# Is there any strong interaction between electrons?

+ 0 like - 0 dislike
363 views

The question is related to

http://physics.stackexchange.com/questions/266083/is-there-strong-interaction-between-electrons?noredirect=1#comment591030_266083

I thought that it won't appear at tree-diagram level. It could appear at higher order loop level (e.g. electron-electron exchange virtual photons, virtual photons exchange virtual quarks, virtual quarks involve strong force), e.g. arxiv.org/pdf/0902.3360v1.pdf Fig 29 (Though it is not precisely e-e interaction)

but someone argues that electron is lepton and hence cannot involve strong force at all.

Which is correct?

edited Jul 5, 2016

When some physicists say electron doesn't participate in strong interaction, they are simply referring to the vertices. On the other hand, if you allow higher orders, then everything in standard model interact with everything else.

+ 0 like - 0 dislike

Yes, there is some, but it is rather weak (sorry for pun). This "strong interaction" is indirect. Electrons interact directly with hadrons mostly electromagnetically. One can effectively increase the effects of indirect strong interaction with increasing the collision energy.

answered Jul 6, 2016 by (102 points)
+ 0 like - 0 dislike

No.

Quarks with color charge (and composite particles made by quarks like the proton and the neutron) feel the strong force. Electrons are not quarks. The strong force is mediated by gluons. Electrons don't emit/absorb gluons....

Of course quarks have also electromagnetic charge besides color charge and interact with electrons via electromagnetic interactions mediated by photons, so electrons are influenced by strong interaction in this sense. But then everything is influenced by everything else...

answered Jul 7, 2016 by (190 points)
edited Jul 7, 2016

 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$\hbar$ys$\varnothing$csOverflowThen 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.