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Author Topic:   Missing Matter
RAZD
Member (Idle past 1431 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 13 of 104 (481819)
09-12-2008 7:24 PM
Reply to: Message 12 by cavediver
09-12-2008 7:26 AM


Re: Dark matter particles
I would think that it also would have to be inert (not attracted to other particles), only combine with other particles with great energy (= collider energy) - perhaps only with other dm particles - and not charged.
As such I would expect it to be difficult identify and to contain.
We've seen where atomic particles (protons, electrons and neutrons, etc) have been broken apart into sub-atomic particles, quarks and leptons (wiki: a proton is made up of two "up quarks" and one "down quark", yielding a net charge of +1, while a neutron contains one "up quark" and two "down quarks", yielding a net charge of 0), that explain the charges and attractions of the atomic particles.
Do you expect the quarks and leptons to be broken down into sub-sub-atomic particles?
Enjoy

we are limited in our ability to understand
by our ability to understand
Rebel American Zen Deist
... to learn ... to think ... to live ... to laugh ...
to share.


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This message is a reply to:
 Message 12 by cavediver, posted 09-12-2008 7:26 AM cavediver has replied

Replies to this message:
 Message 14 by Son Goku, posted 09-13-2008 6:40 AM RAZD has seen this message but not replied
 Message 17 by cavediver, posted 09-13-2008 8:01 AM RAZD has replied

  
RAZD
Member (Idle past 1431 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 23 of 104 (483197)
09-20-2008 5:13 PM
Reply to: Message 17 by cavediver
09-13-2008 8:01 AM


Re: Dark matter particles
Thanks Cavediver and Son Goku, for, um, fielding that question ...
But they can be revealed by the *missing* characteristics following a collision. Unfortunately, this is also how we can detect for extra dimensions, so it's not an easy task differentiating all of these possibilities. But with some good luck it can be done...
See SG's earlier post.
Son Goku writes:
Message 14: The first being and I'm not sure how to say this, the proton is not really "made" of three quarks. Rather the proton is a state produced by the interaction of about eleven different quantum fields. Three of those fields, if they didn't interact with the others, that is if they were free, would have excitations which we call quarks. So those fields are called the quark fields. However since the fields do interact, this picture isn't accurate and the fields never possess those excitations we call the quark particle
Virtual particles? So is the proton a particle or the intersection of these fields: wherever they intersect in the right pattern there be protons? I thought Feynman demonstrated that particles were the best explanation?
And is this how we get to multi-dimensions with string theory?
Thanks.

we are limited in our ability to understand
by our ability to understand
Rebel American Zen Deist
... to learn ... to think ... to live ... to laugh ...
to share.


• • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •

This message is a reply to:
 Message 17 by cavediver, posted 09-13-2008 8:01 AM cavediver has not replied

Replies to this message:
 Message 24 by Son Goku, posted 09-21-2008 7:45 AM RAZD has seen this message but not replied

  
RAZD
Member (Idle past 1431 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004


Message 30 of 104 (483360)
09-21-2008 6:46 PM
Reply to: Message 29 by cavediver
09-21-2008 6:14 PM


Re: Thanks to both Son and Cave
How familiar are you with Lagrangian mechanics?
I used to be very good at it ... 40 years ago. Not to brag, but I aced my math classes at Duke (could have majored), however, it has been ages since those gray cells were exercised.
So be gentle ... (I do still have my math books though so that should help)
Enjoy.

we are limited in our ability to understand
by our ability to understand
Rebel American Zen Deist
... to learn ... to think ... to live ... to laugh ...
to share.


• • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •

This message is a reply to:
 Message 29 by cavediver, posted 09-21-2008 6:14 PM cavediver has not replied

  
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