has set the world of physics abuzz. Scientists at the Large Hadron Collider (LHC) in Switzerland, the largest particle accelerator on Earth, reported yesterday that their machine might have produced a brand new particle not included in the established laws of particle physics known as the Standard Model. Their results, based on the data collected from April to November after the LHC began colliding protons at nearly twice the...
  • Long-Sought Exotic Particle of Pure Force Detected --"Key Prediction of the Standard Model"

    10/14/2015 12:44:29 PM PDT · by SunkenCiv · 18 replies
    The Daily Galaxy ^ | October 13, 2015 | unattributed
    Scientists at TU Wien (Vienna) have calculated that the meson f0(1710) could be a very special particle -- the long-sought-after glueball, a particle composed of pure force. The prediction that glueballs exist is one of the most important of the Standard Model of particle physics that has not yet been confirmed experimentally. For decades, scientists have been looking for so-called "glueballs". Now it seems they have been found at last. A glueball is an exotic particle, made up entirely of gluons -- the "sticky" particles that keep nuclear particles together. Glueballs are unstable and can only be detected indirectly, by...
  • Kajita becomes Nobel physics prize co-winner

    10/06/2015 5:20:48 AM PDT · by chajin · 9 replies
    NHK (Japan Broadcasting Company) ^ | October 6, 2015 | NHK
    A Japanese scientist has won this year's Nobel Prize in Physics. Takaaki Kajita proved that neutrinos have mass. The neutrino is an elementary particle consisting of matter. Kajita observed neutrinos at a facility deep underground. He was part of a team that detected that some of the particles change to different types of neutrino. That proved neutrinos have mass. The discoveries were revealed at an international conference in 1998. His work surprised researchers all around the world because it disproved the established theory that neutrinos do not have mass. Kajita is the 24th Nobel Prize winner born in Japan. And...
  • The Vast and the Tiny (John Derbyshire)

    05/31/2013 11:54:04 AM PDT · by neverdem · 3 replies
    American Spectator ^ | May 2013 | John Derbyshire
    On galaxies and bosons, stars and quarks. In physics, truth does not always equal beauty. The Milky Way: An Insider’s Guide By William H. Waller (Princeton University Press, 296 pages, $29.95) A Palette of Particles By Jeremy Bernstein (Belknap Press of Harvard University, 224 pages, $18.95) THE BRITISH PHILOSOPHER J.L. Austin coined the handy phrase “medium-sized dry goods” to describe the world of everyday phenomena that the human nervous system is best suited to cope with, phenomena ranging in size from a grain of dust to a landscape. Within that range our senses and cognition are at home. All our...
  • Higgs Boson Positively Identified

    03/15/2013 12:12:53 AM PDT · by neverdem · 30 replies
    ScienceNOW ^ | 14 March 2013 | Adrian Cho
    Enlarge Image Plainly. An event display shows a Higgs candidate decaying to four electrons in the ATLAS detector. New measurements confirm that the Higgs is a Higgs. Credit: ATLAS Collaboration/CERN Eight months ago, physicists working with the world's biggest atom smasher—Europe's Large Hadron Collider (LHC)—created a sensation when they reported that they had discovered a particle that appeared to be the long-sought Higgs boson, the last missing piece in their standard model of particles and forces. Today, those researchers reported that the particle does indeed have the basic predicted properties of the standard model Higgs boson, clinching the identification....
  • As Supersymmetry Fails Tests, Physicists Seek New Ideas

    11/29/2012 3:10:46 PM PST · by neverdem · 32 replies
    Simons Science News ^ | November 20, 2012 | Natalie Wolchover
    No hints of “new physics” beyond the predictions of the Standard Model have turned up in experiments at the Large Hadron Collider, a 17-mile circular tunnel at CERN Laboratory in Switzerland that slams protons together at high energies. (Photo: CERN) As a young theorist in Moscow in 1982, Mikhail Shifman became enthralled with an elegant new theory called supersymmetry that attempted to incorporate the known elementary particles into a more complete inventory of the universe.“My papers from that time really radiate enthusiasm,” said Shifman, now a 63-year-old professor at the University of Minnesota. Over the decades, he and thousands of...
  • At Long Last, Physicists Discover Famed Higgs Boson

    07/12/2012 12:46:07 PM PDT · by neverdem · 35 replies
    ScienceNOW ^ | 4 July 2012 | Adrian Cho
    Enlarge Image Twin peaks. Both the CMS (top) and the ATLAS (bottom) detectors see evidence of the Higgs boson decaying into a pair of photons in the form of a peak in a so-called mass plot. The agreement of the two peaks and other data clinch the discovery of the Higgs. Credit: CMS and ATLAS collaborations MEYRIN, SWITZERLAND—The long wait is over. Today, physicists working with the world's largest atom smasher here at the European particle physics laboratory, CERN, reported that they have discovered the long-sought Higgs boson—the last missing bit in their standard model of fundamental particles and...
  • Physics: Proton radius smaller than believed, European scientists say

    07/07/2010 9:06:34 PM PDT · by smokingfrog · 118 replies · 3+ views
    LA Times ^ | July 7, 2010 | Thomas H. Maugh II
    Sophisticated measurements from experiments indicate the radius is 4% smaller than thought. If true, the finding could have major ramifications for the standard model used in modern physics. Physicists might have to rethink what they know about, well, everything. European researchers dropped a potential bombshell on their colleagues around the world Wednesday by reporting that sophisticated new measurements indicate the radius of the proton is 4% smaller than previously believed. In a world where measurements out to a dozen or more decimal places are routine, a 4% difference in this subatomic particle — found in every atom's nucleus — is...
  • Fermilab Experiment Hints At Multiple Higgs Particles

    06/15/2010 9:41:08 PM PDT · by dila813 · 40 replies · 775+ views
    Slashdot ^ | Today | so-many-particles-mister-fermi dept.
    "Recent results from the Dzero experiment at the Tevatron particle accelerator suggest that those looking for a single Higgs boson particle should be looking for five particles, and the data gathered may point to new laws beyond the Standard Model. 'The DZero results showed much more significant "asymmetry" of matter and anti-matter — beyond what could be explained by the Standard Model. Bogdan Dobrescu, Adam Martin and Patrick J Fox from Fermilab say this large asymmetry effect can be accounted for by the existence of multiple Higgs bosons. They say the data point to five Higgs bosons with similar masses...
  • Physicists get closer to finding the 'God Particle'

    03/13/2009 8:04:31 PM PDT · by NormsRevenge · 77 replies · 2,200+ views
    AFP on Yahoo ^ | 3/13/09 | AFP
    CHICAGO (AFP) – Physicists have come closer to finding the elusive "God Particle," which they hope could one day explain why particles have mass, the US Department of Energy's Fermi National Accelerator Laboratory announced Friday. Researchers at the Fermilab have managed to shrink the territory where the elusive Higgs Boson particle is expected to be found -- a discovery placing the American research institute ahead of its European rival in the race to discover one of the biggest prizes in physics. Physicists have long puzzled over how particles acquire mass. In 1964, a British physicist, Peter Higgs, came up with...
  • Standard model gets right answer for proton, neutron masses

    11/22/2008 10:22:32 PM PST · by neverdem · 20 replies · 1,653+ views
    Science News ^ | November 20th, 2008 | Ron Cowen
    Correct calculation strengthens theory of quark-gluon interactions in nuclear particles When it comes to weighty matters, quarks and gluons rule the universe, a new study confirms. One of the largest computational efforts to calculate the masses of protons and neutrons shows that the standard model of particle physics predicts those masses with an uncertainty of less than 4 percent. Christian Hoelbling, affiliated with the Bergische Universtät Wuppertal in Germany, the Eötvös University in Budapest and the CNRS in Marseille, France, and his colleagues report their findings in the Nov. 21 Science. Nearly all the mass of ordinary matter consists of...
  • Physicists capture image of elusive neutrinos

    11/06/2007 8:58:29 AM PST · by SunkenCiv · 9 replies · 88+ views
    Cosmos Magazine ^ | Wednesday, October 24, 2007 | Agence France-Presse
    European physicists have sent a neutrino on a 730-kilometre trip under the Earth's crust and taken a snapshot of the instant it slammed into lab detectors... In 2006, CERN started beaming neutrinos from its accelerator complex near Geneva, and have so far detected several hundred impacts in San Grasso. But the scientists have now taken the venture a step forward by starting to fill the San Grasso detector with small film plates which measure with high accuracy the cascade of particles that are produced when a neutrino impacts. These plates, called bricks, are each made of a sandwich of lead...
  • No sign of the Higgs boson

    04/10/2007 8:48:56 AM PDT · by SunkenCiv · 7 replies · 422+ views
    New Scientist ^ | December 5, 2001 (note the year) | Eugenie Samuel
    From the masses and interactions of other particles that we know exist, physicists calculated that the Higgs is most likely to have a mass (or energy) of around 80 gigaelectronvolts (GeV). If particle accelerators smash particles together at that energy or higher, it should be possible to make one. This is what members of the Electroweak Working Group at CERN were doing for the 5 years until LEP (the Large Electron Positron Collider) closed down last year. Since then they've been sifting through the data they gathered--and found nothing. They rule out most possible masses for the Higgs, including the...
  • Light shed on mysterious particle

    03/31/2006 6:04:35 AM PST · by The_Victor · 83 replies · 1,321+ views
    BBC ^ | 3/31/2006 | Rebecca Morelle
    Physicists have confirmed that neutrinos, which are thought to have played a key role during the creation of the Universe, have mass. This is the first major finding of the US-based Main Injector Neutrino Oscillation Search (Minos) experiment. The findings suggest that the Standard Model, which describes how the building blocks of the Universe behave and interact, needs a revision. Neutrinos are believed to be vital to our understanding of the Universe. But scientists know frustratingly little about these fundamental particles. The findings build on work carried out by Japanese physicists. Different 'flavours' Neutrinos are sometimes described as "ghost particles"...
  • 'God particle' may have been seen

    03/11/2004 4:45:23 AM PST · by Momaw Nadon · 123 replies · 732+ views
    BBC News Online ^ | Wednesday, 10 March, 2004 | By Paul Rincon
    A scientist says one of the most sought after particles in physics - the Higgs boson - may have been found, but the evidence is still relatively weak. Peter Renton, of the University of Oxford, says the particle may have been detected by researchers at an atom-smashing facility in Switzerland. The Higgs boson explains why all other particles have mass and is fundamental to a complete understanding of matter. Dr Renton's assessment of the Higgs hunt is published in Nature magazine. "There's certainly evidence for something, whether it's the Higgs boson is questionable," Dr Renton, a particle physicist at Oxford,...