Dark matter and Antimatter-matter

[RyanH42]

We know that in the Baryogenesis happened a asymmetry between baryons and antibaryons.Here Is matter only BM(baryonic matter) or BM+DM.

If its only BM so we have extra DM which its a matter.So the Baryogenesis solved ? (Here of course it can't be solved cause there's a big difference between BM and DM but at least we have matter superiority)

 

[Orodruin]

Baryogenesis is the creation of baryons over anti-baryons (as the name suggests). Baryons are made of quarks and not even leptons are a priori included in baryogenesis.

There are theories where also the dark matter sector contains an asymmetry, which in those theories by design is related to the baryon asymmetry. The common name for theories of this sort is asymmetric dark matter (ADM).

 

[RyanH42]

Baryogenesis is the creation of baryons over anti-baryons (as the name suggests). Baryons are made of quarks and not even leptons are a priori included in baryogenesis.

I didnt noticed that. And I don't know why.
There are theories where also the dark matter sector contains an asymmetry, which in those theories by design is related to the baryon asymmetry. The common name for theories of this sort is asymmetric dark matter (ADM).
So there's a anti DM ? Is that violates or affects the curvature of universe (Cause there will be extra energy)

 

[Orodruin]

So there's a anti DM ? Is that violates or affects the curvature of universe (Cause there will be extra energy)

We do not know the answer to this question. In many theories, including the very popular SUSY neutralino, dark matter is its own anti-particle. In ADM models, DM is distinct from anti-DM and the asymmetry is such that there is no (or very little) anti-DM in the Universe today.

 

[Chalnoth]

I didnt noticed that. And I don't know why.
There are theories where also the dark matter sector contains an asymmetry, which in those theories by design is related to the baryon asymmetry. The common name for theories of this sort is asymmetric dark matter (ADM).
So there's a anti DM ? Is that violates or affects the curvature of universe (Cause there will be extra energy)

In most models, dark matter is made out of nearly equal parts matter and anti-matter, particles which only annihilate with one another slowly due to their weak interactions.

 

[RyanH42]

f there's anti DM, and DM decays antimatter, then If anti DM decays we will get matter.Which it explains why there's dark matter no anti DM and no anti mattet ?

 

[Chalnoth]

f there's anti DM, and DM decays antimatter, then If anti DM decays we will get matter.Which it explains why there's dark matter no anti DM and no anti mattet ?

The term "dark matter" typically refers to both matter and anti-matter components of any dark matter that may exist.

 

[Orodruin]

Also, by energy conservation and most often charge conservation, a particle cannot decay to its anti particle and something else. Some times you can have particle-antiparticle oscillations, but these go both ways.

 

[Mordred]

One possibility, proposed at one time is DM as sterile neutrinos. Here is a relevant paper.

http://arxiv.org/abs/1306.4954

I haven't heard too much on this in the past two years. Though I do encounter its possibility in numerous SO(10) MSSM papers. I've been digging up some papers on the Pati-Salam subgroup. Which involves left-right hand chirality.My two better finds In this is the following

SO(10) A La Pati-Salam

http://arxiv.org/pdf/hep-ph/0204097
Another helpful article is this gem

The Phenomenology of Right Handed Neutrinos
http://arxiv.org/abs/1303.6912

from what I've read its still one possibility.

 

[Chronos]

Possible evidence for sterile neutrinos was announced by two papers released nearly the same time in 2014- re:http://arxiv.org/abs/1402.2301 and http://arxiv.org/abs/1402.4119v1. They have been collectively cited nearly 400 times since release. The enthusiasm for sterile neutrinos as DM candidate particles has waned somewhat, but, remains in play.

 

[Mordred]

Possible evidence for sterile neutrinos was announced by two papers released nearly the same time in 2014- re:http://arxiv.org/abs/1402.2301 and http://arxiv.org/abs/1402.4119v1. They have been collectively cited nearly 400 times since release. The enthusiasm for sterile neutrinos as DM candidate particles has waned somewhat, but, remains in play.

Thanks I recall reading those papers but had lost track of them. Glad to see you kept the links to them.

 

[Chronos]

You probably recall I was the one who brought them up last year.

 

[Mordred]

You probably recall I was the one who brought them up last year.

Yep I do.