Scientists at CERN to make an announcement on Wednesday
Scientists at the world’s biggest atom smasher plan to announce on
Wednesday that they have gathered enough evidence to show that the
long-sought “God particle” answering fundamental questions about the
universe almost certainly does exist.
But after decades of work and billions of dollars spent, researchers at
the European Organization for Nuclear Research, or CERN, aren’t quite
ready to say they’ve “discovered” the particle.
Instead, experts familiar with the research in CERN’s vast complex on
the Swiss-French border say the massive data they have obtained will
essentially show the footprint of the key particle known as the Higgs
boson all but proving it exists but doesn’t allow them to say it has
actually been glimpsed.
It appears to be a fine distinction.
Senior CERN scientists say the two independent teams of physicists who
plan to present their work on July 4 are about as close as you can get
to a discovery without actually calling it one.
“I agree that any reasonable outside observer would say, ‘It looks like a
discovery,’” British theoretical physicist John Ellis, a professor at
King’s College, London, who has worked at CERN since the 1970s, told The
Associated Press.
CERN’s atom smasher, the $10-billion Large Hadron Collider, has been
creating high-energy collisions of protons to help them understand
suspected phenomena such as dark matter, antimatter and ultimately the
creation of the universe billions of years ago, which many theorise
occurred as a massive explosion, known as the Big Bang.
The discovery of the Higgs boson won’t change people’s lives, but will
help explain the underpinnings of the universe. It would confirm the
standard model of physics that explains why fundamental particles have
mass. Those particles are the building blocks of the universe. Mass is a
trait that combines with gravity to give an object weight.
The phrase “God particle,” coined by Nobel Prize-winning physicist Leon
Lederman, is used by laymen, not physicists, more as an explanation for
how the wonders of the subatomic universe work than how it all started.
Rob Roser, who leads the search for the Higgs boson at the Fermilab in
Chicago, said: “Particle physicists have a very high standard for what
it takes to be a discovery,” and he thinks it is a hair’s breadth away.
Mr. Rosen compared the results that scientists are preparing to announce
to finding the fossilized imprint of a dinosaur. “You see the
footprints and the shadow of the object, but you don’t actually see it.”
Though an impenetrable concept to many, the Higgs boson has until now
been just that a concept intended to explain a riddle — How were the
subatomic particles, such as electrons, protons and neutrons, themselves
formed? What gives them their mass?
The answer came in a theory first proposed by physicist Peter Higgs and
others in the 1960s. It envisioned an energy field where particles
interact with a key particle, the Higgs boson.
The idea is that other particles attract Higgs boson and the more they
attract, the bigger their mass will be. Some liken the effect to a
ubiquitous Higgs snowfield that affects other particles travelling
through it depending on whether they are wearing, metaphorically
speaking, skis, snowshoes or just shoes.
Officially, CERN is presenting its evidence at a physics conference in
Australia this week, but plans to accompany the announcement with
meetings in Geneva. The two teams, ATLAS and CMS, then plan to publicly
unveil more data on the Higgs boson at physics meetings in October and
December.
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