Parity nonconservation in atomic thallium.
作者： Persis S. Drell , Eugene D. Commins
关键词: Pseudoscalar 、 Stark effect 、 Polarization (waves) 、 Atomic physics 、 Amplitude 、 Linear polarization 、 Photon 、 Valence (chemistry) 、 Zeeman effect 、 Physics
摘要: We present a detailed description of new observations parity nonconservation in the 6/sup 2/P/sub 1/2/..-->..7/sup 1/2/ transition (293 nm) atomic 2 /sub 81//sup 05/Tl. Linearly polarized 293-nm photons, polarization epsilon-c-circumflex, are absorbed by atoms crossed E and B fields. The probability for each Zeeman component contains pseudoscalar term, proportional to epsilon-c-circumflexxBepsilon-c-circumflexxE x B, arising from interference between parity-nonconserving E1 amplitude scrE/sub P/ Stark ..beta..E. This is detected observation fluorescence at 535 nm accompanying decay (7/sup 1/2/..-->..) 7/sup 2/S/sub 1/2/..-->..6/sup 3/2/. Systematic corrections, due imperfect linear misaligned fields, determined precisely auxiliary experiments found be small. Our final result: Im(scrE/sub P//..beta..)Vertical Bar/sub expt/ = -(1.73 +- 0 .26 0.07) mV/cm, where first uncertainty statistical, second systematic, compared with results other theoretical estimates based on standard SU(2) U(1) electroweak model.
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