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The new hadron Z(4430) has - hold onto your hats - two quarks and two anti-quarks, say scientists with 'unprecedented certainty.'
new form of exotic subatomic particle that upends particle-physics tradition was announced on Wednesday by scientists at CERN, the European Organization for Nuclear Research. The particle is a new type of hadron, which is a particle in the atom nucleus typically consisting of three quarks, or one quark and one anti-quark (which has the same mass as a quark, but the opposite charge). The form of hadron announced...
First conclusive proof after 40 years of searching
Scientists at CERN’s Large Hadron Collider (LHC) have confirmed the existence of a new class of subatomic particles, exotic hadrons.
A new measurement performed by the LHCb collaboration, one of the four large experiments at the LHC at CERN, has confirmed the existence of the exotic object labeled the Z(4430)-. This particle does not fit into the pattern of particles we have seen up to now. The LHCb result confirms an observation made by the Belle collaboration in 2008 that was later questioned and so resolves this previously unclear situation.
“We and everything around us are made of atoms, and atoms are made in turn of smaller constituents. Atomic nuclei are orbited by electrons. The protons and neutrons that form atomic nuclei consist of three fundamental particles, called quarks, bound together. Other combinations of quarks can occur - particles containing two bound quarks (mesons) are also seen in nature. However, until now all particles containing quarks (hadrons) have conformed to one of these two types; quarks seem to like to come in twos or threes,” a press release from Science and Technology Facilities Council, which reported the discovery, stated.
However, the underlying theory of quantum chromodynamics (QCD) that describes the behaviour of quarks allows for many different quark combinations, such as four quark states, to bind together into hadrons. Over the last 40 years many searches for such exotic states have been performed but until now there was no conclusive proof of their existence. Several more mundane explanations for the Z(4430)- signal seen by Belle had been put forward, but the LHCb result establishes that for the first time we have seen the “smoking gun” signal for resonant behavior of a particle that contains at least four quarks/antiquarks.
The “4430” refers to the (approximate) mass of this state, corresponding to roughly four times the mass of a proton.
minusinfinity
reply to post by Xcathdra
Pay 2 read?
Bull#.
If it was important it would be posted on Facebook.
Edit- Sorry.
Thanks for the update.edit on 16-4-2014 by minusinfinity because: (no reason given)
Shepard64
Big discovery! Now I wonder what they can do with this new found knowledge. CERN has big things on the horizon
minusinfinity
Do you guys really understand this mumbo jumbo? If you do then why not explain it so the average person can understand?
Xcathdra
The new discoveries do not meet the established norms scientists have developed.
minusinfinity
reply to post by Xcathdra
Okay thank you for the response.
Is this going impact the average person anytime soon.
Curious.
Saying something does "not meet the established norms" is a far cry from saying the laws of physics need to be rewritten.
VoidHawk
Xcathdra
The new discoveries do not meet the established norms scientists have developed.
I hope all those who say "It cant work because of the law of physics" read that!
Free energy? "It cant work because of the law of physics"
Anti gravity? "It cant work because of the law of physics"
Read it again folks - "The new discoveries do not meet the established norms scientists have developed.".
What else will be turned on its head?
I wouldn't take it personally, some duplicate threads get closed right away, some never get closed because the mods can't find them all and sometimes members report them, sometimes not.
ErosA433
3rd repost of this... I repost something once and i get pounced on...? odd right?