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

	Role of the Lambda(+)(c) (2940) in the pi(-)p -> D(-)D(0)p reaction close to threshold
	Xie, JJ; Dong YB(董宇兵); Dong, YB; Cao, X
刊名	PHYSICAL REVIEW D
	2015
卷号	92 期号:3 页码:34029
通讯作者	董宇兵
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
收录类别	SCI
WOS记录号	WOS:000360270500002
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228752]
专题	高能物理研究所_理论物理室
推荐引用方式 GB/T 7714	Xie, JJ,Dong YB,Dong, YB,et al. 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,董宇兵,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.