Round 6: Tossup 11

An infrared-safe jet clustering algorithm invented by Matteo Cacciari takes the reciprocal of a component of this quantity. A parton distribution function gives the probability density of finding a parton at a given value of a component of this quantity. The transverse component of this quantity is large for “hard” interactions like hadronization and small for “soft” interactions. The scattering vector q represents the transfer of this quantity, where this quantity equals Planck’s constant times wavevector. In the analysis of scattering (10[1])problems, the center of mass frame is often generalized (10[1])by an inertial frame named the center of this quantity. Both elastic and inelastic collisions obey this quantity’s conservation (10[1])law. (10[1])For 10 points, name this quantity equal to mass times velocity. ■END■

ANSWER: (linear) momentum [accept transverse momentum; accept longitudinal momentum; accept (longitudinal or transverse) momentum fraction; accept momentum transfer; accept center of momentum frame; accept conservation of momentum; prompt on p or kt or pt or PT or P1 or x by asking “what quantity does that represent?”; prompt on anti-kt algorithm; reject “angular momentum”]
<GC, Physics> | Packet F - Chicago C, McGill C, WashU A, Chicago B
= Average correct buzzpoint

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Buzzes


Summary

TournamentEditionMatchHeardConv. %Neg %Avg. Buzz
California (North)Main Site3100%33%92.00
California (South)Main Site4100%0%98.75
CanadaMain Site1090%30%97.11
FloridaMain Site3100%33%111.67
Great LakesMain Site5100%20%99.80
Lower Mid-AtlanticMain Site9100%0%107.00
MidwestMain Site8100%25%94.25
NortheastMain Site6100%0%95.50
OverflowMain Site4100%0%96.50
South CentralMain Site2100%0%103.50
SoutheastMain Site7100%14%110.14
UKMain Site12100%33%93.25
Upper Mid-AtlanticMain Site8100%25%96.88
Upstate NYMain Site475%50%106.33