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	Isospin violation in phi, j/psi, psi '->omega pi(0) via hadronic loops
	Li, Gang1; Zhao, Qiang1,2; Zou, Bing-Song1,3
刊名	Physical review d
	2008
卷号	77期号:1页码:12
ISSN号	1550-7998
DOI	10.1103/physrevd.77.014010
通讯作者	Li, gang()
英文摘要	In this work, we study the isospin-violating decay of phi ->omega pi(0) and quantify the electromagnetic (em) transitions and intermediate meson exchanges as two major sources of the decay mechanisms. in the em decays, the present datum status allows a good constraint on the em decay form factor in the vector meson dominance model, and it turns out that the em transition can only account for about 1/4 similar to 1/3 of the branching ratio for phi ->omega pi(0). the intermediate meson exchanges, k (k) over bar (k*) (intermediate k (k) over bar interaction via k* exchanges), k (k) over bar*(k) (intermediate k (k) over bar* rescattering via kaon exchanges), and k (k) over bar*(k*) (intermediate k (k) over bar* rescattering via k* exchanges), which evade the naive okubo-zweig-iizuka rule, serve as another important contribution to the isospin violations. they are evaluated with effective lagrangians where explicit constraints from experiment can be applied. combining these three contributions, we obtain results in good agreement with the experimental data. this approach is also extended to j/psi(psi')->omega pi(0), where we find contributions from the k (k) over bar (k*), k (k) over bar*(k), and k (k) over bar*(k*) loops are negligibly small, and the isospin violation is likely to be dominated by the em transition.
WOS关键词	ZWEIG-IIZUKA RULE ; MASS RATIOS ; DECAYS ; OMEGA ; OZI ; RHO ; TRANSITIONS ; SYMMETRY ; SCUTTLE ; MESONS
WOS研究方向	Astronomy & Astrophysics ; Physics
WOS类目	Astronomy & Astrophysics ; Physics, Particles & Fields
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000252863700032
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2175881
专题	高能物理研究所
通讯作者	Li, Gang
作者单位	1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England 3.CCAST, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Li, Gang,Zhao, Qiang,Zou, Bing-Song. Isospin violation in phi, j/psi, psi '->omega pi(0) via hadronic loops[J]. Physical review d,2008,77(1):12.
APA	Li, Gang,Zhao, Qiang,&Zou, Bing-Song.(2008).Isospin violation in phi, j/psi, psi '->omega pi(0) via hadronic loops.Physical review d,77(1),12.
MLA	Li, Gang,et al."Isospin violation in phi, j/psi, psi '->omega pi(0) via hadronic loops".Physical review d 77.1(2008):12.

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