Spin content of Λ in QCD sum rules

Name: Spin content of Λ in QCD sum rules
Author: Erkol, Güray, Oka, M.

İsim	Spin content of Λ in QCD sum rules
Yazar	Erkol, Güray, Oka, M.
Basım Tarihi:	2009-06-01
Basım Yeri	- American Physical Society
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	2-s2.0-67649862061
Kayıt Numarası	066414f5-e9ac-4fcb-8754-a70b7d624928
Lokasyon	Natural and Mathematical Sciences
Tarih	2009-06-01
Notlar	KAKENHI
Örnek Metin	We calculate the isoscalar axial-vector coupling constants of the Λ hyperon using the method of QCD sum rules. A determination of these coupling constants reveals the individual contributions of the u, d, and the s quarks to the spin content of Λ. Our results for the light-quark contributions are in agreement with those from experiment assuming flavor SU(3). We also find that the flavor-SU(3)-breaking effects are small and the contributions from the u and the d quarks to the Λ polarization are negatively polarized as in the flavor-SU(3) limit.
DOI	10.1103/PhysRevD.79.114028
Cilt	79

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Spin content of Λ in QCD sum rules

Yazar Erkol, Güray, Oka, M.

Basım Tarihi 2009-06-01

Basım Yeri - American Physical Society

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 2-s2.0-67649862061

Kayıt Numarası 066414f5-e9ac-4fcb-8754-a70b7d624928

Lokasyon Natural and Mathematical Sciences

Tarih 2009-06-01

Notlar KAKENHI

Örnek Metin We calculate the isoscalar axial-vector coupling constants of the Λ hyperon using the method of QCD sum rules. A determination of these coupling constants reveals the individual contributions of the u, d, and the s quarks to the spin content of Λ. Our results for the light-quark contributions are in agreement with those from experiment assuming flavor SU(3). We also find that the flavor-SU(3)-breaking effects are small and the contributions from the u and the d quarks to the Λ polarization are negatively polarized as in the flavor-SU(3) limit.

DOI 10.1103/PhysRevD.79.114028

Cilt 79