Pseudoscalar-meson-octet-baryon coupling constants in two-flavor lattice QCD

Name: Pseudoscalar-meson-octet-baryon coupling constants in two-flavor lattice QCD
Author: Erkol, Güray, Oka, M., Takahashi, T. T.

İsim	Pseudoscalar-meson-octet-baryon coupling constants in two-flavor lattice QCD
Yazar	Erkol, Güray, Oka, M., Takahashi, T. T.
Basım Tarihi:	2009-04-01
Basım Yeri	- American Physical Society
Konu	Meson-baryon coupling constant, Hyperon axial charge, Lattice QCD
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	2-s2.0-66349092449
Kayıt Numarası	70ec4f5e-4de6-4269-be4b-40be0ba8b43e
Lokasyon	Natural and Mathematical Sciences
Tarih	2009-04-01
Örnek Metin	We evaluate the πΝΝ, π∑∑, πΛ∑, KΛN and K∑N coupling constants and the corresponding monopole masses in lattice QCD with two flavors of dynamical quarks. The parameters representing the SU(3)-flavor symmetry are computed at the point where the three quark flavors are degenerate at the physical s-quark mass. In particular, we obtain α ≡ F/(F+D) = 0.395(6). The quark-mass dependences of the coupling constants are obtained by changing the u- and the d-quark masses. We find that the SU(3)-flavor parameters have weak quark-mass dependence and thus the SU(3)-flavor symmetry is brokenby only a few percent at each quark-mass point we consider.
DOI	10.1103/PhysRevD.79.074509
Cilt	79

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Pseudoscalar-meson-octet-baryon coupling constants in two-flavor lattice QCD

Yazar Erkol, Güray, Oka, M., Takahashi, T. T.

Basım Tarihi 2009-04-01

Basım Yeri - American Physical Society

Konu Meson-baryon coupling constant, Hyperon axial charge, Lattice QCD

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 2-s2.0-66349092449

Kayıt Numarası 70ec4f5e-4de6-4269-be4b-40be0ba8b43e

Lokasyon Natural and Mathematical Sciences

Tarih 2009-04-01

Örnek Metin We evaluate the πΝΝ, π∑∑, πΛ∑, KΛN and K∑N coupling constants and the corresponding monopole masses in lattice QCD with two flavors of dynamical quarks. The parameters representing the SU(3)-flavor symmetry are computed at the point where the three quark flavors are degenerate at the physical s-quark mass. In particular, we obtain α ≡ F/(F+D) = 0.395(6). The quark-mass dependences of the coupling constants are obtained by changing the u- and the d-quark masses. We find that the SU(3)-flavor parameters have weak quark-mass dependence and thus the SU(3)-flavor symmetry is brokenby only a few percent at each quark-mass point we consider.

DOI 10.1103/PhysRevD.79.074509

Cilt 79