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Fundamental matter-antimatter symmetry confirmed

 
DrugTheChildren
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08/01/2011 08:01 AM
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Fundamental matter-antimatter symmetry confirmed
According to modern cosmology, matter and antimatter were created in equal amounts in the Big Bang at the beginning of the universe. Physicists are developing concepts to explain why the visible universe now seems to be made entirely out of matter. On the other hand, experimental groups are producing antimatter atoms artificially to explore the fundamental symmetries between matter and antimatter, which according to the present theories of particle physics should have exactly the same properties, except for the opposite electrical charge). Now the independent research group “Antimatter Spectroscopy” of Dr. Masaki Hori, which is associated with the Laser Spectroscopy Division of Prof. Theodor W. Hänsch at the Max Planck Institute of Quantum Optics, has measured the mass of the antiproton relative to the electron with a precision of 1.3 parts per billion (Nature, 28 July 2011). For this they used a new method of laser spectroscopy on a half-antimatter, half-matter atom called antiprotonic helium. The result agreed with the proton mass measured to a similar level of precision, confirming the symmetry between matter and antimatter. The experiment was carried out at the European Laboratory for Particle Physics (CERN) in Geneva (Switzerland) in a project led by scientists from the Max Planck Institute of Quantum Optics and Tokyo University (Japan), and including the University of Brescia (Italy), the Stefan Meyer Institute (Vienna, Austria), and the KFKI Research Institute (Budapest, Hungary).

Physicists believe that the laws of nature obey a fundamental symmetry called “CPT” (this stands for charge conjugation, parity, and time reversal), which postulates that if all the matter in the universe were replaced with antimatter, left and right inverted as if looking into a mirror, and the flow of time reversed, this “anti-world” would be indistinguishable from our real matter world. Antimatter atoms should weigh exactly the same as their matter counterparts. If scientists were to experimentally detect any deviation, however small, it would indicate that this fundamental symmetry is broken. “Small” is the keyword here – it is essential to use the most precise methods and instruments available to make this comparison with the highest possible precision.

Antimatter is extraordinarily difficult to handle in the laboratory, because upon coming into contact with ordinary matter (even the air molecules in a room), it immediately annihilates, converting into energy and new particles. In 1997, researchers from the Max Planck Institute of Quantum Optics in cooperation with other European, Japanese, and American groups began construction of a facility called the Antiproton Decelerator (AD) at CERN. Here antiprotons produced in high-energy collisions are collected and stored in a vacuum pipe arranged in a 190-m-long racetrack shape. The antiprotons are gradually slowed down, before being transported to several experiments. The so-called ASACUSA1 (Atomic Spectroscopy and Collisions using Slow Antiprotons, named after a district in Tokyo) collaboration, of which Dr. Hori is one of the project leaders, sends the antiprotons into a helium target to create and study antiprotonic helium atoms.
[link to www.physorg.com]
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Last Edited by Heretic™ on 08/01/2011 08:02 AM
DrugTheChildren  (OP)

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08/01/2011 08:02 AM
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Re: Fundamental matter-antimatter symmetry confirmed
yoda
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08/01/2011 08:07 AM
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Re: Fundamental matter-antimatter symmetry confirmed
Confirmed at 1.3 parts per billion.
KAITIAKI

User ID: 1116636
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08/01/2011 08:42 AM
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Re: Fundamental matter-antimatter symmetry confirmed
Any chance of a laymans explanation ?, just an outline ?
And why ? why do this ? and is there anything to the rumourt hat in playing with these experiments there is a 75% chance of creating an extinction level event ? and is the T2K experiments in Japan similar ? and or are these working towards teleportation to satelites/ space stations or planets ? and is there anything to creating a quark cannon or something of the like to shoot a black hole at an incomming object to swallow it rather than move it away ? an was the T2K fired 100km through the earth to the receiver done at the time of the Japan quake and the possible cause of some of that whole drama ? and is there anything behind the theory the CERN LHC is like a giant gyroscope to help counter a pole flip / shift caused by a passing celestial body ? and do you think the trend of increasing sink holes on earth are a result of these experiments ? and is this line of research aimed at helping to understand the recent event of increasing carbon decay and / or unexplained photon activity on and around earth and our solar system ?

Thanks Bro, not being stupid just a lil ignorant and you really sound like you know your stuff !!

cheers
Anonymous Coward
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08/01/2011 08:46 AM
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Re: Fundamental matter-antimatter symmetry confirmed
mirror bizzaro universe.......





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