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Lesson: The Conservation of Baryon Number

Worksheet • 14 Questions

Q1:

What is the baryon number of a charm antiquark?

  • A βˆ’ 1 3
  • B0
  • C+1
  • D βˆ’ 1
  • E + 1 3

Q2:

What is the baryon number of a proton?

Q3:

A tetraquark is a hypothetical particle that is made up of four quarks. If a tetraquark had the composition 𝑐 Μ„ 𝑐 𝑑 Μ„ 𝑒 , what would its baryon number be?

Q4:

Which of the following particles have a baryon number of βˆ’ 1 ?

  • down quark
  • down antiquark
  • antielectron
  • tauon
  • tau neutrino
  • tau antineutrino
  • antiproton
  • neutron
  • photon
  • AAntiproton
  • BAntielectron and neutron
  • CPhoton, neutron, and tau antineutrino
  • DTau neutrino and down quark
  • ETauon and down antiquark

Q5:

Which of the following particles have a baryon number of 1?

  • electron
  • neutron
  • top quark
  • D meson
  • delta baryon
  • electron neutrino
  • proton
  • B meson
  • charm quark
  • AProton, neutron, and delta baryon
  • BTop quark, B meson and D meson
  • CNeutron, top quark, and D meson
  • DProton, B meson, and charm quark
  • EElectron neutrino and charm quark

Q6:

What is the baryon number of an electron neutrino?

Q7:

What is the baryon number of a top quark?

  • A + 1 3
  • B0
  • C βˆ’ 1 3
  • D βˆ’ 2 3
  • E + 2 3

Q8:

Which of the following particle interactions does not conserve baryon number?

  1. Ξ£ πœ‹ + + 0 p +
  2. Ξ£ πœ† 𝛾 0 0 +
  3. p + p + + + – + – 0 πœ‹ πœ‹ πœ‹
  4. p + + + – 0 0 πœ‹ Κ πœ†
  5. πœ‹ πœ‡ 𝜈 – – + οŽ€
  6. Ξ” πœ‹ 0 0 n +
  • Av
  • Bi
  • Cii and iv
  • Dvi
  • Eiii and v

Q9:

A πœ‹  is a meson that is made up of an up quark and a down antiquark. What is the baryon number of a πœ‹  ?

Q10:

Which of the following particles have a baryon number of + 1 3 ?

  • pion
  • down quark
  • photon
  • up antiquark
  • proton
  • neutron
  • strange antiquark
  • bottom quark
  • electron
  • ADown quark and bottom quark
  • BUp antiquark and proton
  • CElectron and neutron
  • DStrange antiquark and electron
  • EPion and photon

Q11:

Which of the following particles have a baryon number of 0?

  • proton
  • top quark
  • electron
  • B meson
  • down antiquark
  • tauon
  • mu neutrino
  • delta baryon
  • up quark
  • AB meson, electron, mu neutrino, and tauon
  • BTop quark, electron, mu neutrino, and tauon
  • CDown antiquark, delta baryon, and up quark
  • DUp quark, delta baryon, and B meson
  • ETauon, mu neutrino, and top quark

Q12:

What is the baryon number of a muon?

Q13:

Which of the following particles have a baryon number of βˆ’ 1 3 ?

  • tauon
  • down antiquark
  • kaon
  • strange quark
  • up antiquark
  • muon
  • photon
  • tau neutrino
  • top antiquark
  • ADown antiquark, up antiquark, and top antiquark
  • BStrange quark and top antiquark
  • CTau neutrino, photon, and kaon
  • DKaon, photon, and up antiquark
  • EMuon, tauon, and strange quark

Q14:

A Xi baryon is a particle that is made up of one up quark and two strange quarks. What is the baryon number of a Xi baryon?

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