The role of Delta(++)* (1620) resonances in pp -> nK(+)Sigma(+) reaction and its important implications
Xie JJ(谢聚军); Zou BS(邹冰松); Xie, JJ; Zou, BS
刊名PHYSICS LETTERS B
2007
卷号649期号:5-6页码:405-412
学科分类Physics
DOI10.1016/j.physletb.2007.04.035
通讯作者CAS, Inst High Energy Phys, Beijing 100049, Peoples R China ; Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China ; Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Accelerator, Lanzhou 730000, Peoples R China
文章类型Article
英文摘要The pp -> nK(+)Sigma(+) reaction is a very good isospin 3/2 filter for studying Delta(++*) decaying to K+Sigma(+). With an effective Lagrangian approach, contributions from a previous ignored sub-K+Sigma(+)-threshold resonance Delta(++*) (1620)1/2(-) are fully included in addition to those already considered in previous calculations. It is found that the Delta(++*)(1620)1/2(-) resonance gives an overwhelmingly dominant contribution for energies very close to threshold, with a very important contribution from the t-channel rho exchange. This solves the problem that all previous calculations seriously underestimate the near-threshold cross section by order(s) of magnitude. Many important implications of the results are discussed. (c) 2007 Elsevier B.V. All rights reserved.
类目[WOS]Physics, Multidisciplinary
研究领域[WOS]Physics
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语种英语
WOS记录号WOS:000247390800010
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被引频次:32[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/311005/237342
专题中国科学院高能物理研究所_理论物理室_期刊论文
作者单位中国科学院高能物理研究所
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Xie JJ,Zou BS,Xie, JJ,et al. The role of Delta(++)* (1620) resonances in pp -> nK(+)Sigma(+) reaction and its important implications[J]. PHYSICS LETTERS B,2007,649(5-6):405-412.
APA 谢聚军,邹冰松,Xie, JJ,&Zou, BS.(2007).The role of Delta(++)* (1620) resonances in pp -> nK(+)Sigma(+) reaction and its important implications.PHYSICS LETTERS B,649(5-6),405-412.
MLA 谢聚军,et al."The role of Delta(++)* (1620) resonances in pp -> nK(+)Sigma(+) reaction and its important implications".PHYSICS LETTERS B 649.5-6(2007):405-412.
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