Resummed one-loop determination of the phase boundary of the SU(3)R×SU(3)L linear sigma model in the (mπ-mK) plane

T. Herpay, Zs Szép

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Complete one-loop parametrization of the linear sigma model is performed and the phase boundary between first order and crossover transition regions of the mπ-mK-plane is determined using the optimized perturbation theory as a resummation tool of perturbative series. Away from the physical point the parameters of the model were determined by making use of chiral perturbation theory. Along the diagonal mπ=mK of the mass plane we estimate mπc=110±20MeV. The location of the tricritical point on the mπ=0 axis is estimated in the interval mKTCP (17001850)MeV.

Original languageEnglish
Article number025008
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume74
Issue number2
DOIs
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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