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snorkack
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A deuteron is a bound hexaquark. Since both triquarks have severally masses of about 940 MeV, the reduced mass of a deuteron is under 470 MeV.
Deuteron is bound... but only feebly. It has only one bound state: ground state orthodeuteron. All excited states of orthodeuteron are unbound.
Paradeuteron has slightly weaker attraction, which is enough for paradeuteron to be unbound and only a virtual state.
Ortho-dineutron and ortho-diproton ground states are banned by Pauli principle. Excited states are unbound for same reasons as orthodeuteron excited states - and para-diproton and para-dineutron unbound like paradeuteron.
Now, it seems that Λ hyperon attraction to nucleons or groups of nucleons is somewhat weaker than attraction of nucleons to each other. Although the reduced mass of a Λ-N nucleus would be in the order of 510 MeV, about 45 MeV bigger than the 470 MeV of deuteron, this is not enough to bind either Λp or Λn.
How is the case with heavier strange only hyperons? Ω has mass of 1672 MeV, so reduced mass over 830 MeV for diomega. And while all baryons are fermions restricted by Pauli principle, Ω has spin 3/2, not 1/2. What are the possible spin combinations of two otherwise indistinguishable particles of spin 3/2, and which of them stay allowed when they have other quantum numbers identical? How strong is the strong force between two omegas, and which states of diomega (if any) are bound against zero point motion?
When hyperons are not only strange, reduced mass grows further. Especially when charm minus beauty reaches 4 or more - because then it is not an option to expel a light baryon with neither. Even a feeble strong attraction could suffice to bind a nucleus with beauty of -6, because the baryons have rest mass over 17 GeV each.
Also, how much reduced mass do mesonuclei need?
Mesons have two quarks, not three. Meson-baryon and meson-meson strong attraction might thus be feebler than baryon-baryon strong force, and need higher reduced mass to overcome zero point motion.
But if both mesons are beautiful, would its huge reduced mass nevertheless suffice to create a bound mesonucleus?
Deuteron is bound... but only feebly. It has only one bound state: ground state orthodeuteron. All excited states of orthodeuteron are unbound.
Paradeuteron has slightly weaker attraction, which is enough for paradeuteron to be unbound and only a virtual state.
Ortho-dineutron and ortho-diproton ground states are banned by Pauli principle. Excited states are unbound for same reasons as orthodeuteron excited states - and para-diproton and para-dineutron unbound like paradeuteron.
Now, it seems that Λ hyperon attraction to nucleons or groups of nucleons is somewhat weaker than attraction of nucleons to each other. Although the reduced mass of a Λ-N nucleus would be in the order of 510 MeV, about 45 MeV bigger than the 470 MeV of deuteron, this is not enough to bind either Λp or Λn.
How is the case with heavier strange only hyperons? Ω has mass of 1672 MeV, so reduced mass over 830 MeV for diomega. And while all baryons are fermions restricted by Pauli principle, Ω has spin 3/2, not 1/2. What are the possible spin combinations of two otherwise indistinguishable particles of spin 3/2, and which of them stay allowed when they have other quantum numbers identical? How strong is the strong force between two omegas, and which states of diomega (if any) are bound against zero point motion?
When hyperons are not only strange, reduced mass grows further. Especially when charm minus beauty reaches 4 or more - because then it is not an option to expel a light baryon with neither. Even a feeble strong attraction could suffice to bind a nucleus with beauty of -6, because the baryons have rest mass over 17 GeV each.
Also, how much reduced mass do mesonuclei need?
Mesons have two quarks, not three. Meson-baryon and meson-meson strong attraction might thus be feebler than baryon-baryon strong force, and need higher reduced mass to overcome zero point motion.
But if both mesons are beautiful, would its huge reduced mass nevertheless suffice to create a bound mesonucleus?