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BigPapaSmurf
SFN Die Hard
3192 Posts |
 Posted - 06/29/2007 : 11:29:24
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for all you particle physics lurkers out their...
1. Why the hell is a tau the only particle that doesnt end with 'on', tauon too long? Edit: Besides quarks of course.
real questions
2. What does a tau decay into besides tau nutrinos? i.e. why is it so massive?
3. Explain if you could the conceptual difference between a boson which only spins at 0 or whole integers and a fermion which spins at half integers.
Also could you write for me a 10,000 word essay on leptoquarks, I need it by 5pm est.
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"...things I have neither seen nor experienced nor heard tell of from anybody else; things, what is more, that do not in fact exist and could not ever exist at all. So my readers must not believe a word I say." -Lucian on his book True History
"...They accept such things on faith alone, without any evidence. So if a fraudulent and cunning person who knows how to take advantage of a situation comes among them, he can make himself rich in a short time." -Lucian critical of early Christians c.166 AD From his book, De Morte Peregrini |
Edited by - BigPapaSmurf on 06/29/2007 11:34:09
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Dave W.
Info Junkie
USA
26022 Posts |
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BigPapaSmurf
SFN Die Hard
3192 Posts |
Posted - 06/29/2007 : 12:07:53 [Permalink]
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Dave if I wanted to do research I wouldnt have asked, sheesh.
Yes Im a dumb-ass for forgeting nutrinos, I suppose they all end in 'on' if I refer to them as leptons.
However W and Z are W and Z bosons so technically they end in 'on'
Edit: heres my new #1 question
Why the hell are quarks the only particles which dont end in 'on'?!?! |
"...things I have neither seen nor experienced nor heard tell of from anybody else; things, what is more, that do not in fact exist and could not ever exist at all. So my readers must not believe a word I say." -Lucian on his book True History
"...They accept such things on faith alone, without any evidence. So if a fraudulent and cunning person who knows how to take advantage of a situation comes among them, he can make himself rich in a short time." -Lucian critical of early Christians c.166 AD From his book, De Morte Peregrini |
| Edited by - BigPapaSmurf on 06/29/2007 12:09:37 |
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Dave W.
Info Junkie
USA
26022 Posts |
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Cuneiformist
The Imperfectionist
USA
4955 Posts |
Posted - 06/29/2007 : 12:27:43 [Permalink]
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Originally posted by Dave W.
'Cause they're quarky?
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Are we in chat? |
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Boron10
Religion Moderator
USA
1266 Posts |
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H. Humbert
SFN Die Hard
USA
4574 Posts |
Posted - 06/29/2007 : 12:32:03 [Permalink]
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Originally posted by BigPapaSmurf
Edit: heres my new #1 question
Why the hell are quarks the only particles which dont end in 'on'?!?!
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I thought the word originated with James Joyce, but apparently Murray Gell-Mann had already come up with the nonsense word on his own:
| The word was originally coined by Murray Gell-Mann as a nonsense word rhyming with "pork".[1] Later, he found the same word in James Joyce's book Finnegans Wake, where seabirds give "three quarks", akin to three cheers (probably onomatopoetically imitating a seabird call, like "quack" for ducks, as well as making a pun on the relationship between Munster and its provincial capital, Cork) in the passage "Three quarks for Muster Mark!/Sure he hasn't got much of a bark/And sure any he has it's all beside the mark." Further explanation for the use of the word "quark" may be derived from the fact that, at the time, there were only three known quarks in existance. |
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"A man is his own easiest dupe, for what he wishes to be true he generally believes to be true." --Demosthenes
"The first principle is that you must not fool yourself - and you are the easiest person to fool." --Richard P. Feynman
"Face facts with dignity." --found inside a fortune cookie |
| Edited by - H. Humbert on 06/29/2007 12:49:29 |
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Boron10
Religion Moderator
USA
1266 Posts |
 Posted - 06/29/2007 : 12:33:50 [Permalink]
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Originally posted by H. Humbert
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Hah! I beat you by 10 seconds!
Edited to add: Although your response was better than mine.... |
| Edited by - Boron10 on 06/29/2007 12:34:26 |
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H. Humbert
SFN Die Hard
USA
4574 Posts |
Posted - 06/29/2007 : 12:49:52 [Permalink]
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Originally posted by Boron10
Originally posted by H. Humbert
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Hah! I beat you by 10 seconds!
Edited to add: Although your response was better than mine....
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I'll beat ya next time... 
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"A man is his own easiest dupe, for what he wishes to be true he generally believes to be true." --Demosthenes
"The first principle is that you must not fool yourself - and you are the easiest person to fool." --Richard P. Feynman
"Face facts with dignity." --found inside a fortune cookie |
| Edited by - H. Humbert on 06/29/2007 12:50:04 |
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Dr. Mabuse
Septic Fiend
Sweden
9688 Posts |
Posted - 06/29/2007 : 13:35:23 [Permalink]
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What really confuse me is when composite particles like the helium nucleus are classified as bosons and not fermions, as one would expect, since the helium nucleus (or alpha particle if you will...) is just a bunch of fermions clogged together in a bunch.
Suddenly an atomic nucleus isn't classified as matter but a force carrier particle, just like any other photon.
What's all that about?
Edited to add: I mean, suddenly you have a boson forced to obey the Pauli exclusion principle.  |
Dr. Mabuse - "When the going gets tough, the tough get Duct-tape..."
Dr. Mabuse whisper.mp3
"Equivocation is not just a job, for a creationist it's a way of life..." Dr. Mabuse
Support American Troops in Iraq:
Send them unarmed civilians for target practice..
Collateralmurder. |
| Edited by - Dr. Mabuse on 06/29/2007 13:36:48 |
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HalfMooner
Dingaling
Philippines
15831 Posts |
Posted - 06/29/2007 : 15:02:00 [Permalink]
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Dr. Mah'-bu-seh wrote:| I mean, suddenly you have a boson forced to obey the Pauli exclusion principle. |
Indeed, and why should they have to be forced at all? Why can't they simply politely obey Pauli, like good little bosons?
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“Biology is just physics that has begun to smell bad.” —HalfMooner
Here's a link to Moonscape News, and one to its Archive. |
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Dr. Mabuse
Septic Fiend
Sweden
9688 Posts |
Posted - 06/30/2007 : 13:13:11 [Permalink]
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Originally posted by HalfMooner
Dr. Mah'-bu-seh wrote:| I mean, suddenly you have a boson forced to obey the Pauli exclusion principle. |
Indeed, and why should they have to be forced at all? Why can't they simply politely obey Pauli, like good little bosons?
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Because mostly, bosons shouldn't. Bozo...
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Dr. Mabuse - "When the going gets tough, the tough get Duct-tape..."
Dr. Mabuse whisper.mp3
"Equivocation is not just a job, for a creationist it's a way of life..." Dr. Mabuse
Support American Troops in Iraq:
Send them unarmed civilians for target practice..
Collateralmurder. |
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HalfMooner
Dingaling
Philippines
15831 Posts |
Posted - 06/30/2007 : 14:05:27 [Permalink]
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Originally posted by Dr. Mabuse
Because mostly, bosons shouldn't. Bozo...
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I resemble that remark!
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“Biology is just physics that has begun to smell bad.” —HalfMooner
Here's a link to Moonscape News, and one to its Archive. |
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BigPapaSmurf
SFN Die Hard
3192 Posts |
Posted - 07/01/2007 : 08:02:47 [Permalink]
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I think it has to do with their energy level, a normal helium nucleus isnt escaping a plutoniom nucleus at high speeds and has a less ionizing effect.
Not that I have any idea wtf Im taking about though. |
"...things I have neither seen nor experienced nor heard tell of from anybody else; things, what is more, that do not in fact exist and could not ever exist at all. So my readers must not believe a word I say." -Lucian on his book True History
"...They accept such things on faith alone, without any evidence. So if a fraudulent and cunning person who knows how to take advantage of a situation comes among them, he can make himself rich in a short time." -Lucian critical of early Christians c.166 AD From his book, De Morte Peregrini |
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Dr. Mabuse
Septic Fiend
Sweden
9688 Posts |
Posted - 07/01/2007 : 14:42:08 [Permalink]
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| The Wikipedia article ranted about the sum of the spin of particles in it. But since there are even number of particles in a helium nucleus and in a helium atom, then neither of them would have a fraction of an integer number spin. I can't make sense of the explanantion on the Wikipedia page on Bosons. |
Dr. Mabuse - "When the going gets tough, the tough get Duct-tape..."
Dr. Mabuse whisper.mp3
"Equivocation is not just a job, for a creationist it's a way of life..." Dr. Mabuse
Support American Troops in Iraq:
Send them unarmed civilians for target practice..
Collateralmurder. |
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furshur
SFN Regular
USA
1536 Posts |
Posted - 07/02/2007 : 06:01:27 [Permalink]
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| The Wikipedia article ranted about the sum of the spin of particles in it. But since there are even number of particles in a helium nucleus and in a helium atom, then neither of them would have a fraction of an integer number spin. I can't make sense of the explanantion on the Wikipedia page on Bosons. |
Actually the article (that I read) stated that an isotope of He is a fermion, specifically an isotope that has 2 protons an 1 neutron (1/2 + 1/2 + 1/2).
Where as a 'regular' He would be a boson (1/2 + 1/2 + 1/2 + 1/2).
This would be true whether the nucleus is in an atom or is an ionized alpha particle.
At least that's my understanding...
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If I knew then what I know now then I would know more now than I know. |
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Some particle physics questions...
