heavy quark effective theory

E557537

effective field theory theoretical framework in particle physics

Heavy quark effective theory is a framework in particle physics that simplifies the study of hadrons containing a single heavy quark by exploiting symmetries that emerge in the limit of very large quark mass.

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All labels observed (1)

Label	Occurrences
heavy quark effective theory canonical	1

Statements (48)

Predicate	Object
instanceOf	effective field theory ⓘ theoretical framework in particle physics ⓘ
appliesTo	hadrons containing a single heavy quark ⓘ heavy baryons ⓘ heavy–light mesons ⓘ
appliesToQuark	bottom quark ⓘ charm quark ⓘ top quark in principle ⓘ
assumes	heavy quark mass much larger than QCD scale ⓘ heavy quark nearly on-shell ⓘ residual momentum of heavy quark small compared to its mass ⓘ
basedOn	quantum chromodynamics NERFINISHED ⓘ
contains	1/m_Q suppressed chromomagnetic operator ⓘ 1/m_Q suppressed kinetic operator ⓘ leading-order spin–flavor symmetric Lagrangian ⓘ
describes	dynamics of a heavy quark moving with fixed four-velocity ⓘ
developedBy	Howard Georgi NERFINISHED ⓘ Mark B. Wise NERFINISHED ⓘ Nathan Isgur NERFINISHED ⓘ
developedIn	early 1990s ⓘ late 1980s ⓘ
expandsIn	1/m_Q expansion ⓘ inverse powers of heavy quark mass ⓘ
exploitsSymmetry	heavy quark flavor symmetry ⓘ heavy quark spin symmetry ⓘ
feature	decoupling of heavy quark spin from light degrees of freedom ⓘ degeneracy of hadron states differing only by heavy quark spin in infinite mass limit ⓘ separation of short-distance and long-distance physics ⓘ
field	particle physics ⓘ
goal	make heavy hadron observables systematically computable in 1/m_Q expansion ⓘ simplify calculations involving heavy hadrons ⓘ
hasSymmetryBreaking	1/m_Q corrections breaking spin–flavor symmetry ⓘ
introduces	velocity-dependent heavy quark field ⓘ
isLowEnergyLimitOf	quantum chromodynamics for heavy quarks ⓘ
relatedTo	QCD sum rules NERFINISHED ⓘ lattice QCD ⓘ operator product expansion ⓘ soft-collinear effective theory NERFINISHED ⓘ
usedFor	calculation of form factors in semileptonic decays ⓘ description of B meson decays ⓘ description of D meson decays ⓘ extraction of CKM matrix elements ⓘ parameterization of nonperturbative QCD effects for heavy hadrons ⓘ study of heavy baryon spectroscopy ⓘ
usedIn	heavy flavor physics ⓘ phenomenology of B factories ⓘ precision tests of the Standard Model ⓘ
usesLimit	infinite heavy quark mass limit ⓘ

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

Howard Georgi → knownFor → heavy quark effective theory ⓘ