Standard Model Review 2019.

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Presentation transcript:

Standard Model Review 2019

State the definition of a HADRON

State the definition of a MESON

State the Definition of a BARYON

State the definition of a LEPTON

Can a particle be A HADRON and a LEPTON?

Define a FERMION

Mix and Match Gluon, Graviton* Photon W and Z bosons Force Exchange particle Strong nuclear Weak nuclear Electromagnetic Gravitational

Mix and Match Beta decay; decay of unstable hadrons Holding electrons in atoms Holding nucleons in the nucleus Holding matter in planets, stars and galaxies Force Responsible for…. Strong nuclear Weak nuclear Electromagnetic Gravitational

State the meaning of the PHOTOELECTRIC EFFECT

State the conditions for…. PHOTOEMISSION – i.e. the emission of electrons …..to occur

Answers 2. hadrons are composite particles made of quarks. 3. Mesons are hadrons composed of a quark and antiquark 4. Baryon are hadrons made of 3 quarks 5. Leptons are fundamental particles that are solitary 6. No 7. A fermion is a particles that makes matter. Quarks and leptons, as well as most composite particles, like protons and neutrons, are fermions.

Answers 2 Force Range (m) Relative strength Exchange particle Example effects Strong nuclear 10–15 1038 Gluon 3.Holding nucleons in the nucleus Weak nuclear 10–18 1025 W and Z bosons 1. Beta decay; decay of unstable hadrons Electro- magnetic  1036 Photon 2. Holding electrons in atoms Gravitational  1 Graviton* 4. Holding matter in planets, stars and galaxies

Answers 3 The production of a free electron from the surface of a metal when e-m radiation of sufficiently high frequency is incident on it!

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