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Checking systematically the list of possible combinations of di- and triquarks...

There are 5 quarks that can form hadrons.

Diquarks formed of alike quark and antiquark are all short-lived:

This leaves 10 pairs of unlike quark and antiquark:

1 pair of charged pions:

1) π

2 pairs of kaons:

charged:

2) K

neutral, with two different lifetimes:

3) K

K

3 pairs of D mesons:

2 charged:

4) D

5) D

1 neutral, oddly unlike kaon a single lifetime:

6) D

4 pairs of B mesons:

2 charged:

7) B

8) B

2 neutral, each also a single lifetime:

9) B

10) B

Note one significant observation: all 10 unlike diquarks predicted by combinations have been seen and described with mass and lifetime.

There are 5 quarks that can form hadrons.

Diquarks formed of alike quark and antiquark are all short-lived:

*π*^{0}- 135,0 MeV; 0,085 fs; the rest even shorterThis leaves 10 pairs of unlike quark and antiquark:

1 pair of charged pions:

1) π

^{-}- 139,6 MeV; 26 000 000 fs2 pairs of kaons:

charged:

2) K

^{-}- 493,7 MeV; 12 400 000 fsneutral, with two different lifetimes:

3) K

_{L}^{0}- 497,6 MeV; 51 100 000 fsK

_{S}^{0}- 497,6 MeV; 89 500 fs3 pairs of D mesons:

2 charged:

4) D

^{-}- 1869,6 MeV; 1040 fs5) D

_{s}^{-}- 1968,3 MeV; 500 fs1 neutral, oddly unlike kaon a single lifetime:

6) D

^{0}1864,8 MeV; 410 fs4 pairs of B mesons:

2 charged:

7) B

^{-}5279,3 MeV; 1640 fs8) B

_{c}^{-}6275,6 MeV; 450 fs2 neutral, each also a single lifetime:

9) B

^{0}5279,6 MeV; 1520 fs10) B

_{s}^{0}5366,8 MeV; 1510 fsNote one significant observation: all 10 unlike diquarks predicted by combinations have been seen and described with mass and lifetime.

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