Fragmentation function and hadronic production of the heavy supersymmetric hadrons

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	Fragmentation function and hadronic production of the heavy supersymmetric hadrons
	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
刊名	EUROPEAN PHYSICAL JOURNAL C
	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
ISSN号	1434-6044
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.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000246100600020
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/5745]
专题	理论物理研究所_理论物理所1978-2010年知识产出
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.