SEARCH FOR A NONMINIMAL HIGGS-BOSON PRODUCED IN THE REACTION E+E- -] HZ

	SEARCH FOR A NONMINIMAL HIGGS-BOSON PRODUCED IN THE REACTION E+E- -] HZ
	ALEPH Collaboration
刊名	PHYSICS LETTERS B
	1993
卷号	313 期号:1-2 页码:#REF!
通讯作者	BUSKULIC, D (reprint author), LAB PHYS PARTICULES, IN2P3, CNRS, F-74019 ANNECY LE VIEUX, FRANCE.
英文摘要	A data sample corresponding to 1.23 million hadronic Z decays collected by the ALEPH detector at LEP has been searched for signals of the production of a non-minimal CP-even Higgs boson h in the reaction e+e- --> hZ. The h decay modes considered were: those of the minimal standard model Higgs boson, with modified branching ratios; decays into a pair of CP-odd Higgs bosons A; and decays into invisible final states. Only one event was found, a very acoplanar e+e- pair which could originate from the standard model background process e+e- --> e+e-nunuBAR. Upper limits for the cross-section of the reaction e+e- --> hZ have been derived as a function Of m(h), the mass of the Higgs boson h. In the case of invisible decays, the 95% CL lower limit on m(h) is 65 GeV/c2 for a production cross-section equal to that of a minimal standard model Higgs boson. When combined with previous ALEPH results on the reaction e+e- --> hA, these cross-section upper limits exclude a domain in the (m(h), M(A)) plane of the MSSM such that, if invisible h and A decays can be neglected, 95% CL lower limits of 44 and 21 GeV/c2 result for m(h) and m(A), respectively, independent of the other parameters of the model.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
WOS记录号	WOS:A1993LV18900048
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/227532]
专题	高能物理研究所_实验物理中心
推荐引用方式 GB/T 7714	ALEPH Collaboration. SEARCH FOR A NONMINIMAL HIGGS-BOSON PRODUCED IN THE REACTION E+E- -] HZ[J]. PHYSICS LETTERS B,1993,313(1-2):#REF!.
APA	ALEPH Collaboration.(1993).SEARCH FOR A NONMINIMAL HIGGS-BOSON PRODUCED IN THE REACTION E+E- -] HZ.PHYSICS LETTERS B,313(1-2),#REF!.
MLA	ALEPH Collaboration."SEARCH FOR A NONMINIMAL HIGGS-BOSON PRODUCED IN THE REACTION E+E- -] HZ".PHYSICS LETTERS B 313.1-2(1993):#REF!.