Einstein wins again! Quarks obey relativity laws, Large Hadron Collider finds

[Admin]

Do top quarks, nature's heaviest elementary particle, obey Einstein's rules at all times of day and night? Scientists at the Large Hadron Collider have the answer.

Einstein wins again! Quarks obey relativity laws, Large Hadron Collider finds : Read more

 

[Unclear Engineer]

I am still wondering how a quark can be a "fundamental" particle when the combination of 2 down quarks and 1 up quark (a neutron) can become a combination of one down quark and 2 up quarks ( a proton) by emitting an electron, which is also supposed to be a "fundamental" particle that is not composed of quarks at all, and quarks are not supposedly containing electrons.

Typically, I see something like this from https://en.wikipedia.org/wiki/Quark :
"A quark of one flavor can transform into a quark of another flavor only through the weak interaction, one of the four fundamental interactions in particle physics. By absorbing or emitting a W boson, any up-type quark (up, charm, and top quarks) can change into any down-type quark (down, strange, and bottom quarks) and vice versa. This flavor transformation mechanism causes the radioactive process of beta decay, in which a neutron (n) "splits" into a proton (p), an electron (e−) and an electron antineutrino (νe) (see picture). This occurs when one of the down quarks in the neutron (udd) decays into an up quark by emitting a virtual W− boson, transforming the neutron into a proton (uud). The W− boson then decays into an electron and an electron antineutrino.[72]"

For me, that indicates something entirely different from "building blocks" when a quantum physicist says "fundamental particle".