Particles: X(3872) and Z(4430) ?


by Openeye
Tags: particles, x3872, z4430
Openeye
Openeye is offline
#1
Feb10-11, 03:53 PM
P: 29
Does anyone have more info about this?

http://en.wikipedia.org/wiki/X(3872)
http://en.wikipedia.org/wiki/Z(4430)

Are these not considered fundamental or what makes them so different?



----
Additional info requested posted 'seperately' so as not to contaminate the thread with SIDE INFORMATION. If you are addressing this side info please PM me so we can keep this thread about X(3872) and Z(4430) and not supposedly 're-open' the thread that's CLOSED. (I don't get it... how can _I_ (a non-moderator) re-open a thread that is closed/locked?)

Also, I originally posted my 'other' (no link to it) thread into quantum physics forum, but it was moved to this general physics forum. If I am asking a quantum physics question here, sorry, I am only posting here because I figure it would end up back here. Feel free to move it as necessary.


Thanks.
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Drakkith
Drakkith is offline
#2
Feb10-11, 05:40 PM
PF Gold
Drakkith's Avatar
P: 11,040
Looks to me like we don't have enough evidence to make a determination on what exactly they are. However, it does seem that they are made of quarks and are therefore not fundamental.


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