Essay On Force-Carrier Particles

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Introduction

In Ancient Greece, many believed that everything was made up of simple particles called Atoms. They called them Atoms because they believed that they had no parts and could not be broken. This had been believed for many centuries until evidence that something smaller actually existed (the electron). Once scientists found the electron, they were not satified. Scientists kept creating new theories and testing new hypothesis' attempting to find what makes the world tick. Now, the universe's fundimental particles have seemingly been found, but scientists are still searching for a more complete answer.

The sub-atomic particles that are known to exist now are a strange and vast new addition to the seemingly grand scale that …show more content…

Each has a specific mass, a specific electromagnetic charge and a spin of 1, but no color charge (so they do not participate in the strong force). Weak interactions are the flavor changes between particles (flavor being the specific type of particle).

The final boson is the graviton. It has theoretically not been observed due to the relative lack of energy that gravity has compared to the other forces. But it is theorized to be the force-carrier wave for gravity, and the interactions it deals with is mass and energy.

Fermions are the fundamental particles for everything in the universe. How they are described is: Fermions are particles with a spin of an odd multiple of 1/2 (1/2, 3/2, 5/2).

Two types of basic fermion exist, the quark and the lepton. These fermions are subject to Pauli Exclusion Principle which states that no particle can exist in the same state in the same place at the same time. Quarks and Leptons have something known as "flavor". Flavor is just a name for the type particle of a class. Since all fermions have flavor, they are all subject to interactions with W-, W+, and Z bosons which are the force carriers for the weak …show more content…

This means that gluons will react with quarks but not with leptons.

Leptons consist of three flavors of charged particle and a neutral "neutrino" for each flavor of charged particle. Of these 6 lepton particles, only 4 are stable in the universe: electrons, electron neutrinos, muon neutrinos, and tau neutrinos. The other leptons, muons and taus, are more massive than their first generation cousin, the electons, and therefore will decay into a more stable state via the weak force.

Quarks have two different types and three flavors of each type also. There are the quarks with a charge of -1/3 and quarks with the charge 2/3. Of these, the only quarks noted in somewhat stable particles are the up, down, and strange quark. The other quarks (charm, bottom, top) are very unstable and decay very quickly after being created. Quarks are always accompanied by gluons, and are always in sets where their total color charge equals zero. Quarks are what make up hadrons and mesons.

Hadrons are particles that are comprised of quarks and gluons. Baryons and mesons are different types of

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