Tuesday, August 30, 2011

Revamp might may not work

The Standard Model has been very successful, but with loopholes many people try to revamp with traditional ideas. One such idea is the supersymmetry, which says that, a new symmetry might exist between bosons and fermions. To implement such symmetry, new particles have to be inserted in the architecture. Now it runs in deep trouble: no such particles have ever been detected in LHC, which is the most hopeful place to find them.

They come from the LHC Beauty (LHCb) experiment, one of the four main detectors situated around the collider ring at the European Organisation for Nuclear Research (Cern) on the Swiss-French border.

According to Dr Tara Shears of Liverpool University, a spokesman for the LHCb experiment: "It does rather put supersymmetry on the spot".

Start Quote

There's a certain amount of worry that's creeping into our discussions”

End Quote Dr Joseph Lykken Fermilab

The experiment looked at the decay of particles called "B-mesons" in hitherto unprecedented detail.

If supersymmetric particles exist, B-mesons ought to decay far more often than if they do not exist.

There also ought to be a greater difference in the way matter and antimatter versions of these particles decay.

The results had been eagerly awaited following hints from earlier results, most notably from the Tevatron particle accelerator in the US, that the decay of B-mesons was influenced by supersymmetric particles.

LHCb's more detailed analysis however has failed to find this effect. [http://www.bbc.co.uk/news/science-environment-14680570]


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