Packet 2: Bonus 13

Gamow (“GAM-ov”) and Teller described parity in this theory via “allowed” and “superallowed” transitions that depend on whether spins are antiparallel or parallel. For 10 points each:
[10h] Name this low-energy effective field theory that predicts that a “heavy particle” will transition from a +1 to –1 state via an axial–vector-type coupling. This theory was a precursor to the weak interaction.
ANSWER: Fermi’s interaction [or Fermi’s four-fermion interaction or Fermi’s theory; prompt on the four-fermion interaction]
[10e] Fermi’s four-fermion interaction explained this phenomenon governed by the weak interaction, in which a neutron converts into a proton, emitting an electron and neutrino.
ANSWER: beta decay [or beta-minus decay; prompt on radioactive decay]
[10m] Fermi’s interaction is generalized to electroweak theory via a completion described by this adjective. “Divergences” described by this adjective occur due to high energies at very short distances.
ANSWER: ultraviolet [or UV; accept ultraviolet divergence or ultraviolet completion]
<Editors, Physics> | K. Playoffs 2 (Editors 2)

HeardPPBE %M %H %
2414.1792%42%8%

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Conversion

TeamOpponentPart 1Part 2Part 3TotalParts
British ColumbiaTexas0101020EM
BrownPurdue0101020EM
BruinStanford B0000
Chicago BNorthwestern B010010E
Columbia BGeorgia Tech B0101020EM
CornellGeorgetown010010E
Georgia Tech ANYU B010010E
Georgia Tech CCambridge0101020EM
HarvardColumbia A1010020HE
Illinois AUCLA0101020EM
Illinois BNorth Carolina010010E
IndianaToronto A10101030HEM
Johns HopkinsPenn State0101020EM
Maryland AChicago A010010E
MinnesotaMIT010010E
Ohio StateRutgers010010E
Stanford AUC Berkeley B0101020EM
Toronto BVanderbilt010010E
UC Berkeley ANorthwestern A0101020EM
UCFSwarthmore0101020EM
VirginiaMichigan0000
Virginia TechNYU A010010E
WashUPittsburgh010010E
WaterlooMaryland B010010E

Summary

TournamentEditionMatchHeardPPBE %M %H %
Main Site2026-04-17✓2414.1792%42%8%