neutrinos - 2024 ACF Fall - Buzzpoints App

Question

The oscillation of these particles was first detected at the Super Kamiokande observatory. For 10 points each:

[10m] Name these leptons first detected in the Cowan-Reines experiment, more than 20 years after they were hypothesized to exist. The Homestake experiment detected solar examples of these particles.

ANSWER: neutrinos [accept electron neutrinos; accept muon neutrinos; accept tau neutrinos; accept solar neutrinos]

[10e] Neutrinos were first hypothesized by Wolfgang Pauli to explain charge energy conservation in this process. This type of radioactive decay is contrasted with alpha and gamma decay.

ANSWER: beta decay [accept beta minus decay; accept beta plus decay]

[10h] Observation of neutrinoless double beta decay would confirm that neutrinos are this kind of fermion, which are their own antiparticles. These fermions are contrasted with Dirac fermions and named after an Italian physicist.

ANSWER: Majorana fermions

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Summary


2024 ACF Fall at Cornell	fall	Y	10	14.00	100%	30%	10%
2024 ACF Fall at Ohio State	fall	Y	8	18.75	100%	88%	0%
2024 ACF Fall at Washington	fall	Y	1	20.00	100%	100%	0%
2024 ACF Fall at Georgia	fall	Y	12	16.67	100%	58%	8%
2024 ACF Fall at North Carolina	fall	Y	9	17.78	100%	78%	0%
2024 ACF Fall at Claremont Colleges	fall	Y	5	20.00	100%	80%	20%
2024 ACF Fall at Rutgers	fall	Y	8	18.75	100%	75%	13%
2024 ACF Fall at Illinois	fall	Y	9	20.00	100%	67%	33%

Data


Binghamton A	Cornell D	0	10	0	10
Cornell B	Binghamton B	10	10	0	20
Binghamton C	Cornell F	0	10	0	10
Cornell C	RIT B	10	10	10	30
Cornell E	U of Rochester A	0	10	0	10
Cornell A	Cornell G	0	10	0	10
ESF	RIT C	10	10	0	20
Syracuse	RIT A	0	10	0	10
Penn State	U of Rochester B	0	10	0	10
Penn State	U of Rochester B	0	10	0	10
Penn State	U of Rochester B	0	10	0	10
Penn State	U of Rochester B	0	10	0	10
Penn State	U of Rochester B	0	10	0	10
Penn State	U of Rochester B	0	10	0	10
Penn State	U of Rochester B	0	10	0	10
Penn State	U of Rochester B	0	10	0	10
Jefferson County Scholars (DII)	CWRU A (UG)	10	10	0	20
CWRU B (DII)	Ohio State C (DII)	10	10	0	20
Michigan D (UG)	CWRU C (UG)	10	10	0	20
Miami C (DII)	Michigan State B	0	10	0	10
Ohio State A (UG)	Michigan B (UG)	10	10	0	20
Ohio State B (DII)	Michigan C	10	10	0	20
Miami B (UG)	West Virginia A (UG)	10	10	0	20
Michigan A (UG)	West Virginia B (UG)	10	10	0	20
UBC A	UW Wrath	10	10	0	20
Alabama A	Tennessee A	10	10	0	20
Auburn A	South Carolina A	10	10	0	20
Auburn A	South Carolina A	10	10	0	20
Auburn A	South Carolina A	10	10	0	20
Auburn A	South Carolina A	10	10	0	20
Auburn A	South Carolina A	10	10	0	20
Auburn A	South Carolina A	10	10	0	20
Auburn A	South Carolina A	10	10	0	20
Auburn A	South Carolina A	10	10	0	20
Auburn B	Southern	0	10	0	10
Mississippi State A	Auburn C	10	10	0	20
Clemson B	Belmont	0	10	0	10
Clemson A	Georgia Tech B	10	10	0	20
Furman	Georgia A	0	10	0	10
Emory A	Georgia Tech C	0	10	0	10
Tennessee B	Emory Oxford	10	10	10	30
Georgia Tech D	Vanderbilt A	10	10	0	20
South Carolina B	Vanderbilt B	0	10	0	10
Duke A	Appalachian State B	10	10	0	20
UNC D	Duke B	10	10	0	20
Appalachian State A	James Madison A	10	10	0	20
Liberty A	William & Mary	10	10	0	20
Liberty C	UNC B	0	10	0	10
NC State	Liberty B	10	10	0	20
Virginia	Tusculum	10	10	0	20
VCU	Virginia Tech A	10	10	0	20
James Madison B	Virginia Tech B	0	10	0	10
UCLA D	Claremont B	10	10	0	20
Claremont C	UCLA E	10	10	0	20
Claremont A	UCLA A	10	10	10	30
UCLA B	UCSD	10	10	0	20
USC	UCLA C	0	10	0	10
Bard A (UG)	Penn B (DII)	0	10	0	10
Fordham A	Columbia A (UG)	10	10	0	20
Maryland A (DII)	Columbia B	10	10	10	30
NYU A (UG)	Lehigh B (DII)	10	10	0	20
Penn A (DII)	NYU B	0	10	0	10
Maryland B (DII)	Princeton A (UG)	10	10	0	20
Rutgers A (UG)	Columbia J (DII)	10	10	0	20
Rutgers B	Lehigh A (UG)	10	10	0	20
Chicago A	WashU A	10	10	10	30
Chicago B	Notre Dame C	10	10	0	20
Notre Dame B	Illinois D	0	10	0	10
Indiana	WashU B	0	10	0	10
Purdue A	Iowa A	10	10	0	20
Illinois C	Northwestern B	0	10	0	10
Notre Dame A	Northwestern A	10	10	0	20
Purdue B	Iowa B	10	10	10	30
Purdue C	SIUE	10	10	10	30