Question

c) Identify whether the following particles are leptons, baryons or mesons: µ, Λ, η°, π°, p, π+, νe, τ, Σ+, n (

Answer 1

Answer on Question #66491 – Physics – Molecular Physics – Thermodynamics

Identify whether the following particles are leptons, baryons or mesons: $\mu, \Lambda, \eta^*, \pi^*, p, \pi^+, \nu_e, \tau, \Sigma^+, n$.

Solution

Baryons are composite particles made of three quarks, as opposed to mesons, which are composite particles made of one quark and one antiquark

(https://en.wikipedia.org/wiki/List_of_baryons):

$$\Lambda, p, \Sigma^+, n.$$

Mesons are unstable subatomic particles composed of one quark and one antiquark

https://en.wikipedia.org/wiki/List_of_mesons

$$\eta^0, \pi^0, \pi^+.$$

A lepton is an elementary, half-integer spin (spin 1/2) particle that does not undergo strong interactions (https://en.wikipedia.org/wiki/Lepton)

$$\mu, \nu_e, \tau.$$

Answers: Baryons: $\Lambda, p, \Sigma^+, n$.

Mesons: $\eta^0, \pi^0, \pi^+$.

Leptons $\mu, \nu_e, \tau$.

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