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Effects of flavour-dependent q(q)over-bar annihilation on the mixing angle of the isoscalar octet-singlet and Schwinger
Li, DM; Yu, H; Shen, QX; Li, DM , Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China.
2001
发表期刊CHINESE PHYSICS LETTERS
ISSN0256-307X
卷号18期号:2页码:184-186
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.
部门归属Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Pseudoscalar Mesons
学科领域Physics
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收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12817
专题理论物理所1978-2010年知识产出
通讯作者Li, DM , Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China.
推荐引用方式
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[J]. CHINESE PHYSICS LETTERS,2001,18(2):184-186.
APA Li, DM,Yu, H,Shen, QX,&Li, DM , Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China..(2001).Effects of flavour-dependent q(q)over-bar annihilation on the mixing angle of the isoscalar octet-singlet and Schwinger.CHINESE PHYSICS LETTERS,18(2),184-186.
MLA Li, DM,et al."Effects of flavour-dependent q(q)over-bar annihilation on the mixing angle of the isoscalar octet-singlet and Schwinger".CHINESE PHYSICS LETTERS 18.2(2001):184-186.
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