Estimate the branching ratios for the four-lepton decays (10.58) and (10.60) of the Higgs boson by relating
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Figure 10.29
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Table 10.1 Predicted decay widths T and branching ratios B for the main decay modes of the Higgs boson and for the rare but important decay но Y. The errors arise from uncertainties in the input parameters. Г(МeV) Decay mode B (57.5 + 1.8) x 10-2 (21.6 ± 0.9) × 10-2 (8.6 + 0.8) x 10-2 (6.3 +0.3) × 10-2 (2.9 + 0.3) × 10-2 (2.7 +0.1) x 10-2 (2.3+0.1) × 10-3 bb 2.35 + 0.11 w+fƒ' 0.88 +0.01 0.35 +0.02 gg т+т 0.26 ± 0.01 0.12 +0.01 (11.0±0.1) × 10–3 (9.5 ± 0.1) × 10–3 Z°ff 25 • Data Background Higgs signal 20 15 10 100 120 140 160 180 M„(GeV/c*) 41 Events/(3GEV/c) 80
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The decay of the Higgs boson to four charged leptons denoted H 0 4 is dominated by the mechanism sho...View the full answer
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