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Type: Journal article
Title: γZ box corrections to weak charges of heavy nuclei in atomic parity violation
Other Titles: GammaZ box corrections to weak charges of heavy nuclei in atomic parity violation
Author: Blunden, P.
Melnitchouk, W.
Thomas, A.
Citation: Physical Review Letters, 2012; 109(26):1-5
Publisher: American Physical Soc
Issue Date: 2012
ISSN: 0031-9007
Statement of
P. G. Blunden, W. Melnitchouk, and A. W. Thomas
Abstract: We present a new dispersive formulation of the γZ box radiative corrections to weak charges of bound protons and neutrons in atomic parity violation measurements on heavy nuclei such as ¹³³Cs and ²¹³Ra. We evaluate for the first time a small but important additional correction arising from Pauli blocking of nucleons in a heavy nucleus. Overall, we find a significant shift in the γZ correction to the weak charge of ¹³³Cs, approximately 4 times larger than the current uncertainty on the value of sin²θ[sub]W, but with a reduced error compared to earlier estimates.
Rights: © 2012 American Physical Society
DOI: 10.1103/PhysRevLett.109.262301
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