The whole low energy SUSY theory appears to be in trouble. The breaking of SUSY as the TeV scale appears not to work. This eliminates the neutralino, which is a condensate of supersymmetric partners of the Z particle and photon, appears to not exist. This does remove to a fair degree a SUSY predicted WIMP particle, the neutralino.
LC On Friday, October 29, 2021 at 10:20:20 AM UTC-5 jessem wrote: > When you say "WIMPs are most likely ruled out" is that related to failure > to find supersymmetric particles at LHC? (Correct me if I'm wrong, but my > understanding was that many physicists hoped supersymmetry would solve the > 'naturalness problem' of the weak energy scale in a way that required > supersymmetric particles to have masses in that range, but advocates of the > landscape model like Susskind thought there needn't be any 'explanation' > for the energy scales of different forces beyond the anthropic principle.) > Or are there other reasons to rule them out, like cosmological simulations > based on WIMPs being unable to match certain cosmological observations > about the real universe? > > Jesse > > On Fri, Oct 29, 2021 at 7:15 AM Lawrence Crowell <[email protected]> > wrote: > >> On Thursday, October 28, 2021 at 9:08:55 PM UTC-5 [email protected] >> wrote: >> >>> Lawrence, any guesses as to what Dark Matter could be? Nobody can find >>> any evidence of WIMPS and now sterile neutrinos seems to have bit the >>> dust. Would you bet your money on Axions, or some modification of General >>> Relativity (teleparallel gravity perhaps) or none of the above? >>> >>> John K Clark >>> >>> ========== >>> >>> >>> >> I have no commitment to any particular theory. Dark matter might turn out >> to be some new physics involving mass-energy in an entirely different form >> from what we traditionally know as particles or fields. Dark energy is most >> likely some sort of vacuum energy, where the big unknown is how the vacuum >> energy is so small compared to what QFT predicts. Dark matter is not >> homogeneous and isotropic as is dark energy that is presumed to give the de >> Sitter-like expansion curvature. Yet it is still possible that dark energy >> is some vacuum type of physics. I have pondered that the large energy >> excess we expect for dark energy might in fact be some localized form of >> vacuum energy that condensed in the early universe, and this excess remains >> as DM. >> >> The phenomenologies proposed so far seem to be falling apart. WIMPs are >> mostly likely ruled out. Sterile neutrinos appear to be gone. Axions remain >> a possibility, though so far attempts to detect them have come up null. As >> a result the most honest thing that can be said is we really have no >> certainty about the nature of DM. >> >> LC >> >> -- >> > 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 [email protected]. >> > To view this discussion on the web visit >> https://groups.google.com/d/msgid/everything-list/f24dd18e-7185-4cf5-88a7-9e3444da6642n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/everything-list/f24dd18e-7185-4cf5-88a7-9e3444da6642n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/e126d7f2-a194-4a6b-80f7-757e38088b00n%40googlegroups.com.
