Large Hadron Collider

The Large Hadron Collider (LHC) is the world's largest and most powerful particle collider, built by the European Organization for Nuclear Research (CERN) from 1998 to 2008. Its aim is to allow physicists to test the predictions of different theories of particle physics and high-energy physics, and particularly prove or disprove the existence of the theorized Higgs particle and of the large family of new particles predicted by supersymmetric theories. The LHC is expected to address some of the unsolved questions of physics, advancing human understanding of physical laws. It contains seven detectors, each designed for certain kinds of research.

The LHC was built in collaboration with over 10,000 scientists and engineers from over 100 countries,
as well as hundreds of universities and laboratories.

The LHC lies in a tunnel 27 kilometres (17 mi) in circumference, as deep as 175 metres (574 ft) beneath the Franco-Swiss border near Geneva, Switzerland. As of 2014, the LHC remains one of the largest and most complex experimental facilities ever built. Read more ...


Large Hadron Collider finds five new subatomic particles 'hiding in plain sight' that could shed new light on how the universe began   Daily Mail - March 20, 2017
They were discovered by scientists in charge of the LHCb experiment, also known as 'beauty', which is exploring what happened just after the Big Bang that gave birth to the universe. By measuring their properties, physicists hope to gain greater insight into the strong nuclear force that binds the building blocks of atoms together.


Ghost in the Machine: Atom Smasher's 'New Particle' Was Illusion   Live Science - August 11, 2016
When you're searching high and low for your lost keys, sometimes the places where you don't see them can help you narrow down where they might be. In science, the search for new physics often takes a similar path. In December 2015, scientists at the Large Hadron Collider (LHC) - the world's largest particle accelerator - thought they may have seen a hint of a brand-new particle, and with it, a window into physics beyond what scientists know now. But the findings turned out to be ghosts, a statistical fluke. Yet despite the negative result, the fact that there is nothing there shows that reigning theories of particle physics are working remarkably well, experts said. But that result only deepens the mysteries physicists are trying to solve, and pushes them to find out just where new particles or forces could be hiding.

An awe-inspiring new video is a reminder of just how enormous the Large Hadron Collider really is - and it looks even bigger when you get to see all of it. The video (above), which BBC News released last week, offers an unprecedented 360-degree view of the particle collider. At any time during the video, viewers can click on the screen and drag the mouse to reorient their point of view within the massive machine. ItŐs something very few people have seen, narrator Spencer Kelly says in the video. The LHC is the largest machine in the world and sits a little more than 325 feet beneath the Swiss-French border.


Large Hadron Collider discovers new pentaquark particle   BBC - July 14, 2015
September 15, 2015 It was first predicted to exist in the 1960s but, much like the Higgs boson particle before it, the pentaquark eluded science for decades until its detection at the LHC. The discovery, which amounts to a new form of matter, was made by the Hadron Collider's LHCb experiment.

First images of LHC collisions at 13 TeV   PhysOrg - May 21, 2015

A key part of the process was the set-up of the collimators. These devices which absorb stray particles were adjusted in colliding-beam conditions. This set-up will give the accelerator team the data they need to ensure that the LHC magnets and detectors are fully protected. Today the tests continue. Colliding beams will stay in the LHC for several hours. The LHC Operations team will continue to monitor beam quality and optimization of the set-up.

LHC smashes energy record with test collisions   BBC - May 21, 2015

A new record has been set by the Large Hadron Collider: its latest trials have smashed atoms with vastly more energy than ever before. On Wednesday night, two opposing beams of protons were steered into each other at the four collision points spaced around the LHC's tunnel. The energy of the collisions was 13 trillion electronvolts - dwarfing the eight trillion reached during the LHC's first run, which ended in early 2013.

Giant Atom Smasher Revs up: Physicists Reveal What They're Looking For   Live Science - April 14, 2015
The first run of the LHC had a single overarching goal: finding the Higgs boson, the particle that explains how other particles get their mass. With that task accomplished in 2012, scientists are now on the hunt for completely new physics.
1.The fifth dimension
2. New Higgs particles
3. Evidence for supersymmetry
4. Particle to Dark Matter
5. Sub-subatomic particles
6. Particles that can validate, or disprove, existing theories ... something completely out of left field

The Higgs Boson

The Higgs Boson was discovered on July 4, 2012. The discovery has been called "monumental" because it appears to confirm the existence of the Higgs field, which is pivotal to the Standard Model and other theories within particle physics. It would explain why some fundamental particles have mass when the symmetries controlling their interactions should require them to be massless, and why the weak force has a much shorter range than the electromagnetic force.

The discovery of a Higgs boson should allow physicists to finally validate the last untested area of the Standard Model's approach to fundamental particles and forces, guide other theories and discoveries in particle physics, and potentially lead to developments in "new" physics. By August 2014, the LHC had discovered a massive 125 GeV boson (which subsequent results confirmed to be the long-sought Higgs boson) and several composite particles.

Higgs boson could also explain the earliest expansion of the Universe   PhysOrg - August 16, 2014
The Higgs boson, which was recently confirmed to be the origin of mass, may also be responsible for the mode of inflation and shape of the Universe shortly after the Big Bang.

Sounds of the Higgs Boson

Higgs Music: What the World's Largest Atom Smasher Sounds Like   Live Science - October 3, 2014

  What would the Higgs boson-like particle sound like?   BBC - July 10, 2012

  Physicists simulate sounds of the Higgs boson   PhysOrg - June 23, 2010