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Posted by on Jul 4, 2012 in Science | 0 comments

Breaking: Existence of Higgs boson like particle found, announced by CERN

Candidate Higgs decay to four electrons recorded by ATLAS in 2012.
Pic courtesy : CERN

Today CERN (European Organisation for Nuclear Research ) announced a major discovery that they are conclusive about existence of a Higgs bosson like particle.

Some dubbed this discovery like, ‘what theory of evolution was like to the bioligists, discovery of existence of Higgs boson would be for Physicists’.

Higgs boson is an elementary particle in the Standard Model of particle physics belonging to a class of particles called bosons, named after the eminent british physicist Peter Ware Higgs who along with many other scientists brought the Higgs mechanism which predicts the existence of bosson particle and Indian physicist Satyendra Nath Bose known for his work on Bose-Einstein statistics.

Though Standard Model successfully describes all of the elementary particles we know to exist and how they interact with one another, it does not answer ‘Why do most of these elementary particles have masses?’

The ATLAS and CMS experiments aim to find the answer for the above question, the key to which is the finding of the Higgs boson particle. The experiments were run on The Large Hadron Collider (LHC) is a gigantic scientific instrument near Geneva, where it spans the border between Switzerland and France about 100m underground. It is a particle accelerator used by physicists to study the smallest known particles – the fundamental building blocks of all things.

The experiments found hints of the new particle by analysing trillions of proton-proton collisions from the Large Hadron Collider (LHC) in 2011 and 2012. The Standard Model of particle physics predicts that a Higgs boson would decay into different particles – which the LHC experiments then detect.

Both ATLAS and CMS gave the level of significance of the result as 5 sigma on the scale that particle physicists use to describe the certainty of a discovery. One sigma means the results could be random fluctuations in the data, 3 sigma counts as an observation and a 5-sigma result is a discovery. The results presented today are preliminary, as the data from 2012 is still under analysis. The complete analysis is expected to be published around the end of July.

Scientists working on the experiment said, ‘This is a discovery of existence of particle which has characteristics of a Higgs bosson, The actual finding of the particle may take another 3-4 years’. They also said, the final discovery may throw new light on the Standard Model and the actual Higgs bosson might be more in accordance with the Standard Model or might deviate in its properties’. The scientists did not deny that, their experiments could bring more particles new to physics and not just the Higgs boson.

“It’s hard not to get excited by these results,” said CERN Research Director Sergio Bertolucci. “ We stated last year that in 2012 we would either find a new Higgs-like particle or exclude the existence of the Standard Model Higgs. With all the necessary caution, it looks to me that we are at a branching point: the observation of this new particle indicates the path for the future towards a more detailed understanding of what we’re seeing in the data.”

“We have reached a milestone in our understanding of nature,” said CERN Director General Rolf Heuer. “The discovery of a particle consistent with the Higgs boson opens the way to more detailed studies, requiring larger statistics, which will pin down the new particle’s properties, and is likely to shed light on other mysteries of our universe.”

The man behind the name of the super particle, Peter Ware Higgs was present at the press conference. He said ‘ he is excited on this remarkable discovery and is glad that it took place during his lifetime’.
Many eminent scientists present at the event said ‘they had been working on the super particle for past 50 years and had been conducting experiments for 25 years to prove its existence’.

According to CERN, both ATLAS and CMS gave the level of significance of the result as 5 sigma on the scale that particle physicists use to describe the certainty of a discovery. One sigma means the results could be random fluctuations in the data, 3 sigma counts as an observation and a 5-sigma result is a discovery. The results presented today are preliminary, as the data from 2012 is still under analysis. The complete analysis is expected to be published around the end of July.

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Indiandragon though Developer, Hacker and Researcher by profession, he aslo writes on Movies, Sports and Entertainment in News@Indiandragon. He specialises in Technology, Defence and Information Security.