axion - 2024 ACF Winter - Buzzpoints App

Question

The ADMX and BREAD experiments aim to detect this particle by using a strong magnetic field to convert it to photons. For 10 points each:

[10h] Name this hypothetical light dark-matter particle, whose existence was proposed as a consequence of the Peccei–Quinn (“pet-CHAY kwin”) mechanism by Frank Wilczek and Steven Weinberg.

ANSWER: axion [accept higglet; prompt on weakly interacting sub-eV particle or WISP]

[10m] Wilczek named the axion after a detergent brand because it “cleaned up” a problem named for charge conjugation symmetry and this symmetry. Chien-Shiung Wu showed that the weak force violates this symmetry.

ANSWER: parity symmetry [or P-symmetry; accept CP-symmetry; accept, but DO NOT REVEAL, strong-CP problem]

[10e] The Peccei–Quinn mechanism that produces the axion attempts to explain why this fundamental force seemingly does not exhibit CP-violation. This force holds the atomic nucleus together.

ANSWER: strong force [or strong interaction or strong nuclear force]

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Summary


2024 ACF Winter at UC Berkeley	2024-11-16	Y	3	23.33	100%	67%	67%
2024 ACF Winter at Lehigh	2024-11-16	Y	6	20.00	100%	67%	33%
2024 ACF Winter at Northwestern	2024-11-16	Y	9	18.89	100%	67%	22%
2024 ACF Winter at Ohio State	2024-11-16	Y	7	18.57	100%	71%	14%
2024 ACF Winter at Online	2024-11-16	Y	8	16.25	100%	63%	0%
2024 ACF Winter at UBC	2024-11-16	Y	3	16.67	100%	67%	0%
2024 ACF Winter at Central Florida	2024-11-16	Y	5	14.00	100%	40%	0%
2024 ACF Winter at Oxford	2024-11-16	Y	11	18.18	91%	64%	27%

Data


Berkeley A	Berkeley C	10	10	10	30
Stanford A	Berkeley B	0	0	10	10
Stanford M	Stanford L	10	10	10	30
Rowan A	Haverford A	0	0	10	10
Columbia A	Johns Hopkins A	10	10	10	30
Penn B	Penn State B	0	0	10	10
Penn State A	Penn A	0	10	10	20
Lehigh A	Rutgers C	10	10	10	30
Notre Dame	WashU D	0	0	10	10
Purdue A	UIUC B	10	10	10	30
Indiana B	Purdue D	0	10	10	20
SIUE A	UChicago B	0	10	10	20
UChicago D	UIUC D	0	0	10	10
Indiana A	UIUC A	10	10	10	30
UIUC C	UChicago A	0	10	10	20
UChicago C	WashU B	0	10	10	20
WashU C	Northwestern A	0	0	10	10
CWRU B (UG)	CWRU D (DII)	0	0	10	10
Michigan C (UG)	Kenyon B (DII)	0	0	10	10
Michigan State B (UG)	Kenyon A (UG)	0	10	10	20
Michigan State C (UG)	CWRU A (UG)	0	10	10	20
Ohio State B (DII)	Pitt B (UG)	0	10	10	20
Michigan B	Ohio State C (DII)	10	10	10	30
Pitt A	Michigan D	0	10	10	20
Arkansas	McGill E	0	0	10	10
NYU A	Central Oklahoma	0	10	10	20
Mississippi State	Vassar B	0	10	10	20
Texas B	Missouri	0	0	10	10
WUSTL A	Ole Miss	0	10	10	20
Texas A	NYU B	0	10	10	20
Texas C	Texas D	0	0	10	10
Vassar A	Oregon State	0	10	10	20
UW B	UBC A	0	10	10	20
Alberta	UBC B	0	0	10	10
UW A	SFU	0	10	10	20
UCF B	Florida State University A	0	0	10	10
UF B	UF A	0	10	10	20
UF C	UCF A	0	0	10	10
UF D	Florida Tech B	0	0	10	10
UF E	Florida Tech A	0	10	10	20
Oxford B	Birmingham	0	0	10	10
Imperial A	Bristol B	10	10	10	30
Cambridge B	Southampton B	0	10	10	20
Cambridge D	Durham B	0	10	10	20
Durham A	Edinburgh	10	0	10	20
Warwick B	Imperial B	0	0	10	10
LSE B	Cambridge C	0	0	10	10
Southampton A	Southampton B	0	10	10	20
Southampton A	Southampton B	0	10	0	10
Southampton A	LSE A	0	10	10	20
Southampton A	LSE A	0	10	0	10
Southampton A	Southampton B	0	10	10	20
Southampton A	Southampton B	0	10	0	10
Southampton A	LSE A	0	10	10	20
Southampton A	LSE A	0	10	0	10
Oxford A	Team 1	10	10	10	30
Warwick A	Bristol A	0	10	10	20
Columbia B	Bard A	0	10	10	20