Coupled channel effects in pi pi S-wave interaction

	Coupled channel effects in pi pi S-wave interaction
	Wu FQ(吴锋泉); Zou BS(邹冰松); Wu, FQ; Zou, BS
刊名	INTERNATIONAL JOURNAL OF MODERN PHYSICS A
	2005
卷号	20 期号:8-9 页码:1905-1909
关键词	pi pi scattering coupled channel K-matrix
通讯作者	CCAST, World Lab, Beijing 100080, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
英文摘要	We study coupled channel effects upon isospin I = 2 and I = 0 ππ S-wave interaction. With introduction of the ππ &RARR; ρρ &RARR; ππ coupled channel box diagram contribution into ππ amplitude in addition to ρ and f(2)(1270) exchange, we reproduce the ππ I=2 S-wave and D-wave scattering phase shifts and inelasticities up to 2 GeV quite well in a K-matrix formalism. For I = 0 case, the same ππ &RARR; ρρ &RARR; ππ box diagram is found to give the largest contribution for the inelasticity among all possible coupled channels including ππ &RARR; ωω &RARR; ππ, ππ &RARR; KK &RARR; ππ. We also show why the broad a appears narrower in production processes than in ππ scattering process.
学科主题	Physics
类目[WOS]	Physics, Nuclear ; Physics, Particles & Fields
研究领域[WOS]	Physics
原文出处	SCI
语种	英语
WOS记录号	WOS:000229085600067
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/239573]
专题	高能物理研究所_理论物理室
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Wu FQ,Zou BS,Wu, FQ,et al. Coupled channel effects in pi pi S-wave interaction[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2005,20(8-9):1905-1909.
APA	吴锋泉,邹冰松,Wu, FQ,&Zou, BS.(2005).Coupled channel effects in pi pi S-wave interaction.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,20(8-9),1905-1909.
MLA	吴锋泉,et al."Coupled channel effects in pi pi S-wave interaction".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 20.8-9(2005):1905-1909.