Packet 9: Tossup 12

A background of these particles has its temperature related by a factor (15[2])of “the cube root of four-elevenths” to the temperature (15[1])of the CMB and is made up of their “relic” type, which decoupled a second after the (-5[1])Big Bang. (15[1])SNEWS detects these (15[1])dominant particles (15[1])released (15[1])in supernovas. (15[3])A prominent (15[3])dark matter (15[1])candidate (15[2])is (15[1])the “sterile” (15[1])type of these (-5[1])particles. (15[4])These particles’ (*) solar flux was only one-third (10[1])of the initially predicted value (10[2])due to their flavor (10[1])oscillations. (10[1]-5[1])Super-Kamiokande (10[1]-5[1])detects these particles, (10[1])which along with a positron is emitted in beta-plus decay. (-5[1])Electron, muon, and tau (10[1])are varieties of, for 10 points, what near-massless, (10[1])neutrally charged particles? ■END■ (10[3])

Back to tossups

Buzzes

Summary