Beyond the Standard Model with Effective Lagrangians

Physics – High Energy Physics – High Energy Physics - Phenomenology

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(to be published in Proceedings of the Coral Gables Conference, Jan.\ 25--27, 1993,) 15 pages, PHYZZM, UM-TH-93-12. (PHYZZM ha

Scientific paper

An Effective Lagrangian description is useful for describing potential physics beyond the Standard Model. The method is illustrated by reference to interactions among the electroweak bosons ($W^\pm$ \& $Z^0$). The resulting estimates of the magnitude of these corrections suggest that they would be at best marginally detectable at high energy $e^-e^+$ colliders or hadron colliders. In loop calculations, contrary to lore, such deviations from Standard Model self-couplings never give observable corrections that grow as a power of the scale $\Lambda$ at which new physics enters, so there are never effects proportional to powers of $\Lambda/M_W$.

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