The Goldberger-Treiman discrepancy in SU(3)

dc.creatorGoity, José L.
dc.creatorLewis, Randy
dc.creatorSchvellinger, Martín Alejandro
dc.creatorZhang, Longzhe
dc.date1999
dc.date2021-08-24T18:21:48Z
dc.date.accessioned2023-07-15T02:45:43Z
dc.date.available2023-07-15T02:45:43Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/123315
dc.identifierissn:0370-2693
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7463173
dc.descriptionThe Goldberger-Treiman discrepancy in SU(3) is analyzed in the framework of heavy baryon chiral perturbation theory (HBChPT). It is shown that the discrepancy at leading order is entirely given by counterterms from the order p<SUP>3</SUP> Lagrangian, and that the first subleading corrections are suppressed by two powers in the HBChPT expansion. These subleading corrections include meson-loop contributions as well as counterterms from the order p<SUP>5</SUP> Lagrangian. Some one-loop contributions are calculated and found to be small. Using the three discrepancies (πNN, KNλ and KNΣ) which can be extracted from existing experimental data, the authors find that the HBChPT calculation favors the smaller g(πNN) values obtained in recent partial wave analyses.
dc.descriptionFacultad de Ciencias Exactas
dc.formatapplication/pdf
dc.format115-122
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.subjectFísica
dc.subjectParticle physics
dc.subjectPhysics
dc.subjectPerturbation theory (quantum mechanics)
dc.subjectSymmetry breaking
dc.subjectHeavy baryon chiral perturbation theory
dc.subjectOrder (ring theory)
dc.subjectLagrangian
dc.subjectCurrent algebra
dc.subjectParticle physics
dc.subjectOrder (group theory)
dc.subjectHeavy baryon chiral perturbation theory
dc.subjectLagrangian
dc.titleThe Goldberger-Treiman discrepancy in SU(3)
dc.typeArticulo
dc.typePreprint


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