I Where can I find information about this nucleon mass coincidence?

stephen193
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mP - 3·Δm = mN - 4·Δm = 934,392,091.08 eV/c^2
I can't possibly be the first to notice this numerical coincidence, but my search skills are inadequate to find information about it, and I was hoping others could point me toward papers on the subject.

Neutron mass, mN: 939565420.52 (54)
Proton mass, mP: 938272088.16 (29)
[https://physics.nist.gov/cgi-bin/cuu/CCValue?mnc2mev|ShowSecond=neutron+mass+in+MeV&First=mpc2mev]

Δm = mN - mP = 1,293,332.36
mP - 3·Δm = 934,392,091.08
mN - 4·Δm = 934,392,091.08

What's going on, there?
 
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Try replacing Δm with mN-mP in the equations
 
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Ah, got it. Thanks!
 
Thread 'Why is there such a difference between the total cross-section data? (simulation vs. experiment)'

Thread 'Why is there such a difference between the total cross-section data? (simulation vs. experiment)'

Well, I'm simulating a neutron-proton scattering phase shift. The equation that I solve numerically is the Phase function method and is $$ \frac{d}{dr}[\delta_{i+1}] = \frac{2\mu}{\hbar^2}\frac{V(r)}{k^2}\sin(kr + \delta_i)$$ ##\delta_i## is the phase shift for triplet and singlet state, ##\mu## is the reduced mass for neutron-proton, ##k=\sqrt{2\mu E_{cm}/\hbar^2}## is the wave number and ##V(r)## is the potential of interaction like Yukawa, Wood-Saxon, Square well potential, etc. I first...
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