Study of the strong Σc→Λcπ,Σc→Λcπ and Ξc→Ξcπ decays in a nonrelativistic quark model -: art. no. 094022

被引：41

作者：

Albertus, C ^{[1
]}

Hernández, E

Nieves, J

Verde-Velasco, JM

机构：

[1] Univ Granada, Dept Fis Moderna, E-18071 Granada, Spain

[2] Fac Ciencias, Grp Fis Nucl, E-37008 Salamanca, Spain

来源：

PHYSICAL REVIEW D | 2005年 / 72卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.72.094022

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results for the strong widths corresponding to the Sigma(c)->Lambda(c)pi, Sigma(*)(c)->Lambda(c)pi and Xi(*)(c)->Xi(c)pi decays. The calculations have been done in a nonrelativistic constituent quark model with wave functions that take advantage of the constraints imposed by heavy quark symmetry. Partial conservation of axial current hypothesis allows us to determine the strong vertices from an analysis of the axial current matrix elements. Our results Gamma(Sigma(++)(c)->Lambda(+)(c)pi(+))=2.41 +/- 0.07 +/- 0.02 MeV, Gamma(Sigma(+)(c)->Lambda(+)(c)pi(0))=2.79 +/- 0.08 +/- 0.02 MeV, Gamma(Sigma(0)(c)->Lambda(+)(c)pi(-))=2.37 +/- 0.07 +/- 0.02 MeV, Gamma(Sigma(*++)(c)->Lambda(+)(c)pi(+))=17.52 +/- 0.74 +/- 0.12 MeV, Gamma(Sigma(*+)(c)->Lambda(+)(c)pi(0))=17.31 +/- 0.73 +/- 0.12 MeV, Gamma(Sigma(*0)(c)->Lambda(+)(c)pi(-))=16.90 +/- 0.71 +/- 0.12 MeV, Gamma(Xi(*+)(c)->Xi(0)(c)pi(+)+Xi(+)(c)pi(0))=3.18 +/- 0.10 +/- 0.01 MeV, and Gamma(Xi(*0)(c)->Xi(+)(c)pi(-)+Xi(0)(c)pi(0))=3.03 +/- 0.10 +/- 0.01 MeV are in good agreement with experimental determinations.

引用

页数：7

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Study of the strong Σc→Λcπ,Σ*c→Λcπ and Ξ*c→Ξcπ decays in a nonrelativistic quark model -: art. no. 094022

Study of the strong Σc→Λcπ,Σc→Λcπ and Ξc→Ξcπ decays in a nonrelativistic quark model -: art. no. 094022