Last Updated：2025/12/30
Sentence
When
a
W⁺
boson
decays
into
a
positron
and
a
neutrino,
lepton
number
is
conserved
because
the
W⁺
boson
is
a
non-lepton,
the
neutrino
is
a
lepton,
and
the
positron
is
an
antilepton.
Likewise,
when
a
W⁻
boson
decays
into
an
electron
and
an
antineutrino,
lepton
number
is
conserved
because
the
W⁻
boson
is
a
non-lepton,
the
electron
is
a
lepton,
and
the
antineutrino
is
an
antilepton.
Quizzes for review
When a W⁺ boson decays into a positron and a neutrino, lepton number is conserved because the W⁺ boson is a non-lepton, the neutrino is a lepton, and the positron is an antilepton. Likewise, when a W⁻ boson decays into an electron and an antineutrino, lepton number is conserved because the W⁻ boson is a non-lepton, the electron is a lepton, and the antineutrino is an antilepton.
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