Presented by Brunel University, Imperial College London, Lancaster Univeristy, Queen Mary, University of London, Rutherford Appleton Laboratory, Royal Holloway, University of London, University College London, University of Birmingham, University of Bristol, University of Cambridge, University of Edinburgh, University of Glasgow, University of Liverpool, University of Manchester, University of Oxford, University of Sheffield, University of Sussex, University of Warwick
School of Physics & Astronomy, University of Birmingham
School of Engineering & Design, Brunel University
School of Physics & Astronomy, University of Edinburgh
Department of Physics, Lancaster University
- ATLAS Collaboration 2012 Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC. Physics Letters B 716,1-29
- CMS collaboration 2012 Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC. Physics Letters B 716, 30-61
- CDF Collaboration and D0 Collaboration 2012 Evidence for a particle produced in association with weak bosons and decaying to a bottom-antibottom quark pair in Higgs boson searches at the Tevatron. Physical Review Letters 109 071804
At the smallest distance scales, the world can be understood in terms of apparently structureless objects, known as elementary particles. The behaviour of these particles is described by a set of theories referred to as the Standard Model of Particle Physics. The Standard Model successfully accounts for a wide variety of experimental observations, but links the origin of mass to a particle termed the ‘Higgs boson’, the existence of which has long remained unconfirmed.
How it works
In July 2012, the ATLAS and CMS experiments at the Large Hadron Collider (LHC), the world's highest-energy particle accelerator, announced the discovery of a new particle consistent with the Higgs boson. Studies in progress will measure the properties of this particle, to determine whether it's the Higgs boson of the Standard Model, or something more exotic. Either way, results will provide new insight into how the Universe is made.
The search for the Higgs boson is science on an epic scale. It is a quest that has spanned half a century, creating some of the most ambitious scientific experiments ever seen. Experiments prior to the first LHC collisions, in November 2009, found no clear evidence for the existence of the Higgs boson, but placed constraints on its mass.
The ATLAS and CMS experiments have discovered a new particle that, from initial measurements, has mass, production rate and decay probabilities consistent with the Higgs boson. The extraction of the small signal for the new particle, from a background of trillions of proton-proton collisions, has relied on high-performance detectors for particle identification and measurement, ultrafast electronics for filtering during data collection, sophisticated data-processing algorithms and massive calculational power, provided by a worldwide computing grid.
For more information available at: http://www.understanding-the-higgs-boson.org/