Worksheet: Charm

In this worksheet, we will practice determining the charm of composite particles and sets of particles and whether given interactions conserve charm.

Q1:

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

Q2:

A Λc is a baryon with the composition udc. What is the charm of the Λc?

  • A+2
  • B+1
  • C 1
  • D 2
  • E0

Q3:

What is the charm of a charm antiquark?

Q4:

What is the charm of a charm quark?

  • A 1
  • B 1 3
  • C0
  • D + 1
  • E + 2 3

Q5:

What is the charm of a muon?

Q6:

What is the charm of a top quark?

Q7:

A type of omega baryon has the composition ccc.

What is the charm of this omega baryon?

What is the relative electric charge of this omega baryon?

Q8:

The following equation shows a D meson decaying into a kaon and two pions, D(cu)(us)+(ud)+(uu)0̄Κ̄𝜋̄𝜋̄.

What is the total charm before this interaction takes place?

What is the total charm after this interaction takes place?

Q9:

A D is a meson with the composition cū. What is the charm of the D?

Q10:

The following equation shows a charmed lambda baryon decaying into a proton, a kaon, and a pion. ΛΚ𝜋+c+(udc)p(uud)+(us)+(ud)

What is the total charm before this interaction takes place?

What is the total charm after this interaction takes place?

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