0000000000187432

AUTHOR

Jürg Gasser

showing 2 related works from this author

Integrating out strange quarks in ChPT

2007

We study three flavour chiral perturbation theory in a limit where the strange quark mass is much larger than the external momenta and the up and down quark masses, and where the external fields are those of two-flavour chiral perturbation theory. In this case, the theory reduces to the one of SU(2)_L x SU(2)_R. Through this reduction, one can work out the strange quark mass dependence of the LECs in the two-flavour case. We present the pertinent relations at two-loop order for F,B and l_i.

PhysicsNuclear and High Energy PhysicsStrange quarkParticle physicsChiral perturbation theory010308 nuclear & particles physicsHigh Energy Physics::LatticeFlavourNuclear TheoryHigh Energy Physics::PhenomenologyDown quarkFOS: Physical sciences01 natural sciencesHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Quark star0103 physical sciencesUp quarkHigh Energy Physics::ExperimentLimit (mathematics)Perturbation theory (quantum mechanics)010306 general physics
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The role of resonances in chiral perturbation theory

1989

32 páginas, 2 figuras, 5 tablas.-- BUTP-88-18 ; CERN-TH-5185-88 ; CPT-2158 ; UWTHPH-1988-29.

Chiral anomalyPhysicsNuclear and High Energy PhysicsChiral perturbation theoryMesonHigh Energy Physics::LatticeNuclear TheoryHigh Energy Physics::PhenomenologyFísicaVector meson dominancePseudoscalar mesonPionQuantum electrodynamicsNambu–Jona-Lasinio modelHigh Energy Physics::ExperimentChiral symmetry breakingParticle Physics - Theory
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