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

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	Role of the lambda(+)(c) (2940) in the pi(-)p -> d(-)d(0)p reaction close to threshold
	Xie, JJ; Dong, YB; Cao, X
刊名	Physical review d
	2015
卷号	92 期号:3 页码:34029
通讯作者	Xie, jj (reprint author), chinese acad sci, inst modern phys, lanzhou 730000, peoples r china.
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.
学科主题	Astronomy & Astrophysics ; Physics
类目[WOS]	Astronomy & astrophysics ; Physics, particles & fields
关键词[WOS]	Resonance model ; Nucleon ; State
收录类别	SCI
语种	英语
WOS记录号	WOS:000360270500002
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/20888]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Xie, JJ,Dong, YB,Cao, X. Role of the lambda(+)(c) (2940) in the pi(-)p -> d(-)d(0)p reaction close to threshold[J]. Physical review d,2015,92(3):34029.
APA	Xie, JJ,Dong, YB,&Cao, X.(2015).Role of the lambda(+)(c) (2940) in the pi(-)p -> d(-)d(0)p reaction close to threshold.Physical review d,92(3),34029.
MLA	Xie, JJ,et al."Role of the lambda(+)(c) (2940) in the pi(-)p -> d(-)d(0)p reaction close to threshold".Physical review d 92.3(2015):34029.