- #1
KaneOris
- 113
- 0
Does anyone know how many there are, also how many are just thoeretical. We know of the proton, neutron, and election, but do we know that Tau and Muons exist? Also does anyone think we'll keep finding more
In summary, the conversation discusses the number and existence of elementary particles, specifically the proton, neutron, electron, tau, and muon. It is mentioned that all particles in the Standard Model have been confirmed experimentally except for the Higgs and sparticles, which are still theoretical. The conversation also mentions a website that provides information about these particles. Overall, the conversation revolves around the history and discovery of elementary particles and the search for a unifying theory to explain them.
- #2
misogynisticfeminist
- 370
- 0
all particles in the standard model have been confirmed experimentally. Muons, taus etc. The only thing is the higgs and sparticles which are entirely theoretical.
- #3
marlon
- 3,792
- 11
Kane,
Check out this very nice site on the different elementary particles in the Standard Model described by Quantum Field Theory...
http://pdg.web.cern.ch/pdg/particleadventure/frameless/startstandard.html
regards
marlon
Check out this very nice site on the different elementary particles in the Standard Model described by Quantum Field Theory...
http://pdg.web.cern.ch/pdg/particleadventure/frameless/startstandard.html
regards
marlon
Last edited by a moderator:
- #4
mathman
Science Advisor
- 8,140
- 572
Most of these elementary particles were discovered before the quark model was created. I remember seeing a discusssion on PBS with Oppenheimer about all the various mesons and speculating about the existence of some underlying theory to explain what was then considered a mess.
- #5
Mk
- 2,043
- 4
Yes, the muon and tau were both discovered before any quark theories
1. What are mesons, baryons, and leptons?
Mesons, baryons, and leptons are all subatomic particles that make up the building blocks of matter. They are classified based on their mass, charge, and other properties.
2. What is the difference between mesons, baryons, and leptons?
Mesons are particles made up of a quark and an antiquark, while baryons are made up of three quarks. Leptons, on the other hand, are fundamental particles that do not participate in the strong nuclear force and are not made up of quarks.
3. How are mesons, baryons, and leptons discovered?
Mesons, baryons, and leptons are discovered through experiments using particle accelerators. By colliding particles at high speeds, scientists can observe the particles produced and identify new particles.
4. What role do mesons, baryons, and leptons play in the Standard Model of particle physics?
Mesons, baryons, and leptons are all included in the Standard Model, which is a theory that describes the fundamental particles and forces in the universe. They are essential in understanding the structure and behavior of matter.
5. Can mesons, baryons, and leptons be created or destroyed?
Mesons, baryons, and leptons can be created and destroyed through high-energy collisions. However, the total number of these particles in a closed system remains constant, as stated by the law of conservation of mass and energy.
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