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OfflineCepheus
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A dichotomy
    #8322957 - 04/24/08 12:18 PM (16 years, 28 days ago)

A meson is a boson (which is part of the hadron family so it is subjected to the strong nuclear force), which consists of a quark and its anti-quark.

Why don't these 2 fundamental particles annihilate each other? Surely the electrostatic attraction between these particles would allow for them to collide with sufficient energy?


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OfflineCepheus
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Re: A dichotomy [Re: Cepheus]
    #8322993 - 04/24/08 12:30 PM (16 years, 28 days ago)

Also, I'm looking for a decent resource for information regarding particle / nuclear physics.. wikipedia is only so useful and a lot of the information present is somewhat incomplete..


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"I only ever hope to reach equilibrium, in Nature's matrix, in line with the meridian" ~ Jehst

:sun: "...and I know that I have to keep breathing, as tomorrow the sun will rise, who knows what the tide will bring?" :sun:

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InvisibleDieCommie


Registered: 12/11/03
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Re: A dichotomy [Re: Cepheus]
    #8324726 - 04/24/08 09:03 PM (16 years, 28 days ago)

They probably exist in a bound state and then decay, kind of like how a positronium 'atom' can exist in a bound state for a short time before decaying. I dont really know.

If you want a decent resource you probably want a used textbook, no?

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OfflineCepheus
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Re: A dichotomy [Re: DieCommie]
    #8410446 - 05/16/08 06:07 PM (16 years, 6 days ago)

Well... I figured it out.

For a particle to annihilate they have to be the exact opposite of the other particle, i.e.; the same mass, the same (yet opposite) charge (i.e 2/3 and -2/3) and have the same (yet opposite) spin.

Also the interaction between the 2 quarks is limited by the gluons :shrug:

so something like a pi meson (up and upbar) doesn't annihilate..


--------------------
"I only ever hope to reach equilibrium, in Nature's matrix, in line with the meridian" ~ Jehst

:sun: "...and I know that I have to keep breathing, as tomorrow the sun will rise, who knows what the tide will bring?" :sun:

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Send any spare spore prints you might have and help the distribution :grin:

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