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تسجيل مستخدم جديدRuling out a 4th generation using limits on hadron collider Higgs signals
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John F. Gunion
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We consider the impact of a 4th generation on Higgs to $gammagamma$ and $WW,ZZ$ signals and demonstrate that the Tevatron and LHC have essentially eliminated the possibility of a 4th generation if the Higgs is SM-like and has mass below 200 GeV. We also show that the absence of enhanced Higgs signals in current data sets in the $gammagamma$ and $WW,ZZ$ final states can strongly constrain the possibility of a 4th generation in two-Higgs-doublet models of type II, including the MSSM.
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