The Role of a(1)(1260) in pi(-)p -> a(1)(-) (1260)p and pi(-)p -> pi(-)rho(0)p Reactions Near Threshold

	The Role of a(1)(1260) in pi(-)p -> a(1)(-) (1260)p and pi(-)p -> pi(-)rho(0)p Reactions Near Threshold
	Cheng, Chen 1,2; Xie, Ju-Jun 1,2,3,4; Cao, Xu 1,2,3,4
刊名	COMMUNICATIONS IN THEORETICAL PHYSICS
	2016-12-01
卷号	66 页码:675-680
关键词	effective Lagrangian approach isobar model axial-vector mesons
ISSN号	0253-6102
英文摘要	We report on a theoretical study of the pi(-)p -> a(1)(-) (1260)p and pi(-)p -> pi(-)rho(0)p reactions near threshold within an effective Lagrangian approach. The production process is described by t-channel rho(0) meson exchange. For the pi(-)p -> pi(-)rho(0)p reaction, the final pi(-)rho(0) results from the decay of the a(1) (1260) resonance, which is assumed as a dynamically generated state from the K*(K) over bar and per coupled channel interactions. We calculate the total cross section of the pi(-)p -> a(1)(-) (1260)p reaction. It is shown that, with the coupling constant of the a(1) (1260) to per channel obtained from the chiral unitary theory and a cut off parameter Lambda(rho) similar to 1.5 GeV in the form factors, the experimental measurement can be reproduced. Furthermore, the total and differential cross sections of pi(-)p -> a(1)(-) (1260)p -> pi(-)rho(0)p reaction are evaluated, and it is expected that our model calculations can be tested by future experiments. These reactions are important for the study of the al (1260) resonance and would provide further constraints on the properties of the a(1) (1260) state.
资助项目	National Natural Science Foundation of China[11475227] ; National Natural Science Foundation of China[11475015] ; Youth Innovation Promotion Association CAS[2016367]
WOS关键词	RESONANCES ; DECAYS ; GEV/C ; QCD
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000391282600011
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/44091]
专题	中国科学院近代物理研究所
通讯作者	Xie, Ju-Jun
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Peoples R China 4.Lanzhou Univ, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Chen,Xie, Ju-Jun,Cao, Xu. The Role of a(1)(1260) in pi(-)p -> a(1)(-) (1260)p and pi(-)p -> pi(-)rho(0)p Reactions Near Threshold[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2016,66:675-680.
APA	Cheng, Chen,Xie, Ju-Jun,&Cao, Xu.(2016).The Role of a(1)(1260) in pi(-)p -> a(1)(-) (1260)p and pi(-)p -> pi(-)rho(0)p Reactions Near Threshold.COMMUNICATIONS IN THEORETICAL PHYSICS,66,675-680.
MLA	Cheng, Chen,et al."The Role of a(1)(1260) in pi(-)p -> a(1)(-) (1260)p and pi(-)p -> pi(-)rho(0)p Reactions Near Threshold".COMMUNICATIONS IN THEORETICAL PHYSICS 66(2016):675-680.