# Is there any evidence that dark matter can interact with ordinary matter through weak interaction?

+ 1 like - 0 dislike
942 views

Of course we know dark matter are involved in gravity interaction. But as we don't know what they are, I'm wondering whether we can guarantee that they are involved in weak interaction.

Is there a possibility that dark matter don't interact with ordinary matter( those in Standard Model) except gravity. If this is true, how can we find them？

recategorized Oct 16, 2014

+ 6 like - 0 dislike

This is a thought and not a proper answer but since we do not know what dark matter is this question is a bit point-less if you may. What I mean is that it depends on your model. If you take DM to be a supersymmetric particle, like the neutralino, then it can be involved in processes of the weak interaction according to the various MSSM-like models (and extensions of it of course). If it is the axion I am not quite sure about it since, again, it depends in the axion models. For example here (http://www.physics.ntua.gr/cosmo07/UniNet/Talks%20Thursday/Armillis.pdf) a PQ-like axion is coupled to some Higgses. MND I think is all gravitational but someone else, much more expert than myself, would have to confirm this.

I hope this helps a little bit.

*I forgot to mention the case of sterile neutrinos which in the models I am aware of they are not charged under any of the SM gauge groups and thus would not be involved in any weak interactions directly but byproducts of interactions among those would. See Shapsonikov's (among others) work for more details.

answered Oct 16, 2014 by (3,625 points)
edited Oct 19, 2014

 Please use answers only to (at least partly) answer questions. To comment, discuss, or ask for clarification, leave a comment instead. To mask links under text, please type your text, highlight it, and click the "link" button. You can then enter your link URL. Please consult the FAQ for as to how to format your post. This is the answer box; if you want to write a comment instead, please use the 'add comment' button. Live preview (may slow down editor)   Preview Your name to display (optional): Email me at this address if my answer is selected or commented on: Privacy: Your email address will only be used for sending these notifications. Anti-spam verification: If you are a human please identify the position of the character covered by the symbol $\varnothing$ in the following word:p$\hbar$ysicsOverfl$\varnothing$wThen drag the red bullet below over the corresponding character of our banner. When you drop it there, the bullet changes to green (on slow internet connections after a few seconds). To avoid this verification in future, please log in or register.