Particle physics/Talk

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I need some help here. where does antimatter exactly fit in here? I want to explain the physics, but need some help

Mike Dill

Every particle (sort of) has an antiparticle. All the leptons/quarks/neutrinos you have mentioned have antileptons/quarks/neutrinos (indicated by a bar above the letter). They are almost identical but have one opposite feature, usually charge (electron/positron). I hope this is what you meant --sodium.

Always charge, not just electromagnetic but weak and color as well, plus spin. Whether gravitational mass is reversed is unknown.

Someplace I read about "Dark Matter" presumed to be nearly 70%(don't hold me to this) of all matter in the Universe. anyone know about this ? ~BF

Sure. I'll put some notes on Dark matter, and someone else can add to them later.

Note there's already a (short) Dark matter problem article. -- DrBob

Aaa, too late. That's what happens when articles have non-obvious names without redirects set up. I think the content has been entirely subsumed, so I'll just redirect it.

I'd like to see a list of every known subatomic particle... does such a list exist anywhere? Who decides on the names given to particles? Is there an official nomenclature decided by some body, like the IAU does for astronomical bodies or IUPAC for chemical compounds? -- SJK

your question has been posted to sci.physics.particle - MMGB :-)
All known particles, or all elementary particles? The length of the list would change by about two orders of magnitude depending on which you mean... -- Xaonon

I created a image file of all the elementary particles for this page and uploaded it to my personal website. If you think it is worthwhile adding to the Wikipedia then say so, or if you think changes are necessary, say that too. - MMGB

I'll let the real physicists comment on this, but I am wondering about some things: firstly, why is the colour charge 0 for some particles, but blank for others? What is the difference between 0 or blank? Also, why are we giving values 0 or 3 for colour charge? They aren't colour charges -- they are the number of different colour charges the particle can have. Wouldn't it be better to say something like "RGB" or blank? Or mark them as strongly interacting or not?
Secondly, the diagram gives the impression that the gluon and photon are somehow connected with quarks, and the W and Z bosons with leptons. I understand why that is so for gluons, W and Z bosons, but why is the photon linked with the quarks? -- SJK

--- Changed the sentence about non-linear waves. Particle-wave duality is something that needs its own entry, but the change was necessary because particles are *NOT* non-linear waves. They are perfectly linear (at least when they are a wave) -- Chenyu