About: Heavy quark effective theory

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In quantum chromodynamics, heavy quark effective theory (HQET) is an effective field theory describing the physics of heavy (that is, of mass far greater than the QCD scale) quarks. It is used in studying the properties of hadrons containing a single charm or bottom quark. The effective theory was formalised in 1990 by Howard Georgi, Estia Eichten and Christopher Hill, building upon the works of Nathan Isgur and Mark Wise, Voloshin and Shifman, and others.

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rdfs:label	Effektive Theorie schwerer Quarks (de) Heavy quark effective theory (en)
rdfs:comment	Die effektive Theorie schwerer Quarks (engl.heavy quark effective theory or HQET) ist eine effektive Theorie zur Beschreibung von Mesonen und Baryonen mit einem schweren Quark. Als schwere Quarks werden dabei das b- und c-Quark im Unterschied zu den leichten u-, d- und s-Quark bezeichnet; t-Quarks werden dabei meist nicht berücksichtigt, da diese deutlich schwerer sind. (de) In quantum chromodynamics, heavy quark effective theory (HQET) is an effective field theory describing the physics of heavy (that is, of mass far greater than the QCD scale) quarks. It is used in studying the properties of hadrons containing a single charm or bottom quark. The effective theory was formalised in 1990 by Howard Georgi, Estia Eichten and Christopher Hill, building upon the works of Nathan Isgur and Mark Wise, Voloshin and Shifman, and others. (en)
dcterms:subject	Quantum chromodynamics
Wikipage page ID	54313516 (xsd:integer)
Wikipage revision ID	1103135087 (xsd:integer)
Link from a Wikipage to another Wikipage	QCD scale Quark Bottom quark Howard Georgi Perturbation theory (quantum mechanics) Up quark Quantum chromodynamics Estia J. Eichten Christopher T. Hill Gluon Strange quark Mark B. Wise Top quark Strong interaction Down quark Quantum chromodynamics Hadron Charm quark Effective field theory Mikhail Shifman Mikhail Voloshin Nathan Isgur Non-perturbative
sameAs	Heavy quark effective theory Heavy quark effective theory Heavy quark effective theory
dbp:wikiPageUsesTemplate	dbt:Cite_book dbt:Cite_journal dbt:Particle-stub dbt:Reflist dbt:Short_description
has abstract	Die effektive Theorie schwerer Quarks (engl.heavy quark effective theory or HQET) ist eine effektive Theorie zur Beschreibung von Mesonen und Baryonen mit einem schweren Quark. Als schwere Quarks werden dabei das b- und c-Quark im Unterschied zu den leichten u-, d- und s-Quark bezeichnet; t-Quarks werden dabei meist nicht berücksichtigt, da diese deutlich schwerer sind. (de) In quantum chromodynamics, heavy quark effective theory (HQET) is an effective field theory describing the physics of heavy (that is, of mass far greater than the QCD scale) quarks. It is used in studying the properties of hadrons containing a single charm or bottom quark. The effective theory was formalised in 1990 by Howard Georgi, Estia Eichten and Christopher Hill, building upon the works of Nathan Isgur and Mark Wise, Voloshin and Shifman, and others. Quantum chromodynamics (QCD) is the theory of strong force, through which quarks and gluons interact. HQET is the limit of QCD with the quark mass taken to infinity while its four-velocity is held fixed. This approximation enables non-perturbative (in the strong interaction coupling) treatment of quarks that are much heavier than the QCD mass scale. The mass scale is of order 200 MeV. Hence the heavy quarks include charm, bottom and top quarks, whereas up, down and strange quarks are considered light. Since the top quark is extremely short-lived, only the charm and bottom quarks are of significant interest to HQET, of which only the latter has mass sufficiently high that the effective theory can be applied without major perturbative corrections. (en)
prov:wasDerivedFrom	wikipedia-en:Heavy_quark_effective_theory?oldid=1103135087&ns=0
page length (characters) of wiki page	4528 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Heavy_quark_effective_theory
is Link from a Wikipage to another Wikipage of	Howard Georgi Mark B. Wise Faheem Hussain Quantum chromodynamics Effective field theory Feynman parametrization HQEFT HQET Sakurai Prize Nathan Isgur Heavy quark effective field theory
is Wikipage redirect of	HQEFT HQET Heavy quark effective field theory
is known for of	Howard Georgi Mark B. Wise
is known for of	Howard Georgi Mark B. Wise
is foaf:primaryTopic of	wikipedia-en:Heavy_quark_effective_theory

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