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Particle Physics and the Higgs for High School Kids. (Quark ... - HEP

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A(w + w − → w + w − )=−<br />

[<br />

2 M H<br />

2 +<br />

v 2<br />

( M<br />

2<br />

H<br />

The <strong>Higgs</strong><br />

v<br />

) 2<br />

1<br />

s − M 2 H<br />

+<br />

( M<br />

2<br />

H<br />

v<br />

)<br />

after some manipulations, can be cast into <strong>the</strong> result of eq.(1<br />

W<br />

W +<br />

W<br />

W −<br />

•<br />

W<br />

W −<br />

W<br />

H<br />

• •<br />

W<br />

+ W<br />

W<br />

W<br />

ure 1.15: Some Feynman diagrams <strong>for</strong> <strong>the</strong> scattering of W bo<br />

se amplitudes will lead to cross sections σ(W + W − → W + W −<br />

could violate <strong>the</strong>ir unitarity bounds. To see this explicitly,

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