[hongsy]

> Only a little over 1% the mass of a neutron is the three quarks normally listed.

Do you have a source for this?

[monocasa]

You can add up the mass of one up quark (2.2MeV) and two down quarks (4.7MeV each) and compare that to the mass of a neutron (939.565MeV)

[cwillu]

https://profmattstrassler.com/articles-and-posts/particle-ph... has a very good explanation.

[blobster]

https://www.newscientist.com/article/dn16095-its-confirmed-m...