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Chang, Chao-Hsi; Chen, Jiao-Kai; Fang, Zhen-Yun; Hu, Bing-Quan; Wu, Xing-Gang; Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China,Peoples R China
Fragmentation function and hadronic production of the heavy supersymmetric hadrons
发表期刊EUROPEAN PHYSICAL JOURNAL C
关键词B-c Mesons Cross-section Top-quark Particle Physics e+e Annihilation e&e Annihilation z(0) Decay Collisions Qcd Resummation
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.
2007
ISSN1434-6044
卷号50期号:4页码:969-978
学科领域Physics
收录类别SCI
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5745
专题SCI期刊论文
通讯作者Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China,Peoples R China
推荐引用方式
GB/T 7714
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.
APA Chang, Chao-Hsi,Chen, Jiao-Kai,Fang, Zhen-Yun,Hu, Bing-Quan,Wu, Xing-Gang,&Chang, CH , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China,Peoples R China.(2007).Fragmentation function and hadronic production of the heavy supersymmetric hadrons.EUROPEAN PHYSICAL JOURNAL C,50(4),969-978.
MLA Chang, Chao-Hsi,et al."Fragmentation function and hadronic production of the heavy supersymmetric hadrons".EUROPEAN PHYSICAL JOURNAL C 50.4(2007):969-978.
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