mathman said:At present the least massive (non-zero mass) known particles are neutrinos.
Your comment is a little puzzling - why would less massive particles be larger?
Constantin said:I thought all elementary particles are point like, and their size is the Plank Length or around there.
Whilst the latter statement may be true, the former isn't. A point is a point. The notion of a "point" in physics is not distinct from topological notion of a point.Constantin said:Because a point in physics is not infinitely small.
Plank length is the shortest measurable length.
Constantin said:Because a point in physics is not infinitely small.
Particles less massive than leptons are subatomic particles that have a smaller mass than leptons, which are one of the fundamental particles that make up matter. These particles include quarks, which make up protons and neutrons, as well as other particles such as neutrinos and bosons.
Particles less massive than leptons are studied using various experiments and techniques, such as particle accelerators and detectors. These experiments help scientists understand the properties and behavior of these particles, which can provide insights into the fundamental interactions and structure of matter.
While particles less massive than leptons may not directly impact our daily lives, they play a crucial role in the functioning of the universe. These particles are responsible for the formation of atoms, which make up all matter, and are involved in various physical processes that shape our world.
Some examples of particles less massive than leptons include up and down quarks, which make up protons and neutrons, electron neutrinos, which are involved in radioactive decay, and W and Z bosons, which are responsible for the weak nuclear force.
Studying particles less massive than leptons is essential for understanding the fundamental properties of matter and the forces that govern the universe. It also has practical applications in fields such as medicine, where particle accelerators are used for cancer treatment, and technology, where particle detectors are used in various imaging and scanning techniques.