The first highlighted
track shows the trajectory of the from
the decay of an omegaminus
.
This then decays into a
and
a
.
The lambda decays to a proton and a
in a characteristic vee; the
decays to two photons
which
(against the odds) both produce
e+e-
pairs in the hydrogen.
Victor Weisskopf, the ex-Director General of CERN, used to joke by showing
a blank sheet of paper and calling it a bubble chamber picture of a decaying
to a
and a
– neutral
particles are not supposed to leave traces in a bubble chamber!
For details of the important picture – the discovery of the omega-
click here.