Supersymmetric corrections to the Higgs boson decay widths in the MSSM

Within the left–right symmetric model (LRM), the decays [Formula: see text] where [Formula: see text] is an analog of the Standard Model Higgs boson, are considered. The widths of this decays are found in the third-order of the perturbation theory. Since the main contribution to the decay widths is caused by the diagram with the light and heavy neutrinos in the virtual state, then investigation of this decays could shed light upon the neutrino sector structure. The obtained decay widths critically depend on the charged gauge bosons mixing angle [Formula: see text] and the heavy–light neutrinos mixing angle [Formula: see text]. The LRM predicts the values of these angles as functions of the vacuum expectation values [Formula: see text] and [Formula: see text]. Using the results of the existing experiments, on looking for the additional charged gauge boson [Formula: see text] and on measuring the electroweak [Formula: see text] parameter, gives [Formula: see text] However, even using the upper bounds on [Formula: see text] and [Formula: see text], one does not manage to get the upper experimental bound on the branching ratio [Formula: see text] being equal to [Formula: see text]. The theoretical expression proves to be on two orders of magnitude less than [Formula: see text].

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Higgs boson decay widths

Weak Scale Supersymmetry ◽

10.1017/cbo9780511617270.021 ◽

2010 ◽

pp. 524-530

Author(s):

Howard Baer ◽

Xerxes Tata

Keyword(s):

Higgs Boson ◽

Decay Widths

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STARTLING EQUIVALENCES IN THE HIGGS-GOLDSTONE SECTOR BETWEEN RADIATIVE AND LOWEST-ORDER CONVENTIONAL ELECTROWEAK SYMMETRY BREAKING

International Journal of Modern Physics A ◽

10.1142/s0217751x05029265 ◽

2005 ◽

Vol 20 (27) ◽

pp. 6241-6246 ◽

Cited By ~ 2

Author(s):

F. A. CHISHTIE ◽

V. ELIAS ◽

T. G. STEELE

Keyword(s):

Higgs Boson ◽

Symmetry Breaking ◽

Electroweak Symmetry Breaking ◽

Boson Mass ◽

Higgs Boson Mass ◽

Electroweak Symmetry ◽

Decay Widths ◽

Order Of Magnitude

For the Higgs boson mass of ~ 220 GeV expected to arise from radiative electroweak symmetry breaking, we find the same lowest-order expressions as would be obtained from conventional electroweak symmetry breaking, given the same Higgs boson mass, for Higgs-Goldstone sector scattering processes identified with [Formula: see text], [Formula: see text], as well as for Higgs boson decay widths [Formula: see text], H → ZLZL. The radiatively broken case, however, leads to an order of magnitude enhancement over lowest-order conventional symmetry breaking for scattering processes [Formula: see text], ZLZL → HH, as well as a factor of ~ 30 enhancement for HH → HH.

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