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| - Atomic parity violation can compete with high-energy experiments in constraining electro-weak radiative corrections due to new physics with sufficient precision. More generally atomic experiments simply complements high-energy experiments since they probe at different energy scales and they have different functional dependances on the parameters of interest. - Atomic parity violation constraints are given by the Q lines on the plot. The measurements effectively measure the weak charge of an atomic nucleus. | |||||||
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| - Just as importantly, atomic experiments are much more sensitive to new tree-level physics. High-energy experiment currently work at the Z pole, and all other effects are highly suppressed relative to that. Atomic experiments work at zero energy and thus lose sensitivity as the square of the new mass as previously described. With the same precision, atomic experiment are much more sensitive to new tree-level physics at higher energy scales. |  | ||||||
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