Time Modulation of Orbital Electron Capture Decays of H-like Heavy Ions

Details Time Modulation of Orbital Electron Capture Decays of H-like Heavy Ions Time Modulation of Orbital Electron Capture Decays of H-like Heavy Ions

2009-09-07

arxiv.org/abs/0909.1287v1

Physics

Nuclear Physics

Nuclear Theory

5 pages

Scientific paper

According to experimental data at GSI, the rates of the number of daughter ions, produced by the nuclear K-shell electron capture (EC) decays of the H-like 140Pr58+, 142Pm60+ and 122I52+ ions, are modulated in time with periods T_{EC} of the order of a few seconds, obeying an A-scaling T_{EC} = A/20 s, where A is the mass number of the mother nuclei, and with amplitudes a^{EC}_d ~ 0.21. In turn, the positron decay mode of the H-like 142Pm60+ ions showed no time modulation of the decay rates. As has been shown in Phys. Rev. Lett. 103, 062502 (2009) and Phys. Rev. Lett. 101, 182501 (2008), these data can be explained by the interference of two massive neutrino mass-eigenstates. In this letter we give a reply on the comments on our paper Phys. Rev. Lett. 103, 062502 (2009) by A. Gal (arXiv:0809.1213v2).

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