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. |
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