Question

Two photons are released when these particles annihilate with an electron. For 10 points each:
[10m] Name these particles which are released along with an electron neutrino in beta plus decay.
ANSWER: positrons [prompt on anti-electrons]
[10e] Positron emission occurs when beta plus decay occurs inside this object. This center of the atom contains protons and neutrons.
ANSWER: nucleus [or nuclei]
[10h] Positrons are also formed in this process, in which a boson becomes a particle and its antiparticle. The opposite of annihilation, this process is represented by a squiggly line splitting into two straight lines on a Feynman diagram.
ANSWER: pair production
<Physics>

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Summary

2024 ACF Fall at CornellfallY817.50100%63%13%
2024 ACF Fall at Ohio StatefallY820.00100%75%25%
2024 ACF Fall at WashingtonfallY618.33100%83%0%
2024 ACF Fall at GeorgiafallY1113.64100%27%9%
2024 ACF Fall at North CarolinafallY1028.00160%120%0%
2024 ACF Fall at Claremont CollegesfallY520.00100%60%40%
2024 ACF Fall at RutgersfallY820.00100%75%25%
2024 ACF Fall at IllinoisfallY918.89100%78%11%

Data

Tennessee AAuburn A10101030
Tennessee BClemson A010010
Georgia AClemson B010010
Emory AGeorgia Tech B010010
Emory OxfordVanderbilt A1010020
FurmanAlabama A010010
South Carolina AGeorgia Tech A010010
Georgia Tech CAuburn B010010
Georgia Tech DGeorgia Tech E010010
South Carolina BMississippi State A1010020
SouthernBelmont010010