Role of the Lambda(+)(c) (2940) in the pi(-)p -> D(-)D(0)p reaction close to threshold

doi:10.1103/PhysRevD.92.034029

	Role of the Lambda(+)(c) (2940) in the pi(-)p -> D(-)D(0)p reaction close to threshold
	Xie, Ju-Jun 1,2,3,4; Dong, Yu-Bing 5,6; Cao, Xu 1,2,3,4
刊名	PHYSICAL REVIEW D
	2015-08-31
卷号	92 页码:7
ISSN号	1550-7998
DOI	10.1103/PhysRevD.92.034029
英文摘要	We report on a theoretical study of the pi(-)p --> D(-)D(0)p reaction near threshold within an effective Lagrangian approach. The production process is described by t-channel D(0) meson exchange, s-channel nucleon pole, and u-channel Sigma(++)(c) exchange. In our work, the final D(0)p results fromthe ground Lambda(+)(c) (2286) state and also dominantly from the excited Lambda(+)(c) (2286) state which is assumed as a D(0)p molecular state with spin parity J(P) = 1/2(+) or 1/2(-). We calculate the total cross section of the pi(-)p --> D(-)D(0)p reaction. It is shown that the spin-parity assignment of 1/2(-) for Lambda(+)(c) (2286) gives a sizable enhancement for the total cross section in comparison with a choice of J(p) = 1/2(+). However, our theoretical result of the total cross section is sensitive to the value of the cutoff parameter involved in the formfactor of the exchanged off-shell particles. Moreover, we also calculate the second order differential cross section and find it can be used to determine the parity of the Lambda(+)(c) (2286). It is expected that our model calculations can be tested by future experiments at J-PARC in Japan.
资助项目	National Natural Science Foundation of China[11475227] ; National Natural Science Foundation of China[10775148] ; National Natural Science Foundation of China[10975146] ; National Natural Science Foundation of China[11475192] ; National Natural Science Foundation of China[11035006] ; National Natural Science Foundation of China[11261130] ; DFG ; NSFC[110]
WOS关键词	RESONANCE MODEL ; NUCLEON ; STATE
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000360270500002
资助机构	National Natural Science Foundation of China ; DFG ; NSFC
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/40584]
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.Chinese Acad Sci, Inst Modern Phys, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Peoples R China 3.Lanzhou Univ, Lanzhou 730000, Peoples R China 4.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 5.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 6.Chinese Acad Sci, TPCSF, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xie, Ju-Jun,Dong, Yu-Bing,Cao, Xu. Role of the Lambda(+)(c) (2940) in the pi(-)p -> D(-)D(0)p reaction close to threshold[J]. PHYSICAL REVIEW D,2015,92:7.
APA	Xie, Ju-Jun,Dong, Yu-Bing,&Cao, Xu.(2015).Role of the Lambda(+)(c) (2940) in the pi(-)p -> D(-)D(0)p reaction close to threshold.PHYSICAL REVIEW D,92,7.
MLA	Xie, Ju-Jun,et al."Role of the Lambda(+)(c) (2940) in the pi(-)p -> D(-)D(0)p reaction close to threshold".PHYSICAL REVIEW D 92(2015):7.