Complete tree-level calculation of e+e- -> Zbb process at LEP200 - Higgs signal and backgroundстатья
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Аннотация:We consider the possibility to detect the Higgs boson signal in the process e+e- --> Zbb at LEP200 energies. The calculations are performed in the tree approximation for complete set of diagrams, including not only the signal (e+e- --> HZ --> Zbb) and the main background (e+e- --> ZZ --> Zbb) contributions, but also additional background (for instance, Z emission from the b-quark line) and interference terms. We calculate the Higgs signal in the total cross section and bb invariant mass distribution.