Experimental signatures of fermiophobic Higgs bosons
Experimental signatures of fermiophobic Higgs bosons
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疏铁希格斯玻色子的实验特征
DOI：
10.1007/s100529900252
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Rui Santos
中科院分区：
文献类型：
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作者：
L. Brücher;Rui Santos
抽象。在没有CP破坏的情况下，最一般的双Higgs模型势依赖于10个真实的独立参量.排除自发CP破坏导致两个7参数模型。虽然这两种模型产生5个标量粒子和2个混合角，所得到的标量扇区的现象是不同的。如果要避免在树水平上改变中性流的味道，在这两种情况下，有四种可供选择的引入费米子耦合的方法。在其中一个模型中，CP偶数扇区的混合角可以选择为使得费米子与最轻标量希格斯玻色子的耦合消失。同时，通过适当地选择CP奇扇区的混合角，可以抑制费米子与带电和赝标量希格斯玻色子的耦合。我们研究了两种模型在疏费米极限下的现象学，并给出了标量粒子衰变的不同分支比。我们使用目前的实验结果从LEP对撞机来约束模型。
Abstract. The most general Two Higgs Doublet Model potential without explicit CP violation depends on 10 real independent parameters. Excluding spontaneous CP violation results in two 7 parameter models. Although both models give rise to 5 scalar particles and 2 mixing angles, the resulting phenomenology of the scalar sectors is different. If flavour changing neutral currents at tree level are to be avoided, one has, in both cases, four alternative ways of introducing the fermion couplings. In one of these models the mixing angle of the CP even sector can be chosen in such a way that the fermion couplings to the lightest scalar Higgs boson vanishes. At the same time it is possible to suppress the fermion couplings to the charged and pseudo-scalar Higgs bosons by appropriately choosing the mixing angle of the CP odd sector. We investigate the phenomenology of both models in the fermiophobic limit and present the different branching ratios for the decays of the scalar particles. We use the present experimental results from the LEP collider to constrain the models.