weak force

>>8650703
These are not notes of the Weak force, they are noted on the Standard Model. The weak force does not involve quarks, gluons, and their composites.

>>8650720
oh so I just described the Standard Model not the weak force?

>>8650720
oh right it's supposed to be notes for both the strong and weak force. forgot to put that in there, was high

>>8650720
>The weak force does not involve quarks
Both W and Z Bosons couple to quarks.

>>8650703
>> three quarks make up a hadron
there are two types of hadron: baryons (3 quarks) and mesons (1 quark + 1 antiquark)
>> a set of the three-colored quarks is held together by a gluon that travels to each quark and changes its color
it's true that gluons are holding the quarks together, but it's more complicated than one gluon travelling around
>> the strange, charm, top, and bottom flavor all decay into either an up or down flavor
an up-type quark can change to a down-type quark via W-Boson exchange, that's called "Flavor changing charged current". Look up CKM-Matrix for all possible interactions
>> a neutron has one up-flavored quark and two down-flavored quarks
It's stricter than up-flavored and down-flavored, a neutron has 1 up-quark and 2 down-quark, there's for instance no charm-quark
>> a proton has two up-flavored quarks and one down-flavored quark
same here, 2 up-quarks, 1 down-quark
>> a neutrino carries either a W boson or a Z boson
No idea what you want to say with 'carry', but neutrinos can couple to W and Z bosons, yes
>> a neutrino can pass its boson to an atom via the weak force
>> a positively charged W boson can go into a neutron
>> It it does it changes one of the down-flavored quarks to an up-flavored quark
>> this causes there to be two up-flavored quarks in the hadron
>> therefore the neutron turns into a proton
>> this changes the element of the atom
Ok, you're describing beta decay here, but your wording is weird: what happens is a down-quark of a neutron emits a W-boson, turning the down into an up quark, so the neutron changes into a proton. the W-boson then decays into an electron and an anti-electron neutrino.

>>8651128
I never said the weak force does not involve quarks. in fact i said the exact oppoosite

>>8651145
>the W-boson then decays into an electron and an anti-electron neutrino.
So when a neutrino and antineutrino pair annihilate you get a W-boson instead of a photon? Or do you get both? And why is this different from a Z-boson, what will that decay into?

>No idea what you want to say with 'carry', but neutrinos can couple to W and Z bosons, yes
So can there exist a neutrino that's completely uncoupled? I'm not OP btw, but I'm also curious about the mechanics of the weak interaction. Flavor changing always seemed like a very weird thing for a force to do, it's so different from the other forces which are just attraction/repulsion.

>>8651200
>So when a neutrino and antineutrino pair annihilate you get a W-boson instead of a photon? Or do you get both? And why is this different from a Z-boson, what will that decay into?
You can't get a W boson from a neutrino-antineutrino pair because the W has an eletrical charge, but a (anti)neutrino doesn't. The only way a neutrino and an anti-neutrino can couple is via the (neutral) Z-Boson. The photon is also neutral but it just couples to charged particles, therefore not to neutrinos.
A Z-Boson can decay to a particle-antiparticle pair, so lepton-antilepton (including neutrino-antineutrino) or quark-antiquark.
>
>So can there exist a neutrino that's completely uncoupled? I'm not OP btw, but I'm also curious about the mechanics of the weak interaction. Flavor changing always seemed like a very weird thing for a force to do, it's so different from the other forces which are just attraction/repulsion.
Maybe there's confusion about what "coupling" means. When a neutrino couples to a W boson for instance it doesn't mean that the neutrino is carrying a W boson with it. Coupling just means that there can be an interaction between these particles. So yeah, a neutrino can fly around "uncoupled", but it can always interact with a Z or W boson.
You can read something about Feynman diagrams, in this picture coupling means that there is a vertex in a diagram where particles meet.

>>8651244
>You can't get a W boson from a neutrino-antineutrino pair because the W has an eletrical charge
Oh, I completely misunderstood then. W-bosons literally decay into an electron and an antineutrino. I thought when you said "electron" it was short for "electron neutrino". That's very interesting. So a high energy photon decays into an electron anti-electron pair (or is this only true for virtual photons?) and a W-boson decays into an electron antineutrino pair and the Z-boson decays into a neutrino anti neutrino pair. Just going by rest mass of the particles, this means that gamma ray photons have more energy than W-bosons which have more energy than Z-bosons? For some reason I thought the W and Z bosons would have higher energy than photons, are you sure that a photon isn't released as well when the W and Z decay? I also heard that at higher energies, where the electro-strong force and weak force combine, the photon and W-boson are both transformed into some new higher energy boson. I guess this higher energy boson can potentially decay into any two particles.

>>8651244
>So yeah, a neutrino can fly around "uncoupled", but it can always interact with a Z or W boson.
Oh, so is this part of the reason neutrinos are so hard to observe, they only couple with a Z or W boson. Actually if I recall correctly, the neutrino can couple to a photon but only weakly. Where does this "weak coupling" appear, and how would you represent it on the Feynman diagrams? Also is it possible for a particle to be coupled by two bosons at once? I don't think there's anything physically making this impossible only that it's extremely rare.