Question
This construct is parametrized by three mixing angles and a delta term corresponding to a phase angle due to charge-parity violations. For ten points each:
[10h] Name this construct, which under CPT symmetry, is identical for neutrinos and antineutrinos. This mathematical construct parametrizes a unitary transformation between two different eigenstate bases.
ANSWER: PMNS matrix [accept Pontecorvo–Maki–Nakagawa–Sakata matrix; prompt on matrix]
[10e] Before the discovery of neutrino oscillations, neutrinos were thought to have a value of zero for this quantity, which according to Newton’s second law, is equal to force divided by acceleration.
ANSWER: mass [accept zero mass; accept massless]
[10m] The aforementioned symmetry of the PMNS matrix refers to charge conjugation, parity transformation, and this type of symmetry. Due to a gradual increase in entropy, the macroscopic universe does [emphasize] NOT have this symmetry.
ANSWER: time-reversal symmetry [prompt on T-symmetry]
<Ezra Santos, Physics>
Summary
| 2024 Penn Bowl Chicago | 11/02/2024 | Y | 8 | 17.50 | 100% | 50% | 25% |
Data
| Notre Dame A | Chicago B | 0 | 10 | 0 | 10 |
| Chicago A | Illinois A | 0 | 10 | 10 | 20 |
| Illinois B | Northwestern A | 10 | 10 | 10 | 30 |
| WUSTL | Indiana A | 10 | 10 | 10 | 30 |
| Notre Dame B | Minnesota | 0 | 10 | 0 | 10 |
| Illinois C | Northwestern B | 0 | 10 | 0 | 10 |
| Indiana B | Notre Dame C | 0 | 10 | 0 | 10 |
| Purdue | SIUE | 0 | 10 | 10 | 20 |