1
$\begingroup$

If a WIMP interacts elastically with a nucleus, for which force they interact? Weak force? The same for neutrons, it interacts via strong force? The only elastic scattering i know is the Rutherford scattering.

$\endgroup$
1
$\begingroup$

WIMP is an acronym of Weakly Interacting Massive Particles, so it is a tautology to say that their interactions are with a weak force. This could be the electroweak force, or any other in more advanced grand unified models, elastically or inelastically the first order, i.e. higher probability , Feynman diagrams are with the carriers of that force.

The neutron is not an elementary particle, it is composed of quarks and a sea of antiquarks quarks and gluons (analogous to the proton here) . If you are asking of WIMP neutron elastic scattering, it will be with the appropriate weak force. If you are asking neutron +X elatic scattering, it will depend of what X is. If it is another hadron composed out of quarks and antiquarks it will be the strong force.

$\endgroup$
  • $\begingroup$ I forgot to add an information, I meant nuclear recoil not ordinary elastic scattering, is the same thing? $\endgroup$ – abbba Sep 2 at 19:20
  • $\begingroup$ @abbba sure, elastic scattering leads to recoil, of whatever type. $\endgroup$ – anna v Sep 2 at 19:25
  • $\begingroup$ The neutron may also interact weakly with other hadrons too, plus it has an extremely weak interaction electromagnetically. $\endgroup$ – Triatticus Sep 2 at 21:50
  • $\begingroup$ @Triatticus of course, quarks interact weakly too,but considering the enormous difference in the coupling constants between strong an weak,the weak is insignificant in neutron scattering. $\endgroup$ – anna v Sep 3 at 5:04
  • $\begingroup$ I'm merely stating for completeness of course $\endgroup$ – Triatticus Sep 3 at 9:12

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.