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题名: Role of the Delta*(1940) in the pi(+) p -> K+ Sigma(+)(1385) and pp -> nK(+) Sigma(+)(1385) reactions
作者: Xie, JJ ;  Wang, E ;  Zou, BS
刊名: PHYSICAL REVIEW C
出版日期: 2014
卷号: 90, 期号:2, 页码:25207
关键词: STRANGE-PARTICLE PRODUCTION ;  EXCHANGE MODEL ;  RESONANCES ;  COLLISIONS
学科分类: Physics
DOI: 10.1103/PhysRevC.90.025207
通讯作者: Xie, JJ (reprint author), Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.
部门归属: [Xie, Ju-Jun] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China ;  [Xie, Ju-Jun] Inst Modern Phys CAS, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Peoples R China ;  [Xie, Ju-Jun] Lanzhou Univ, Lanzhou 730000, Peoples R China ;  [Xie, Ju-Jun ;  Zou, Bing-Song] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China ;  [Wang, En] Univ Valencia, CSIC, Ctr Mixto, Dept Fis Teor,Inst Invest Paterna, E-46071 Valencia, Spain ;  [Wang, En] Univ Valencia, CSIC, Ctr Mixto, IFIC,Inst Invest Paterna, E-46071 Valencia, Spain
英文摘要: The pp -> nK(+)Sigma(+)(1385) reaction is a very good isospin 3/2 filter for studying Delta(++)* resonance decaying to K+Sigma(+)(1385). Within the effective Lagrangian method, we investigate the Sigma (1385) (spin parity J(P) = 3/2(+)) hadronic production in the pi(+) p -> K+Sigma(+)(1385) and pp -> nK(+)Sigma(+)(1385) reactions. For the pi(+) p -> K+Sigma(+)(1385) reaction, in addition to the "background" contributions from t-channel K*(0) exchange and u-channel Lambda(1115) and Sigma(0)(1193) exchange, we also consider the contribution from the s-channel Delta*(1940) resonance, which has significant coupling to the K Sigma(1385) channel. We show that the inclusion of the Delta*(1940) resonance leads to a fairly good description of the low-energy experimental total cross section data of pi(+)p -> K+Sigma(+)(1385) reaction. Basing on the study of the pi(+)p -> K+Sigma(+)(1385) reaction and with the assumption that the excitation of Delta*(1940) resonance dominates the pp -> nK(+)Sigma(+)(1385) reaction, we calculate the total and differential cross sections of the pp -> nK(+)Sigma(+)(1385) reaction. It is shown that the new experimental data support the important role played by the Delta*(1940) resonance with a mass in the region of 1940 MeV and a width of around 200 MeV. We also demonstrate that the invariant mass distribution and the Dalitz plot provide direct information of the Sigma(+)(1385) production, which can be tested by future experiments.
资助者: DGI; FEDER [FIS2011-28853-C02-01, FIS2011-28853-C02-02]; Spanish Ingenio-Consolider Program CPAN [CSD2007-00042]; Generalitat Valenciana [PROMETEO/2009/0090]; National Natural Science Foundation of China [11105126, 11035006, 11121092, 11261130311]; Chinese Academy of Sciences [KJCX2-EW-N01]; Ministry of Science and Technology of China [2009CB825200]; European Community-Research Infrastructure Integrating Activity [283286]; DFG; NSFC
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000341256900004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15679
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Xie, JJ,Wang, E,Zou, BS. Role of the Delta*(1940) in the pi(+) p -> K+ Sigma(+)(1385) and pp -> nK(+) Sigma(+)(1385) reactions[J]. PHYSICAL REVIEW C,2014,90(2):25207.
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