The last line is a hoot. They speak as if this is still proof the DM exists … when it is just the opposite.The Large High Altitude Air Shower Observatory (LHAASO), located high up on the edge of the Tibetan Plateau, in China’s Sichuan province, searches for gamma rays from the Milky Way galaxy and beyond. … snip …
The LHAASO team sifted such measurements for signs of gamma rays produced by the decay of heavy dark matter within the galaxy. … snip … The results of the LHAASO search were published in a recent issue of Physical Review Letters.
According to mass models of the Milky Way, dark matter density should be the greatest near the galactic centre. Thus, if decaying dark matter produces high-energy gamma rays, the measured flux should vary between survey areas. As no such difference was detected, the researchers concluded that PeV-mass dark matter has a lifetime of at least a billion trillion years (10 21 years).
By the way, the cost of building LHAASO (not operating costs) was 1.2 billion yuan ... roughly $180 million.
Thankfully it's the Chinese tax payers' problem.