Yes... it does seem analagous to the muon moment which caused Rabi to utter that quip. I am always fascinated by evidence that hints at something deeper and outside of the zone of competency of our current best theoretical frameworks and mental superstructures. An endless re-confirmation of the Standard Model becomes just more of the same. Evidence that challenges our base-line assumptions is far more interesting, for it forces us to re-think that which we thought we knew. -chris On Fri, Nov 22, 2019 at 5:42 PM, Lawrence Crowell<goldenfieldquaterni...@gmail.com> wrote: I guess as I. Rabi said, "Who ordered that?" LC
On Wednesday, November 20, 2019 at 7:09:31 PM UTC-6, cdemorsella wrote: New evidence supporting the existence of the hypothetic X17 particle A.J. Krasznahorkay, M. Csatlos, L. Csige, J. Gulyas, M. Koszta, B. Szihalmi, J. Timar, D.S. Firak, A. Nagy, N.J. Sas, A. Krasznahorkay(Submitted on 23 Oct 2019) We observed electron-positron pairs from the electro-magnetically forbidden M0 transition depopulating the 21.01 MeV 0− state in 4He. A peak was observed in their e+e− angular correlations at 115∘ with 7.2σ significance, and could be described by assuming the creation and subsequent decay of a light particle with mass of mXc2=16.84±0.16(stat)±0.20( syst) MeV and ΓX= 3.9×10−5 eV. According to the mass, it is likely the same X17 particle, which we recently suggested [Phys. Rev. Lett. 116, 052501 (2016)] for describing the anomaly observed in 8Be. https://arxiv.org/abs/1910. 10459 The values for the hypothetical x17 boson that this team observed with the Helium (4) source aligns closely to those observed earlier with the Berylium (8) source. Here is their summary: In summary, we have observed e+e− pairs from an electro-magnetically forbidden M0 transition depopulating the 21.01 MeV 0− state in 4He. The energy sum of the pairs corresponds to the energy of the transition. The measured e+e−angular correlation for the pairs shows a peak at 115∘, supporting the creation and decay of the X17 particle with mass of mXc2=16.84±0.16(stat)±0.20( syst)MeV. This mass agrees nicely with the value of mXc2=17.01 ±0.16 MeV we previously derived in the 8Be experiment kr16 ; kra17 ; kra1 9 . The partial width of the X17 particle decay is esimated to be: ΓX= 3.9×10−5 eV. We are expecting more, independent experimental results to come for the X17 particle in the coming years. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/d482ea8d-4fd2-472f-a814-bf857aef51ca%40googlegroups.com. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/1015947054.4341745.1574476183956%40mail.yahoo.com.
