Silvestru Posted April 28, 2017 Share Posted April 28, 2017 This will be very simple for most of you but please clarify something for me. A Proton/Neutron is composed of two up quarks and one down quark/one up quark and two down respectively and they are held in place by gluons. Protons/Neutrons are fermions but gluons are bosons. Can someone please clarify? Thank you. Link to comment Share on other sites More sharing options...
swansont Posted April 28, 2017 Share Posted April 28, 2017 Anything with half-integral spin are Fermions. they behave in certain ways, owing to spin statistics. Most notably, two identical fermions can't be in the same state. Gluons have integral spin (spin 1), which means they are Bosons, like all force-mediating particles are. Link to comment Share on other sites More sharing options...
Silvestru Posted April 28, 2017 Author Share Posted April 28, 2017 (edited) Yes I understand that but a Proton is made out of 3 quarks held by gluons so I will assume it's made out of quarks and gluons. Edited April 28, 2017 by Silvestru Link to comment Share on other sites More sharing options...
Mordred Posted April 28, 2017 Share Posted April 28, 2017 (edited) Yes but you can combine fermions to make a boson or bosons can add up to make a fermion Edited April 28, 2017 by Mordred Link to comment Share on other sites More sharing options...
Bender Posted April 28, 2017 Share Posted April 28, 2017 How can bosons add up to make a fermion? Could you give an example? Link to comment Share on other sites More sharing options...
Mordred Posted April 28, 2017 Share Posted April 28, 2017 Sorry wasn't thinking clearly when I typed that. Too early in AM hadn't finished my first coffee. Link to comment Share on other sites More sharing options...
Bender Posted April 28, 2017 Share Posted April 28, 2017 Thanks for clearing that out. It happens to all of us Link to comment Share on other sites More sharing options...
Mordred Posted April 28, 2017 Share Posted April 28, 2017 lol gotta wake up first lmao Link to comment Share on other sites More sharing options...
Phi for All Posted April 28, 2017 Share Posted April 28, 2017 lol gotta wake up first lmao You probably opened the drapes too quick, and all those photons combined into a brick. Hangover much? Link to comment Share on other sites More sharing options...
Mordred Posted April 28, 2017 Share Posted April 28, 2017 lol Link to comment Share on other sites More sharing options...
swansont Posted April 28, 2017 Share Posted April 28, 2017 Yes I understand that but a Proton is made out of 3 quarks held by gluons so I will assume it's made out of quarks and gluons. The quarks are spin 1/2, so having 3 of them will leave you with something that has a half-integral spin. No matter how many gluons are around, you still have half-integral spin. You're going to have a Fermion. Link to comment Share on other sites More sharing options...
Pugdaddy Posted April 28, 2017 Share Posted April 28, 2017 You can't take the two ups and a down for a proton or the two downs and an up for a neutron too literally. There is a soup of things in the proton and neutron. Lots of gluons, lots of up, down, top, bottom, charmed and strange quarks all interacting with each other. At any one time there is a net positive charge in the proton because on average there are two more 2/3 positively charged up quarks and one more 1/3 negatively charged down quark in the soup giving a net one positive charge. The neutron having two down quarks at negative 1/3 and one up with positive 2/3 positive charge cancel out to make the neutron neutral in charge. 1 Link to comment Share on other sites More sharing options...
Silvestru Posted April 28, 2017 Author Share Posted April 28, 2017 Thank you guys It's clear for me now. It's really fun asking questions on this forum. People like SwansonT, Strange (he's scary), Mordred and many more make it fun. You guys really adapt your answers to the level of understanding of the person who asks. 1 Link to comment Share on other sites More sharing options...
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