What Is the Minimum Energy Required for a Proton to React with Lithium?

[Ry122]

What minimum energy would the proton need to make the following reaction occur?
H + Li = Be + n
I know that the proton's amu needs to be equal to the left side of the equation's amu.
How does the proton's energy have anything to do with how much energy the result of the reaction has?

 

[Dick]

The protons amu doesn't have to equal the amu of left side. It's also bringing in kinetic energy. And E=mc^2. You probably aren't expected to actually compute the reaction kinematics, but at least balance energy on both sides, not mass.