Question
By considering representations of SU(3), a 1971 paper by Gross and Wilczek predicted that there can be at most 16 of these properties for QCD to be asymptotically free. For 10 points each:
[10e] Name these properties that distinguish different varieties of quarks.
ANSWER: flavors
[10m] The same result demonstrated that there could be at most 2 fermions that are these representations of SU(3). Mesons containing only up, down, or strange quarks form this adjoint representation of SU(3).
ANSWER: octets [accept eight; accept eightfold way]
[10h] At low energies, QCD has a chirally broken approximate SU(2) symmetry, whose pseudo-Nambu–Goldstone modes are these particles, explaining their low mass.
ANSWER: pions
<DC, Physics>
Summary
| 2024 Chicago Open | 07/28/2024 | Y | 15 | 9.33 | 60% | 27% | 7% |
Data
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| The Oldest Men in the World | NJTRANSit (and bobby, i guess) | 10 | 0 | 10 | 20 |
| Punished "Venom" BHSU | BHSU B | 10 | 0 | 0 | 10 |
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