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In 2020, Bordone et al. found that experimental values for these quantities for certain anti-B meson decays are over four standard deviations from theoretical values. For 10 points each:
[10h] Name these quantities that, for given particles, yield the proportion that follows a certain decay path.
ANSWER: branching fractions [or branching ratios]
[10e] The discrepancies affect the branching fractions for anti-B mesons containing either strange antiquarks or the antiparticles of these quarks. This first-generation quark has a charge of minus one-third e, and two of them are found in a neutron.
ANSWER: down quarks [or d quarks]
[10m] Some of the experimental data for the branching fractions was taken from this US accelerator. In 1995, this accelerator, which was at that time the highest-energy accelerator ever built, was used to discover the top quark.
ANSWER: Tevatron [reject “Fermilab”; reject “Fermi National Accelerator Laboratory”]
<Physics>
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TeamOpponentPart 1Part 2Part 3TotalParts
Arizona StateLSE0101020EM
Chicago AWaterloo A1010020HE
Chicago BToronto B0101020EM
Columbia ARutgers0101020EM
Cornell AMinnesota1010020HE
HarvardGeorgia Tech010010E
Iowa StateToronto C0000
MITJohns Hopkins010010E
MarylandMichigan010010E
NYUYale0101020EM
North Carolina AToronto A0101020EM
Ohio StateIllinois B0101020EM
OttawaWUSTL B010010E
Penn StateBritish Columbia0101020EM
RITCornell B0000
StanfordIndiana100010H
TexasVirginia Tech0101020EM
UC Berkeley ANorthwestern0101020EM
UC Berkeley BFlorida001010M
UCFColumbia B0101020EM
VanderbiltNorth Carolina B010010E
WUSTL AIllinois A010010E
Waterloo BGeorgia State010010E
Winona StateVirginia001010M

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2025 ACF NationalsYes2414.1779%50%13%