4.5 Article

Jastrow functions in double-β decay

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PHYSICAL REVIEW C
卷 83, 期 3, 页码 -

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AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.83.034317

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  1. US Department of Energy [DE-AC52-06NA25396, DE-FG02-97ER41019, DE-AC02-06CH11357]
  2. U.S. Department of Energy (DOE) [DE-FG02-97ER41019] Funding Source: U.S. Department of Energy (DOE)

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We use simple analytic considerations and a Monte Carlo calculation of nucleons in a box to argue that the use of Jastrow functions as short-range correlators in the commonly employed two-body cluster approximation causes significant errors in the matrix elements for double-beta decay. The Jastrow approach appears to agree with others, however, if many-body clusters are included. A careful treatment of the charge-changing analog of the nuclear pair density shows, in addition, that differences between the unitary correlation operator method and Brueckner methods for treating short-range correlations in double-beta decay are less significant than suggested by previous work.

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