5 Discoveries Made by the Large Hadron Collider (So Far)


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Signs of New Physics After All ... or Not
Six hundred million particle collisions per second can generate a lot of data and, consequently, analysis. It's probably safe to say that LHC data will yield many more surprises. Fabrice Coffrini/AFP/Getty Images

As illogical as it might sound, many physicists hoped that the LHC would poke a few holes in the standard model. The framework has problems, after all, and maybe an earthshaking discovery or two would confirm supersymmetry, or at least point toward new avenues of research. As we mentioned, though, the LHC has dealt repeated blows to exotic physics while reconfirming the standard model at every turn. Granted, the results are not all in (there's an awful lot of data to analyze), and the LHC has yet to hit its full energy of 14 tera-electron volts (TeV). Nevertheless, chances don't look good for making the standard model look bad.

Or maybe they do, if a 2013 report on B-meson decay is any indication. It shows B-mesons decaying into a K-meson (aka a kaon) and two muons (particles similar to electrons), which wouldn't raise any eyebrows, except that the decay followed a pattern not predicted by the standard model. Unfortunately, the study currently falls below the dancing-in-our-lab-coats threshold. Still, it's high enough to raise hopes, and analysis of additional data could inch it from the red zone to the end zone. If so, the odd pattern of decay could offer the first glimpse of the new physics so many are looking for [sources: Johnston; O'Neill].

Author's Note: 5 Discoveries Made By the Large Hadron Collider

Following the completion of the LHC, some wondered what it would mean for physics if the Higgs boson failed to show up. It wasn't just the massive atom-smasher's primary raison d'être; it was a sort of lynchpin for the standard model.

Now there's a bigger problem, and it involves the cosmic background radiation measurements made by the second generation of the Background Imaging of Cosmic Extragalactic Polarization (BICEP2). If BICEP2's observations prove correct, then the Higgs field should have been energetic enough during the Big Bang to cause an immediate Big Crunch. In other words, if both ideas hold true, then we shouldn't be here to argue about why they can't possibly both be true.

Related Articles

Sources

  • CERN. "Supersymmetry." (July 22, 2014) http://home.web.cern.ch/about/physics/supersymmetry
  • CERN. "The Origins of the Brout-Englert-Higgs Mechanism." (July 24, 2014) http://home.web.cern.ch/topics/higgs-boson/origins-brout-englert-higgs-mechanism
  • CERN. "The Standard Model." (July 22, 2014) http://home.web.cern.ch/about/physics/standard-model
  • CERN. "Heavy Ions and Quark-Gluon Plasma." (July 24, 2014) http://home.web.cern.ch/about/physics/heavy-ions-and-quark-gluon-plasma
  • Das, Saswato. "How the Higgs Boson Might Spell Doom for the Universe." Scientific American. March 26, 2013. (July 24, 2014) http://www.scientificamerican.com/article/how-the-higgs-boson-might-spell-doom-for-the-universe/
  • Diep, Francie. "'Indisputable' Proof of a New Four-Quark Particle." Popular Science. April10, 2014. (July 24, 2014) http://www.popsci.com/article/science/indisputable-proof-new-four-quark-particle
  • Encyclopaedia Britannica. "Standard Model." (July 22, 2014) http://www.britannica.com/EBchecked/topic/562968/standard-model
  • Grant, Andrew. "Hard Times for Theorists in a Post-Higgs World." Science News. June 13, 2013. (July 22, 2014) https://www.sciencenews.org/article/hard-times-theorists-post-higgs-world
  • Grant, Andrew. "Exotic Particle Packs a Foursome of Quarks." Science News. April 11, 2014. (July 15, 2014) https://www.sciencenews.org/article/exotic-particle-packs-foursome-quarks
  • Grant, Andrew. "LHC Sees Odd Behavior in Superhot Particle Soup." Science News. Dec. 5, 2012. (July 22, 2014) https://www.sciencenews.org/article/lhc-sees-odd-behavior-superhot-particle-soup
  • Johnston, Hamish. "Has LHCb Spotted Physics Beyond the Standard Model?" Physics.org. Aug. 2, 2013. http://physicsworld.com/cws/article/news/2013/aug/02/has-lhcb-spotted-physics-beyond-the-standard-model
  • Nobel Prize. "The Nobel Prize in Physics 2013." (July 22, 2014) http://www.nobelprize.org/nobel_prizes/physics/laureates/2013/
  • O'Luanaigh, Cian. "LHCb confirms existence of exotic hadrons." CERN. April 9, 2014. (July 30, 2014) http://home.web.cern.ch/about/updates/2014/04/lhcb-confirms-existence-exotic-hadrons
  • O'Neill, Ian. "Hints of New Physics Detected in the LHC?" Discovery News. Aug. 2, 2013. (July 22, 2014) http://news.discovery.com/space/hints-of-new-physics-detected-in-the-lhc-130802.htm
  • Oxford Dictionary of Science. "Elementary Particles" Isaacs, Alan, John Daintith and Elizabeth Martin, eds. Oxford University Press. 4th edition. 2003.
  • Roland, Christof and Matthew Nguyen. "Quark Matter 2014: News from CMS." CERN Courier. May 22, 2014. (July 22, 2014) http://cms.web.cern.ch/news/quark-matter-2014-news-cms
  • Siegfried, Tom. "It's Almost Time to Get to Know the Higgs Boson Better." Science News. June 23, 2014. (July 15, 2014) https://www.sciencenews.org/blog/context/its-almost-time-get-know-higgs-boson-better
  • Siegfried, Tom. "It's Too Soon to Declare Supersymmetry a Tragedy." Science News. Oct. 17, 2013. (July 22, 2014) https://www.sciencenews.org/blog/context/it%E2%80%99s-too-soon-declare-supersymmetry-tragedy?mode=blog&context=117
  • Siegfried, Tom. "Higgs Mass isn't Natural, but Maybe It Shouldn't Be." Science News. June 23, 2014. (July 22, 2014) https://www.sciencenews.org/blog/context/higgs-mass-isnt-natural-maybe-it-shouldnt-be
  • Strassler, Matt. "What's a proton, anyway?" Of Particular Significance Blog. (Aug. 5, 2014) http://profmattstrassler.com/articles-and-posts/largehadroncolliderfaq/whats-a-proton-anyway/
  • Than, Ker. "Densest Matter Created in Big-Bang Machine." National Geographic News. May 24, 2011. (July 22, 2014) http://news.nationalgeographic.com/news/2011/05/110524-densest-matter-created-lhc-alice-big-bang-space-science/

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