Worksheet: Gluons

In this worksheet, we will practice recalling the basic properties of gluons and how they interact with quarks.

Q1:

What is the theoretical mass of the gluon?

  • A0.12 eV/𝑐
  • B1.3 meV/𝑐
  • C1.3 keV/𝑐
  • D5.4 meV/𝑐
  • E0 eV/𝑐

Q2:

How many gluon color types are there?

Q3:

Which of the following lines is used in Feynman diagrams to represent a gluon?

  • A
  • B
  • C
  • D

Q4:

The Feynman diagram shows the decay of a delta baryon (udd) to a proton (uud) and a pion (ud). What does particle X represent in the diagram?

  • AA 𝑊 boson
  • BA 𝑊 boson
  • CA gluon
  • DA 𝑍 boson
  • EA photon

Q5:

The Feynman diagram shows a delta baryon (ddd) decaying to a neutron (udd) and a meson. What is the particle X?

  • AA down antiquark
  • BAn up antiquark
  • CAn up quark
  • DA down quark
  • EA gluon

Q6:

The Feynman diagram shows two up quarks exchanging a gluon. What is the color charge of the gluon?

  • ARed–antired
  • BBlue–green
  • CGreen–blue
  • DBlue–antigreen
  • EGreen–antiblue

Q7:

The Feynman diagram shows a delta baryon (udd) decaying to a proton (uud) and a meson. What is the particle X?

  • AAn up antiquark
  • BA gluon
  • CA down quark
  • DA down antiquark
  • EAn up quark

Q8:

The Feynman diagram shows an up quark and a down quark exchanging a gluon. What is the color charge of the gluon?

  • ARed–antiblue
  • BRed–blue
  • CBlue–antired
  • DGreen–antigreen
  • EBlue–red

Q9:

What is the relative electric charge of a gluon?

  • A23e
  • B13e
  • C0e
  • D13e

Q10:

Are gluons a type of boson or a type of fermion?

  • AFermion
  • BBoson

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