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题名: Fragmentation function and hadronic production of the heavy supersymmetric hadrons
作者: Chang, Chao-Hsi ;  Chen, Jiao-Kai ;  Fang, Zhen-Yun ;  Hu, Bing-Quan ;  Wu, Xing-Gang
刊名: EUROPEAN PHYSICAL JOURNAL C
出版日期: 2007
卷号: 50, 期号:4, 页码:969-978
关键词: B-C MESONS ;  CROSS-SECTION ;  TOP-QUARK ;  PARTICLE PHYSICS ;  E+E ANNIHILATION ;  E&E ANNIHILATION ;  Z(0) DECAY ;  COLLISIONS ;  QCD ;  RESUMMATION
学科分类: Physics
通讯作者: Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China,Peoples R China
部门归属: CCAST, World Lab, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Henan Univ Sci & Technol, Dept Math & Phys, Luoyang 471003, Peoples R China; Chongqing Univ, Dept Phys, Chongqing 400044, Peoples R China
英文摘要: The light top-squark (t) over tilde (1) may be the lightest squark, and its lifetime may be 'long enough' in a kind of SUSY models that have not been ruled out yet experimentally, so colorless 'supersymmetric hadrons (superhadrons)' ((t) over tilde (1)(q) over bar) (q is a quark excluding the t- quark) may be formed as long as the light top-squark (t) over tilde (1) can be produced. The fragmentation function of (t) over tilde (1) into heavy ` supersymmetric hadrons (superhadrons)' ((t) over tilde (1)(Q) over bar) ((Q) over bar = (c) over tilde or (b) over tilde) and hadronic production of the superhadrons are investigated quantitatively. The fragmentation function is calculated precisely. Due to the difference in spin of the SUSY component, the asymptotic behavior of the fragmentation function is different from those of the existing ones. The fragmentation function is also applied to compute the production of heavy superhadrons at the hadronic colliders Tevatron and LHC in the so-called fragmentation approach. The resultant cross-section for the heavy superhadrons is too small to observe at Tevatron, but large enough at LHC, when all the relevant parameters in the SUSY models are taken within the favored region for the heavy superhadrons. The production of 'light superhadrons' ((t) over tilde (1)(q) over bar) (q = u, d, s) is also roughly estimated with the same SUSY parameters. It is pointed out that the production cross-sections of the light superhadrons ((t) over tilde (1)(q) over bar) may be much greater than those of the heavy superhadrons, so that even at Tevatron the light superhadrons may be produced in great quantities.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000246100600020
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5745
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Chang, Chao-Hsi,Chen, Jiao-Kai,Fang, Zhen-Yun,et al. Fragmentation function and hadronic production of the heavy supersymmetric hadrons[J]. EUROPEAN PHYSICAL JOURNAL C,2007,50(4):969-978.
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