In our discussion of the reaction e + + e μ + + μ , we completely

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In our discussion of the reaction e++ eˆ’†’ μ++ μˆ’, we completely neglected the Higgs exchange diagram of Figure 10.30, compared with the dominant diagrams of Figures 10.2(a) and (b). Since the Higgs contribution is obviously largest at ECM= MH, where the contributions of Figures 10.2(a) and (b) are expected to be comparable, justify this approximation by using the appropriate H0branching ratios to estimate the total cross-section at ECM= MHthat would arise from Figure 10.30 alone, and compare with estimates of the cross-sections which would arise from Figure 10.2(a) alone. Make the same comparisons of the contributions from Figure 10.2(a) alone and Figure 10.2(b) alone at ECM= MZ.


Figure 10.2

e+ и

Figure 10.30

Н°

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Particle Physics

ISBN: 978-1118912164

4th Edition

Authors: Brian R. Martin, Graham Shaw

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