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

文献类型：期刊论文

作者Cheng, Chen1,2; Xie, Ju-Jun1,2,3,4; Cao, Xu1,2,3,4
刊名COMMUNICATIONS IN THEORETICAL PHYSICS
出版日期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.
WOS关键词RESONANCES ; DECAYS ; GEV/C ; QCD
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研究方向Physics
语种英语
WOS记录号WOS:000391282600011
出版者IOP PUBLISHING LTD
资助机构National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
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.

入库方式： OAI收割

来源：近代物理研究所

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