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Effects of flavour-dependent q(q)over-bar annihilation on the mixing angle of the isoscalar octet-singlet and Schwinger's nonet mass formula
Li DM(李德民); Yu H(郁宏); Shen QX(沈齐兴); Li, DM; Yu, H; Shen, QX
2001
发表期刊CHINESE PHYSICS LETTERS
卷号18期号:2页码:#REF!
通讯作者Li, DM (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China.
文章类型Article
摘要By incorporating the flavour-dependent quark-antiquark annihilation amplitude into the mass-squared matrix describing the mixing of the isoscalar states of a meson nonet, the new version of Schwinger's nonet mass formula, which holds with a high accuracy for the 0(-+), 1(--), 2(++), 2(-+) and 3(--) nonets, is derived and the mixing angle of the isoscalar octet-singlet for these nonets is obtained. In particular, the mixing angle of the isoscalar octet-singlet for the pseudoscalar nonet is determined to take the value of -12.92 degrees, which is in agreement with the value range from -13 degrees to -17 degrees deduced from a rather exhaustive and up-to-date analysis of data. It is also pointed out that the omission of the flavour-dependent q (q) over bar annihilation effect might be a factor resulting in the invalidity of Schwinger's original nonet mass formula for the pseudoscalar nonet.
学科领域Physics
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000166976300010
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被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226766
专题理论物理室
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GB/T 7714
Li DM,Yu H,Shen QX,et al. Effects of flavour-dependent q(q)over-bar annihilation on the mixing angle of the isoscalar octet-singlet and Schwinger's nonet mass formula[J]. CHINESE PHYSICS LETTERS,2001,18(2):#REF!.
APA 李德民,郁宏,沈齐兴,Li, DM,Yu, H,&Shen, QX.(2001).Effects of flavour-dependent q(q)over-bar annihilation on the mixing angle of the isoscalar octet-singlet and Schwinger's nonet mass formula.CHINESE PHYSICS LETTERS,18(2),#REF!.
MLA 李德民,et al."Effects of flavour-dependent q(q)over-bar annihilation on the mixing angle of the isoscalar octet-singlet and Schwinger's nonet mass formula".CHINESE PHYSICS LETTERS 18.2(2001):#REF!.
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