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Physicists find 'rebel' particle
BBC ^
| 30 April, 2003, 11:16 GMT 12:16 UK
| By Dr David Whitehouse
Posted on 04/30/2003 1:05:30 PM PDT by alnitak
click here to read article
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To: techcor
Now what about those Tachyon particles....
21
posted on
04/30/2003 2:29:39 PM PDT
by
ffusco
(Maecelius Fuscus, Governor of Longovicium, Britannia (Manchester, England. AD 238- AD 244))
To: ffusco
Because they are FTL they are traveling back in time. If you can't remember seeing them by now, you probably never will.
22
posted on
04/30/2003 2:33:42 PM PDT
by
techcor
(Admin Moderator wannabe)
To: techcor
Why was Woody Boyd's middle name Tiberius?
23
posted on
04/30/2003 2:42:55 PM PDT
by
ffusco
(Maecelius Fuscus, Governor of Longovicium , (Manchester, England. 238-244 AD))
To: Doctor Stochastic
Isn't there a children's book called "BaBar"?You mean this guy?
To: Physicist
The article says this:
This force [that binds the quarks together], unlike most others in nature, becomes stronger as the distance between the two quarks increases. It's not surprising that I'm not up to date in this exotic field, but I didn't expect to be totally blindsided by something. How long has this been going on? I assume this is the reason that no free quarks exist in nature. Still, it's a darn curious thing.
25
posted on
04/30/2003 4:00:04 PM PDT
by
PatrickHenry
(Felix, qui potuit rerum cognoscere causas.)
To: alnitak
read later
To: alnitak
read later
To: PatrickHenry
It's not surprising that I'm not up to date in this exotic field, but I didn't expect to be totally blindsided by something. How long has this been going on? Since the universe was 10-5 seconds old, when the hadrons formed. ;^)
The theory was worked out in the 1960's. The key features of QCD are confinement and asymptotic freedom. Confinement means that the quarks are confined to hadrons, as you mentioned. Asymptotic freedom means that as the quarks get closer and closer together, the strong-force interaction between them asymptotically approaches zero, i.e. they behave as free particles as far as the strong force is concerned. (They still interact electromagnetically, etc.)
Both of these features are exhibited by a force that is directly proportional to distance. Asymptotic freedom is obvious--the force goes to zero at zero distance--but confinement is less obvious. That arises from the fact that the quarks have finite masses. If the force is proportional to distance, you can only pull a quark and an antiquark so far apart before you put in enough energy to pry a new quark-antiquark pair out of the vacuum. The color charges cancel those of the quarks you're pulling apart, and they "hadronize": the new quark pairs up with the old antiquark, the new antiquark pairs up with the quark, and you have two "colorless" mesons instead of two quarks.
The usual pedagogical analogy is to try to obtain monopoles by pulling a bar magnet apart. It just won't work.
To: techcor
The Warp Speed of the Enterprise is adjusted so it takes exactly one week minus an hour to get to the next episode destination on time.
29
posted on
04/30/2003 4:48:56 PM PDT
by
RightWhale
(Theorems link concepts; proofs establish links)
To: PatrickHenry
This force [that binds the quarks together], unlike most others in nature, becomes stronger as the distance between the two quarks increases.
And these scientists don't have teenage kids?
Scientists discover "Rebel" particle.
Has anyone told the NAACP yet?
30
posted on
04/30/2003 4:53:08 PM PDT
by
tet68
(Jeremiah 51:24 ..."..Before your eyes I will repay Babylon for all the wrong they have done in Zion")
To: *RealScience; Ernest_at_the_Beach
To: Physicist
The usual pedagogical analogy is to try to obtain monopoles by pulling a bar magnet apart. It just won't work. Maybe the Teamsters were doing a preemptive strike in anticipation of this thread. ;^)
To: alnitak
Quarks are fundamental particles of which there are six There are also the "charm", "strange", as well as the "top" and "bottom" quarks. These are heavier than the up and down quarks. Quarks can also have antiparticles such as anti-down, etc. They are faculty PHD's in Subatomic Physics and also scriptwriters for "Barney's Playhouse"
To: Physicist
And there's no Top Quark. Quarks exist in an autonomous hadronic collective.
34
posted on
04/30/2003 8:21:38 PM PDT
by
Doctor Stochastic
(Vegetabilisch = chaotisch is der Charakter der Modernen. - Friedrich Schlegel)
To: Doctor Stochastic
You're fooling yourself. We're living in a spontaneously broken mass hierarchy.
To: alnitak
Ping to read after coffee!!!
36
posted on
05/01/2003 4:39:47 AM PDT
by
Eaker
(64,999,987 firearm owners killed no one yesterday. Somehow, it didn't make the news.)
To: ffusco
Because "Tiberius" was the "T." in "James T. Kirk"?
37
posted on
05/01/2003 6:09:43 AM PDT
by
techcor
(Admin Moderator wannabe)
To: RightWhale
Unless it was "season finale" in which case the ship traveled 3months minus two hours. Talk about time warps. Talk about time warps.
38
posted on
05/01/2003 6:11:28 AM PDT
by
techcor
(Admin Moderator wannabe)
To: Physicist
Do the masses obtain by willfully breaking the symmetries?
39
posted on
05/01/2003 6:20:36 AM PDT
by
Doctor Stochastic
(Vegetabilisch = chaotisch is der Charakter der Modernen. - Friedrich Schlegel)
To: Physicist; PatrickHenry
***How long has this been going on? **** Since the universe was 10-5 seconds old, when the hadrons formed. ;^) ========================================================
Well, if you can't be any more specific than that....
</sarcasm mode>
Your reply to PH was simply delightful; succinct and chock-full of fascinating info.
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