Origin of discrepancy in theoretical value of polarizability correction to (mu-he-4)+ energy-levels

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1976
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Abstract
Different approaches in calculating the polarizability correction to the energy levels of the muonic 4 He ion are compared. These calculations disagree with each other by giving results 3 to 10 times larger than the experimental uncertainty. The origin of the major discrepancy is traced to the treatment of the nuclear excitations. It is shown that the experimental value of the electric polarizability of 4 He provides a crucial restriction on model calculations.
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Bernabeu Alberola, José; Jarlskog, Cecilia (1976) Origin of discrepancy in theoretical value of polarizability correction to (mu-he-4)+ energy-levels Physics Letters B 60 2 197 200
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