The new “MUON G-2” result and supersymmetry
Astrocent, Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences, ul. Rektorska 4, 00-614, Warsaw, Poland
2 Instituto de Física Teórica (UAM/CSIC), Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain
3 Campus of International Excellence UAM+CSIC, Cantoblanco, 28049, Madrid, Spain
4 Instituto de Física de Cantabria (CSIC-UC), 39005, Santander, Spain
5 Kavli IPMU (WPI), UTIAS, University of Tokyo, 277-8583, Kashiwa, Chiba, Japan
Accepted: 2 December 2021
Published online: 17 December 2021
The electroweak (EW) sector of the Minimal Supersymmetric Standard Model (MSSM), with the lightest neutralino as Dark Matter (DM) candidate, can account for a variety of experimental data. This includes the DM content of the universe, DM direct detection limits, EW SUSY searches at the LHC and in particular the so far persistent discrepancy between the experimental result for the anomalous magnetic moment of the muon, , and its Standard Model (SM) prediction. The recently published “MUON G-2” result is within in agreement with the older BNL result on . The combination of the two results was given as , yielding a new deviation from the SM prediction of , corresponding to . Using this improved bound we update the results presented in Chakraborti et al. (Eur Phys J C 80(10):984, 2020) and set new upper limits on the allowed parameters space of the EW sector of the MSSM. We find that with the new result the upper limits on the (next-to-) lightest SUSY particle are in the same ballpark as previously, yielding updated upper limits on these masses of . In this way, a clear target is confirmed for future (HL-)LHC EW searches, as well as for future high-energy colliders, such as the ILC or CLIC.
© The Author(s) 2021
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