Worksheet: Hadrons

In this worksheet, we will practice identifying which classes of hadron a given particle belongs to and what the properties of given hadrons are.

Q1:

The diagram shows a hadron made up of a quark and an antiquark. What is the relative charge of the hadron?

Q2:

Which of the following is the correct definition of a hadron?

  • AA hadron is a composite particle that is made up of exactly 3 quarks.
  • BA hadron is a composite particle that is made up of 3 or more quarks.
  • CA hadron is a composite particle that is made up of 1 quark and 1 antiquark.
  • DA hadron is a composite particle that is made up of 2 or more quarks.
  • EA hadron is any particle that does not interact via the strong nuclear force.

Q3:

The diagram shows a hadron made up of three quarks. What is the relative charge of the hadron?

Q4:

Which of the following is the correct definition of a baryon?

  • AA baryon is a composite particle that is made up of 3 or more quarks.
  • BA baryon is a composite particle that is made up of 2 or more quarks.
  • CA baryon is a composite particle that is made up of 1 quark and 1 antiquark.
  • DA baryon is a composite particle that is made up of exactly 3 quarks.
  • EA baryon is any particle that interacts via the strong nuclear force.

Q5:

Which of the following is the correct definition of a meson?

  • AA meson is a composite particle that is made up of 3 or more quarks.
  • BA meson is a composite particle that is made up of 2 or more quarks.
  • CA meson is a composite particle that is made up of exactly 3 quarks.
  • DA meson is a composite particle that is made up of 1 quark and 1 antiquark.
  • EA meson is any particle that interacts via the strong nuclear force.

Q6:

The diagram shows a hadron made up of three quarks. What is the relative charge of the hadron?

Q7:

Which of the following is the correct definition of a hyperon?

  • AA hyperon is any baryon that contains 1 or more strange or charm quarks, but no bottom or top quarks.
  • BA hyperon is any baryon that contains 2 or more strange quarks, but no charm, bottom, or top quarks.
  • CA hyperon is any baryon that contains 1 or more strange, charm, bottom, or top quarks.
  • DA hyperon is any baryon that contains 1 or more strange quarks, but no charm, bottom, or top quarks.
  • EA hyperon is any hadron that contains 1 or more strange, charm, bottom, or top quarks.

Q8:

A 𝐷 + is a meson with the composition 𝑐 ̄ 𝑑 . What is the relative charge of the 𝐷 + ?

Q9:

Which of the particles shown in the diagram are baryons? The quarks shown in the diagram are colored according to their electric charge.

  • Aa, b, c, and f
  • Ba, b, c, and d
  • Ca, c, e, and f
  • Db, d, e, and f
  • Ea, e, d, and f

Q10:

Which of the following particles are hadrons?

  • 𝜈
  • 𝜆 ( 𝑢 𝑑 𝑠 )
  • 𝑐
  • ̄ 𝑡
  • 𝜋 ( 𝑢 ̄ 𝑑 )
  • 𝑝 ( 𝑢 𝑢 𝑑 )
  • 𝑒
  • A 𝜋 , 𝑐 , and 𝑒
  • B ̄ 𝑡 and 𝑒
  • C 𝜈 , 𝜆 , and 𝑐
  • D 𝜆 , 𝜋 , and 𝑝
  • E 𝜆 , ̄ 𝑡 , and 𝑝

Q11:

A Σ is a baryon with the composition dds. What is the relative charge of the Σ ?

Q12:

A Κ is a particle that is made up of an up antiquark and a strange quark. What is the relative charge of the Κ ?

Q13:

A Λ is a particle that is made up of an up quark, a down quark, and a strange quark. What is the relative charge of the Λ ?

Q14:

Which of the following particles are hyperons?

  • Σ ( d d s )
  • 𝜅 ( ̄ ) u s
  • 𝜆 ( ) u d s
  • 𝜅 ( ̄ ) d s
  • 𝜋 ( ̄ ) u d
  • 𝜇
  • 𝑛 ( u d d )
  • A 𝑛 and 𝜆
  • B 𝜅 and 𝜇
  • C 𝜋 and 𝑛
  • D Σ and 𝜆
  • E 𝜅 and 𝜇

Q15:

Which of the following particles are baryons?

  • Σ ( ) d d s
  • 𝜅 ( ̄ ) u s
  • 𝜆 ( ) u d s
  • 𝜅 ( ̄ ) d s
  • 𝜋 ( ̄ ) u d
  • 𝜇
  • 𝑛 ( ) u d d
  • A 𝜅 , 𝜆 , and 𝜇
  • B 𝜅 , 𝜋 , and 𝜇
  • C Σ , 𝜆 , and 𝜅
  • D Σ , 𝜆 , and 𝑛
  • E 𝑛 , 𝜋 , and 𝜇

Q16:

Which of the particles shown in the diagram are hyperons? The quarks shown in the diagram are colored according to their electric charge.

  • A(e) and (f)
  • B(d) and (c)
  • C(d) and (f)
  • D(e)
  • E(b)

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