Second and Third Generations of Proton and Neutron?

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The discussion centers on the theoretical existence of second and third generations of protons and neutrons, composed of higher-generation quarks (charm, strange, top, and bottom). Participants debate the feasibility of these particles, noting their expected instability and rapid decay into first-generation particles, which complicates their detection and study. The concept of an "island of stability" for super-heavy elements is mentioned, suggesting that while some configurations may be stable, the proposed higher-generation baryons would likely not be practically observable. The conversation emphasizes the need for a solid understanding of particle physics and quantum mechanics before proposing new research avenues. Ultimately, while the idea is intriguing, significant theoretical and experimental challenges remain.
  • #31
thanks for all your answers, quantum mechanics and high energy physics is indeed really interesting!

i've just found another article, which reports the initial findings of a nucleus of A=292 and atomic number Z=~122, whose half-life is: t1/2 >= 10^8 y
(just to get an idea what orders of magnitude longer-lived superheavy elements could be...)

http://arxiv.org/abs/0804.3869

so basically some of these new discoveries got me interested in whether it is also possible to extend the periodic table vertically (using higher-generation super-heavy "eka-protons" and "eka-neutrons" as they might be called..) if extension seems more and more plausible horizontally (towards the island of stability)

and I'm just wondering what do you think will be the heaviest particle the LHC could / should find?

and there is also quite a recent discovery of baryon s+s+b

http://www.fnal.gov/pub/presspass/press_releases/Dzero_Omega-sub-b.html

this discovery "brings scientists a step closer to understanding exactly how quarks form matter and to completing the 'periodic table of baryons.' "

and how hard is it to calculate the expected half-live of an undiscovered particle?

what equations do you need to know for that?
 
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  • #32
Petrix said:
thanks for all your answers, quantum mechanics and high energy physics is indeed really interesting!

i've just found another article, which reports the initial findings of a nucleus of A=292 and atomic number Z=~122, whose half-life is: t1/2 >= 10^8 y
(just to get an idea what orders of magnitude longer-lived superheavy elements could be...)

http://arxiv.org/abs/0804.3869

so basically some of these new discoveries got me interested in whether it is also possible to extend the periodic table vertically (using higher-generation super-heavy "eka-protons" and "eka-neutrons" as they might be called..) if extension seems more and more plausible horizontally (towards the island of stability)

and I'm just wondering what do you think will be the heaviest particle the LHC could / should find?

and there is also quite a recent discovery of baryon s+s+b

http://www.fnal.gov/pub/presspass/press_releases/Dzero_Omega-sub-b.html

this discovery "brings scientists a step closer to understanding exactly how quarks form matter and to completing the 'periodic table of baryons.' "

and how hard is it to calculate the expected half-live of an undiscovered particle?

what equations do you need to know for that?

Now I have seen many "articles" arguing for existence of super heavy nucleus, but never seen such in a peer reviewed paper..

now EVERY discovery on finding new properties of hadrons bring scientists closer to an understanding how quarks for matter.. so you should not tell us here how to appreciate new findings in physics. It was a trivial statement of that article...

And if you want to study theoretical hadron physics, you need lots of quantum mechanics, and math and theoretical physics such as quantum field theory and so on. Finally you can start with "Chiral perturbation theory" or "Lattice QCD", once you know the basics.
 
  • #33
tim_lou said:
Indeed, there are tons of different baryons already discovered in the realm of physics. Check out this list:
http://en.wikipedia.org/wiki/List_of_baryons

Or the 2008 Particle Listings of the Particle Data Group, which is about as "official" as things go in particle physics.

Petrix said:
i've just found another article, which reports the initial findings of a nucleus of A=292 and atomic number Z=~122, whose half-life is: t1/2 >= 10^8 y

You need to be careful about new findings posted on arxiv, because they have generally not (yet) been confirmed by other researchers, and have not (yet) gone through peer review. There has apparently been a significant amount of criticism of this finding: Heaviest element claim criticised
 

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