charm quark

E674925

The charm quark is a second-generation elementary particle with electric charge +2/3, playing a key role in the structure of hadrons and in understanding flavor physics and weak interactions in the Standard Model.

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Statements (65)

Predicate Object
instanceOf elementary particle
quark
second-generation quark
antiparticle anticharm quark
associatedBaryon Λ_c baryon NERFINISHED
Ξ_c baryon
Ω_c baryon
associatedMeson D meson NERFINISHED
D_s meson NERFINISHED
J/ψ meson NERFINISHED
baryonNumber +1/3
belongsToFamily up-type quarks
canTransformInto bottom quark (via higher-order processes)
down quark
strange quark
CKMMatrixElement V_cb
V_cd NERFINISHED
V_cs
colorCharge quantum chromodynamics color charge
confinementProperty cannot be isolated as a free particle at low energies
decaysVia W boson emission
charged weak current
discoveredBy Burton Richter NERFINISHED
Samuel C. C. Ting NERFINISHED
discoveryEvent November Revolution NERFINISHED
discoveryFacility Brookhaven National Laboratory NERFINISHED
SLAC NERFINISHED
discoveryMethod electron–positron annihilation experiments
discoveryYear 1974
electricCharge +2/3 e
0.6666667 e
flavorQuantumNumber charmness +1
formsBoundStatesWith anticharm quark
bottom quark
charm quark
down quark
strange quark NERFINISHED
up quark
formsHadrons charmed baryons
charmed mesons NERFINISHED
gaugeGroupRepresentation doublet of SU(2)_L (with strange quark)
triplet of SU(3)_color
generation second generation
helicityStates left-handed
right-handed
interaction electromagnetic interaction
gravitational interaction
strong interaction
weak interaction
leptonNumber 0
mass about 1.27 GeV/c^2
massScheme MS-bar scheme at 2 GeV
namedAfter charm quantum number
partOf Standard Model of particle physics NERFINISHED
second quark generation
PDGParticleID 4
roleInCosmology relevant in early-universe high-temperature plasma
roleInPhysics CP violation studies
flavor physics
tests of the Standard Model
spin 1/2
statistics Fermi–Dirac statistics NERFINISHED
symbol c
weakHypercharge +1/3 (left-handed doublet)
weakIsospin +1/2 (left-handed component)

Referenced by (1)

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