The role of the continuum and the spurious 1- transitions in incoherent mu - e conversion rate calculations

Details The role of the continuum and the spurious 1- transitions in incoherent mu - e conversion rate calculations The role of the continuum and the spurious 1- transitions in incoherent mu - e conversion rate calculations

2006-04-20

arxiv.org/abs/nucl-th/0604050v1

Czech.J.Phys. 56 (2006) 481-494

Physics

Nuclear Physics

Nuclear Theory

7 pages, incl. 4 figures; Proc. MEDEX'05 Meeting, Corfu, Greece, Sept.2005

Scientific paper

10.1007/s10582-006-0112-8

By using the Continuum RPA (CRPA) method, the incoherent transition strength of the exotic mu - e conversion in the 208Pb and 40Ca nuclei is investigated. The question whether excited nuclear states lying high in the continuum give an important contribution to the incoherent rate is addressed. The admixture of spurious components in the rate coming from 1- excitations is investigated in detail by using the self-consistent CRPA with Skyrme interactions as well as a less consistent version and by employing two ways to remove the spurious strength: the use of effective operators or simply the exclusion of the spurious state appearing close to zero energy. In all cases, the correction achieved is quite large.

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