Definitions and upper bounds for unstable boson masses

被引:8
作者
Beenakker, W [1 ]
vanOldenborgh, GJ [1 ]
Hoogland, J [1 ]
Kleiss, R [1 ]
机构
[1] NIKHEF H,1009 DB AMSTERDAM,NETHERLANDS
关键词
D O I
10.1016/0370-2693(96)00282-1
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We consider the problem of a proper definition of the mass of a heavy unstable boson. II is shown how various definitions are related by the renormalization-scheme independence of the full resummed amplitude. This is made explicit for the W boson in the large N-f limit, where we find an upper bound on the peak position of the lineshape and on the mass, provided a sensible definition of the mass is used. In more realistic models, we conjecture that under certain conditions the mass is similarly bounded. Using this approach an upper limit of about 1 TeV on the mass of the Minimal-Standard-Model Higgs boson is found, independent of any breakdown of perturbation theory.
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页码:136 / 141
页数:6
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