Discovery of Higgs Boson Particle - GOD Particle

Scientists are Near To Discover Higgs Boson Particle - GOD Particle

Two days back that is 21st July 2011 they discovered a new particle (Not Higgs Boson) - Xi-sub-b (baryon)

Its components are an up quark, a down quark, and a "strange" quark, which is a heavier variant of the down quark. A normal neutron, which doesn't typically disintegrate in an instant, is made up of two down quarks and an up quark.

On 22nd July 2011 , A News Published on BBC Website - Large Hadron Collider results excite scientists

The Large Hadron Collider (LHC) has picked up tantalising fluctuations which might - or might not - be hints of the sought-after Higgs boson particle.

Either way, if the sub-atomic particle exists it is running out of places to hide, says the head of the European Organization for Nuclear Research (Cern), which runs the LHC.
He told BBC News the collider had now ruled out more of the "mass range" where the Higgs might be.
The new results are based on analyses of data, gathered as the vast machine smashes beams of protons together at close to light speeds.

One of their primary goals is to search for hints of the Higgs, which is the last missing piece in the Standard Model - the most widely accepted theory of particle physics.

Without the Higgs, physicists cannot explain why particles have mass. But despite the best efforts of scientists working on both sides of the Atlantic to detect it experimentally, the boson remains a theoretical sub-atomic particle.

The Large Hadron Collider is a vast machine built in an underground tunnel that runs in a circle for 27km under the French-Swiss border.
It accelerates two beams of proton particles at light speed around the circular tunnel and smashes them together at selected collision points around the underground ring. By looking at what is produced in these particle collisions, physicists should be able to shed further light on the nature of the cosmos

Source : http://www.bbc.co.uk/news/science-environment-14258601

First Higgs search results from LHC and Tevatron

First Higgs search results from LHC and Tevatron

Experiments at Fermi National Accelerator Laboratory and the European particle physics center, CERN, are zooming in on the final remaining mass region where the Higgs particle might be lurking. Over the next seven days, Fermilab’s CDF and DZero collaborations and CERN’s ATLAS and CMS collaborations will announce their latest Higgs search results at the High-Energy Physics conference of the European Physical Society.

Scientists at Fermilab and CERN employ very similar methods to create the Higgs: accelerate particles to high energy using the world’s most powerful accelerators, the Tevatron (1 TeV beam energy) and the Large Hadron Collider (3.5 TeV), smash the particles together, and sift through the large number of new particles emerging from these collisions. But to find a Higgs particle among the many particles created, the teams of scientists are focusing on different signals (see below).

If the Higgs particle exists and has the properties predicted by the simplest Higgs model, named after Scottish physicist Peter Higgs, then the colliders at Fermilab and CERN already must have produced Higgs particles. But finding the tell-tale sign of a Higgs boson among all other particle signatures is like searching for a drop of ink in an ocean. Only if the accelerators produce more and more collisions do scientists stand a chance of finding enough evidence for the Higgs particle.

explains why some fundamental particles have mass and others don’t

Higgs search at the Tevatron

At Fermilab’s Tevatron, scientists attempt to produce Higgs particles by smashing together protons and antiprotons, composite particles that comprise elementary building blocks. When a proton and antiproton hit each other at high energy, scientists observe the collisions and interactions of these components, such as quarks, antiquarks and gluons. Those subatomic collisions transform energy into new particles that can be heavier than the protons themselves, as predicted by Einstein’s famous equation E=mc².

Tevatron scientists have carried out detailed simulations of such collisions and found that the best chance for producing, say, a 120-GeV Higgs boson at the Tevatron are quark-antiquark collisions that create a high-energy W boson (see graphic). This W boson has a chance to spend its extra energy to generate a short-lived Higgs boson. The W boson and the Higgs boson would then decay into lighter particles that can be caught and identified by the CDF and DZero particle detectors, which surround the two proton-antiproton collision points of the Tevatron.
According to the Standard Model, such a 120-GeV Higgs boson will decay 68 percent of the time into a bottom quark and anti-bottom quark. But other collision processes and particle decays also produce bottom and anti-bottom quarks. Identifying an excess of these particles due to the decay of the Higgs boson is the best chance for Tevatron scientists to discover or rule out a Standard Model Higgs.

For details visit : http://www.symmetrymagazine.org/breaking/2011/07/22/how-to-find-the-higgs-particle/