منابع مشابه
Naturalness Implications of LEP Results
We analyse the fine-tuning constraints arising from absence of superpartners at LEP, without strong universality assumptions. We show that such constraints do not imply that charginos or neutralinos should have been seen at LEP, contrary to the usual arguments. They do however imply relatively light gluinos (
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We discuss the origin of ”focus points” in the scalar mass RGEs of the MSSM and their implications for collider searches. We present a new exact analytic solution to the homogeneous system of scalar mass RGEs in the MSSM for general tan β. This is then used to prove that the focus point for m2Hu depends only on the value of the top Yukawa coupling at the weak scale (not its value at the GUT sca...
متن کاملResults from LEP High Energy
In November 1995 for the rst time LEP provided e + e ? collisions well above Z 0 peak. The luminosity of 6 pb ?1 per experiment at energies 130-140 GeV was provided. In this report preliminary results of four LEP experiments on Electro Weak model tests and searches for New Phenomena are presented.
متن کاملImplications of a Higgs Discovery at Lep
If the Higgs boson has a mass below 130 GeV, then the standard model vacuum is unstable; if it has a mass below 90 GeV (i.e. within reach of LEP within the next two years), then the instability will occur at a scale between 800 GeV and 10 TeV. We show that precise determinations of the Higgs and top quark masses as well as more detailed effective potential calculations will enable one to pin do...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1999
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(99)00190-2