Has CERN seen the Higgs boson?Wed 4th July 2012
Earlier today at a seminar at CERN researchers working on the LHC announced that they have observed a particle where they would expect to find the Higgs boson. The announcement is the first step towards a true landmark in modern physics but it’s not a categorical declaration of the Higgs’ existence. However this discovery would not have been possible without the global computing grid, which GridPP is a major contributor to and one of its founding members.
Particle physics relies on two things; mathematics and particle accelerators. The first is where it all begins, attempting to explain how the world works through understanding the underlying maths. The second is the fun bit, researchers accelerate particles to high speeds and collide them with each other or against a target. The current state-of-the-art accelerator is the Large Hadron Collider (LHC), a 27km ring buried under the French/Swiss border accelerating protons to near the speed of light and colliding them. The LHC’s collisions recreate the conditions of the early universe, produce particles that we don’t see “in the wild” and help explain how the universe works. One of the particles it was hoped the LHC would create was the Higgs.
A candidate for a Higgs to Gamma Gamma decay in the CMS detector
“This could be the last piece of the standard model” explains Dr. David Colling, from Imperial College London who works on GridPP and Higgs searches, “It could also prove to be the first glimpse of something beyond it. We are definitely on the verge of something interesting and we have a fascinating few years to come”.
“The performance of the GridPP as part of the worldwide LHC Computing Grid has been fantastic. We have been a leader in this area for the last ten years and I couldn’t be more proud of what we have helped achieve”, says Prof. David Britton, GridPP Project Leader. “The global community has allowed vast quantities of data to be analysed in an astonishingly short time. The last data that the ATLAS experiment included in their analyses had been taken less than a week earlier”.
This announcment is not the end of the story for either the LHC or the grid. There are many more exciting areas of research that use the world’s largest machine including studying the top quark, as talked about in the 3rd “Stories from the grid” episode. And the grid is now a major tool for researchers across the globe working on disciplines as diverse as the humanities and computational chemistry.