Higgs pair production with SUSY QCD correction: revisited under current experimental constraints

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	Higgs pair production with SUSY QCD correction: revisited under current experimental constraints
	Han, CC; Ji, XT; Wu, L; Wu, PW; Yang, JM
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2014
期号	4 页码:3
关键词	SUPERSYMMETRIC STANDARD MODEL DARK-MATTER MSSM LHC DECAY MASS DIMENSIONS DISCOVERY NMSSM
ISSN号	1029-8479
通讯作者	Han, CC (reprint author), Acad Sinica, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
英文摘要	We consider the current experimental constraints on the parameter space of the MSSM and NMSSM. Then in the allowed parameter space we examine the Higgs pair production at the 14TeV LHC via b (b) over bar -> hh (h is the 125GeV SM-like Higg boson) with one-loop SUSY QCD correction and compare it with the production via gg -> hh. We obtain the following observations: (i) For the MSSM the production rate of b (b) over bar -> hh can reach 50 fb and thus can be competitive with gg -> hh, while for the NMSSM b (b) over bar -> hh has a much smaller rate than gg. hh due to the suppression of the hb (b) over bar coupling; (ii) The SUSY-QCD correction to b (b) over bar -> hh is sizable, which can reach 45% for the MSSM and 15% for the NMSSM within the 1s region of the Higgs data; (iii) In the heavy SUSY limit (all soft mass parameters become heavy), the SUSY effects decouple rather slowly from the Higgs pair production (especially the gg -> hh process), which, for M S U S Y = 5TeV and m A < 1TeV, can enhance the production rate by a factor of 1.5 and 1.3 for the MSSM and NMSSM, respectively. So, the Higgs pair production may be helpful for unraveling the effects of heavy SUSY.
学科主题	Physics
收录类别	SCI
资助信息	ARC Centre of Excellence for Particle Physics at the Tera-scale; National Natural Science Foundation of China (NNSFC) [10775039, 11075045, 11275245, 10821504, 11135003]; Ri-Xin Foundation of BJUT from China; Startup Foundation for Doctors of Henan Normal University [11112]
原文出处	http://dx.doi.org/10.1007/JHEP04(2014)003
语种	英语
WOS记录号	WOS:000334186900002
公开日期	2015-06-03
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15798]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Han, CC,Ji, XT,Wu, L,et al. Higgs pair production with SUSY QCD correction: revisited under current experimental constraints[J]. JOURNAL OF HIGH ENERGY PHYSICS,2014(4):3.
APA	Han, CC,Ji, XT,Wu, L,Wu, PW,&Yang, JM.(2014).Higgs pair production with SUSY QCD correction: revisited under current experimental constraints.JOURNAL OF HIGH ENERGY PHYSICS(4),3.
MLA	Han, CC,et al."Higgs pair production with SUSY QCD correction: revisited under current experimental constraints".JOURNAL OF HIGH ENERGY PHYSICS .4(2014):3.