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Determining a mediating force of an Interaction

by Wornstrom!!
Tags: determining, force, interaction, mediating
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Wornstrom!!
#1
Feb21-12, 06:13 PM
P: 1
What kind of force mediates the reaction:

K- + alpha(ppnn) -> pi- + "hypernucleus"(ppn lambda)
s(u) + (uud + uud + udd + udd) -> d(u) + (uud + uud + udd + uds)
(u) is anti u

We need to explain which force mediates this reaction.

I am pretty sure it does not involve the weak force because there is no flavor change of any quarks, they are just rearranged. I am leaning towards the strong force because the interaction involves nucleons although I know that is a bad argument. Is there a change in isospin? In what interactions is isospin conserved and what interaction allow a change in isospin?

So I am leaning towards strong interaction but I really have no reason to support this
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mathman
#2
Feb22-12, 03:36 PM
Sci Advisor
P: 6,058
Since the reaction involves quarks being rearranged it has to be the strong force.


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