New Tetraquark Particles Discovered

Posted: Feb 27 2016, 10:58am CST | by , in News | Latest Science News

 
New Tetraquark Particles Discovered
Graphic symbolising a tetraquark, by Fermilab

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A group of scientists discovered a new elementary particle.

Physicists have discovered a new elementary particle belonging to the exotic species known as tetra-quarks.

The new tetraquarks discovery was made by researchers involved in the DZero collaboration at Fermilab, the US Government's laboratory specializing in high-energy particle physics.

Lancaster University Professor Iain Bertram said: “It is exciting to discover a new and unusual particle that will help us understand the strong interaction - one of the four known fundamental interactions in physics.”

DZero is one of two experiments at Fermilab's Tevatron collider. Although the Tevatron was retired in 2011, the experiments continue to analyze billions of previously recorded events from its collisions.

The tetraquark observation came as a surprise when DZero scientists first saw hints in July 2015 of the new particle, called X(5568), named for its mass – 5568 megaelectronvolts.

Quarks are point-like elementary particles that typically come in packages of two or three, the most familiar of which are the proton and neutron (each is made of three quarks). Tetraquarks – four quarks together – are much rarer and are not well understood.

There are six types, or “flavors,” of quark to choose from: up, down, strange, charm, bottom and top. Each of these also has an antimatter counterpart.

While all other observed tetraquarks contain at least two of the same flavor, X(5568) has four different flavors – up, down, strange and bottom.

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<a href="/latest_stories/all/all/2" rel="author">Luigi Lugmayr</a>
Luigi Lugmayr () is the founding chief Editor of I4U News and brings over 15 years experience in the technology field to the ever evolving and exciting world of gadgets. He started I4U News back in 2000 and evolved it into vibrant technology magazine.
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