Dark matter direct seach(dark matter interaction with SM particle) analysis is catagorized in two way 1. spin independent 2. Spin dependent but for indirect search (dark matter annhilate in SM particle)there now such catagory . can any please! explain why there is no spin dependent and spin inpendent annhilation of dark matter particle?
This has been and is ongoing, an extensive study of such processes, cf. for instance, https://arxiv.org/abs/1305.1611 for just one example.
It suffices to put the phrase
spin dependent analysis dark matter
in one’s favorite search engine to find many more...
Abdul Rahaman Shaikh In the paper linked below you will see that the dark matter particle is a form of dineutron created in a galaxy formation event which is the way matter formed in the universe.
We can think of this dark matter particle as a dineutron although it might not be identical to dineutrons that we create in a laboratory. These dark matter particles contribute neutrons to star formation and after a star system forms there will be no residual dark matter.
Viewing the question in this context you can see that there is unlikely to be dark matter annihilation but instead energy released as dark matter bonds together.
i don’t believe spin properties are important in this context once the dark matter has formed. In the galaxy formation event the formation of neutrons with an aligned axis of spin will result in around 85% pairing while the remaining single neutrons decay to form protons and electrons and thus hydrogen.
Conference Paper The Explanation for Dark Matter and Dark Energy
Richard
“…It suffices to put the phrase
spin dependent analysis dark matter
in one’s favorite search engine to find many more...….”
- yeah, and rather long time ago discussions “how many angels can fit on the tip of a needle” were rather popular as well; where the discussants rather well understood at least what is “the tip of a needle”, and only angels were transcendent;
- whereas the numerous discussants in mainstream physics vividly discuss how - completely transcendent for them - “dark matter” interacts, annihilates, etc., etc., etc.; the mainstream physics in too many cases now looks as rather strange physics.
Now there exist only one scientifically rational dark matter hypothesis in the again uniquely scientifically rational initial cosmological model – see the Shevchenko-Tokarevsky’s informational physical model
https://www.researchgate.net/publication/355361749_The_informational_physical_model_and_fundamental_problems_in_physics, section “Cosmology”, where, including, practically for sure the “matter-antimatter asymmetry” problem is scientifically solved, just basing on again with a well non-zero probability existent now “dark matter particles”.
Cheers
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