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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(董宇兵); Dong, YB; Cao, X
2015
发表期刊PHYSICAL REVIEW D
卷号92期号:3页码:34029
通讯作者董宇兵
文章类型Article
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.
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.92.034029
收录类别SCI
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000360270500002
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被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228752
专题理论物理室
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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.
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