Linked Questions

3
votes
2answers
265 views

Is it possible that there are more than 6 quark flavors/more than 3 generations? [duplicate]

I thought that things like the top quark don't exist in nature because they're super unstable and we can only observe them after high-energy collisions (e.g. LHC) Is it possible to make even more ...
0
votes
0answers
70 views

Why aren't there more than three generations of the leptons and quarks? [duplicate]

There are three generations of electrons, neutrinos, and quarks. The second and third generations of electrons and quarks are unstable and decay into lighter particles. Why are there exactly three ...
0
votes
0answers
38 views

Current thinking on the reasons for 3 particle generations [duplicate]

A question was asked a number of times on this forum, mostly in 2011-2013, of the theoretical reasons for exactly 3 generations of elementary particles. The answers mentioned that certain observed ...
17
votes
4answers
2k views

Origin of lepton/quark generations?

What theoretical explanations exist for the fact that there are three generations of leptons and quarks? I'm not so much asking why there are exactly 3 generations, but rather what makes electron, ...
12
votes
2answers
601 views

Alejandro Rivero's correspondence: diquarks and mesons as superpartners of quarks and leptons

The idea of “hadronic supersymmetry” originated in the mid-1960s and derives from the observation that baryons and mesons have similar Regge slopes, as if antiquarks and diquarks are superpartners. ...
6
votes
3answers
680 views

Does string theory explain the existence of 3 generations of quarks/leptons?

I am wondering whether string theory explains the existence of 3 families of quarks/leptons or not. I have a very limited understanding of string theory, as of now, and I have a mathematical ...
6
votes
4answers
574 views

GUT that includes all 3 particle families into a large group?

Explaining SU(5) GUTs (using the first particle family as an example) in the last SUSY lecture 10, Lenny Susskind mentioned that there are at present no ideas how to combine simultaneously all 3 ...
6
votes
1answer
558 views

What is the origin of flavor? [duplicate]

Possible Duplicate: Origin of lepton/quark generations? In the standard model (and in nature), Fermions appear in different generations, or flavors. Besides up and down quarks and electrons, ...
3
votes
1answer
186 views

Could neutrinos have more than 3 flavors?

Since neutrino can change from one flavor to another periodically, given sufficient time could a new flavor emerges or is there a well tested rule that only permits 3 flavors for neutrino?
0
votes
1answer
168 views

A few questions on quarks, gluons and the strong force

I wanted to answer for myself some pretty fundamental questions pertaining to the strong interaction, color charge and quarks, but I'm sort of stumbling on a few. So I wanted to find the reason/...