P.3.2.1.5 Classification of particles

The ∑⁰ baryon, composed of the quark combination uds, is produced through the strong interaction between a π⁺ meson and a neutron.

π⁺ + n → ∑⁰ + X

What is the quark composition of X?

• us̅

• ud

• ud̅

• uds̅

An iodine nucleus decays into a nucleus of Xe−131, a beta-minus particle and particle Y.

Which is a property of particle Y?

• It has a lepton number of +1

• It is an antiparticle

• It is negatively charged

• It experiences the strong interaction

Tags

NGSS.HS-PS1-8

Which line correctly classifies the particle shown?

• A

• B

• C

• D

What of the following is a hadron of zero charge?

• neutrino

• photon

• proton

• neutron

What are the numbers of hadrons, baryons and mesons in an atom of ⁷₃Li?

• hadrons: 7

  baryons: 3

  mesons: 3

• hadrons: 7

  baryons: 4

  mesons: 4

• hadrons: 7

  baryons: 7

  mesons: 0

• hadrons: 10

  baryons: 7

  mesons: 0

Which of the following is not true?

• Each meson consists of a single quark and a single antiquark.

• Each baryon consists of three quarks

• The magnitude of the charge on every quark is ⅓

• A particle consisting of a single quark has not been observed.