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arxiv: hep-ph/0511165 · v1 · submitted 2005-11-14 · ✦ hep-ph

GUT angle minimises Z⁰ decay

classification ✦ hep-ph
keywords angledecayminimisestotalvaluebranchingconsiderationelements
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The GUT value of Weinberg's angle is also the value that minimises the total square matrix elements of $Z^0$ decay, independently of any GUT consideration, and thus the one that maximises the neutrino branching ratio against total width. We review the proof of this result and some related facts.

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