The discussion revolves around the concept of a "structureless particle," exploring its definition and implications in the context of particle physics. Participants examine the characteristics that qualify a particle as structureless, including mass, internal structure, and quantum properties.
Participants express differing views on the definition and characteristics of structureless particles, indicating that the discussion remains unresolved with multiple competing interpretations.
Some claims about the properties of structureless particles depend on definitions that may not be universally accepted, and there are unresolved questions regarding the implications of mass and internal quantum numbers.
Both electrons and quarks [as far as we know] are elementary particles (have no internal structure), both are also fermions and hence have half integer spin (i.e [itex]\pm1/2, \pm3/2, \pm5/2,...[/itex]). However, I do agree with quasar987's interpretation. If you google 'elementary particle' you should find some more information.BenTheMan said:Structureless particle? Maybe it has not internal quantum numbers? I.e. no spin.
According to current theory and experimental evidence, neutrinos have a small but finite mass. Out of curiosity why do you require that a structureless particle must be massless?daica said:According my opinion, structureless particles haven't its mass, size and aren't made up of more particles. For example, photon, neutrino are the structureless particles. However, they are still influenced by interactions (fundamental force as weak,electromagnetic, gravitational, strong ..).
Both electrons and quarks [as far as we know] are elementary particles (have no internal structure), both are also fermions and hence have half integer spin
Do you think that is an answer a 4-th grader would understand?BenTheMan said:Structureless particle? Maybe it has not internal quantum numbers? I.e. no spin.