The observed 20 GeV gamma rays as evidence for galactic dark matter halo or something else?

I learned of a very interesting recent finding claiming evidence for galactic dark matter (see this). Gamma rays with 20 GeV energy have been detected. They could emerge from the decays of a particle with mass 40 GeV.

A possible TGD based interpretation could be as decay products of p-adically scaled up pions. TGD strongly suggests a scaled up copy of hadron physics with the scaling factor for mass scale equal to 2⁹=512 and there are indeed several indications for its existence. I have proposed (see this) that the transformation of the hadrons of M₈₉ hadron physics for which mass scales is by factor 512 higher than for the ordinary hadron physics would be responsible for both solar wind and radiation and would occur at the surface of the Sun by the so-called p-adic cooling (see this and this), which would involve a cascade reducing the p-adic mass scale of hadron physics by powers of two so that eventually eventually hadrons of the ordinary M₁₀₇ would emerge. Powers of 2 for mass scales are indeed favored by the p-adic length scale hypothesis. Mersenne primes are good candidates for the p-adic primes defining stable copies of hadron physics and also of the standard model.

The mass scale of the pion of M₈₉ hadron physics would be by a factor 512 2⁹ higher than for the pion of the ordinary hadron physics. In the recent case the scaling factor for the ordinary pion mass giving mass of 40 GeV would be 11 percent larger than 256= 2⁸. Deviation is 11 per cent. The pion with mass scale 2⁸ m_π could appear at the first step in the p-adic cooling. Could the particle in question correspond to an unstable hadron physics with p∼ 2⁹¹?

There is also considerable evidence for gamma rays with energy very near to electron mass. They could come from what I call electropions predicted by TGD and having with mass slightly larger than 2×m_e (see this). There is also evidence for the leptopions assignable to muon and tau.

Electropions would be dark in a different sense than galactic dark matter: they would have a large value of effective Planck constant h_eff implying that their Compton size scale is scaled up from one half of electron Compton length to the size scale of atoms. Large values of h_eff are predicted at quantum criticality implying long length scale quantum fluctuations and in this case the quantum criticality means ability to overcome Coulomb wall. This would explain why electropions have not been observed as elementary particles in say decays of weak bosons. This notion of darkness explains the well-known mysterious gradual disappearance of baryons during the cosmic evolution as a transformation of protons to dark protons with very large gravitational Planck constant.

In the same way, the hadrons of M₈₉ would be created at quantum criticality agaisnt transformation of M₁₀₇ to M₈₉ hadrons and h_eff=512 would guarantee that at quantum criticality their Compton length is the same as for ordinary hadrons.

In TGD, galactic dark matter halo would not be an explanation for the 20 GeV gamma rays since there would be any dark matter halo. In TGD, the galactic dark matter would be dark energy assignable to extremely thin and massive objects, cosmic strings (see this), which are the key elements in the TGD view of the formation of galaxies and stars and explain the flat velocity spectrum without any additional assumptions. Galactic blackholes would emerge in the collision of cosmic strings and both electropion and the now discovered particles could relate to the decay of these cosmic strings.

For a summary of earlier postings see Latest progress in TGD.

For the lists of articles (most of them published in journals founded by Huping Hu) and books about TGD see this.