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Mass-symmetry breaking in three-body ions

V. I. Korobov·J. -M. Richard
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Abstract

The ground-state energy of three-body ions $(M^+,M^+,m^-)$ evolves when the like-charge constituents are given different masses. The comparison of $(m_1^+,m_2^+,m^-)$ with the average of $(m_1^+,m_1^+,m^-)$ and $(m_2^+,m_2^+,m^-)$ reveals a competition between the symmetric term and the antisymmetric one. The former dominates in the Born--Oppenheimer regime such as the (p,t,e) case, while the latter wins for H$^-$-like systems with two negative light particles surrounding a heavy nucleus. A comparison is also made with the case of baryons in simple quark models with flavour independence.

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V. I. Korobov, J. -M. Richard. 2004-06-28. Mass-symmetry breaking in three-body ions. https://doi.org/10.1103/physreva.71.024502

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