Sigma-term physics in the perturbative chiral quark model

V. E. Lyubovitskij, Th Gutsche, Amand Faessler, E. G. Drukarev

Результат исследований: Материалы для журналаСтатья

73 Цитирования (Scopus)

Выдержка

We apply the perturbative chiral quark model at one loop to analyze meson-baryon sigma terms. Analytic expressions for these quantities are obtained in terms of fundamental parameters of low-energy pion-nucleon physics (weak pion decay constant, axial nucléon coupling, strong pion-nucleon form factor) and of only one model parameter (radius of the nucleonic three-quark core). Our result for the πN sigma term σπN ≈45 MeV is in good agreement with the value deduced by Gasser, Leutwyler, and Sainio using dispersionrelation techniques and exploiting the chiral symmetry constraints.

Язык оригиналаАнглийский
Номер статьи054026
ЖурналPhysical Review D
Том63
Номер выпуска5
DOI
СостояниеОпубликовано - 2001
Опубликовано для внешнего пользованияДа

Отпечаток

quark models
Quarks
pions
Physics
physics
Chiral Symmetry
Form Factors
Term
Baryon
Strong Coupling
Mesons
nucleonics
Radius
Decay
form factors
baryons
mesons
Energy
Model
quarks

ASJC Scopus subject areas

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

Цитировать

Sigma-term physics in the perturbative chiral quark model. / Lyubovitskij, V. E.; Gutsche, Th; Faessler, Amand; Drukarev, E. G.

В: Physical Review D, Том 63, № 5, 054026, 2001.

Результат исследований: Материалы для журналаСтатья

Lyubovitskij, V. E. ; Gutsche, Th ; Faessler, Amand ; Drukarev, E. G. / Sigma-term physics in the perturbative chiral quark model. В: Physical Review D. 2001 ; Том 63, № 5.
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