A search for heavy leptons using a differential Cherenkov counter
Beier, Eugene William
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https://hdl.handle.net/2142/23987
Description
Title
A search for heavy leptons using a differential Cherenkov counter
Author(s)
Beier, Eugene William
Issue Date
1966
Doctoral Committee Chair(s)
Koester, L.J.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
heavy leptons
differential cherenkov counter
Brookhaven national laboratory alternating gradient synchrotron
beam particles
Language
en
Abstract
A search for heavy leptons has been performed at the
Brookhaven National Laboratory Alternating Gradient Synchrotron.
Particular emphasis has been placed on the possible existence
of leptons with mass slightly less than the K meson mass.
The experiment used a high resolution differential
Cherenkov counter to identify known beam particles and place
upper limits on the abundance of other particles in the beam.
The details of the design and performance of this Cherenkov
counter are given.
Heavy leptons of mass near the K meson mass were sought
by looking for anomalous penetration of lead by particles
identified as K mesons in the differential Cherenkov counter.
The result is presented as the 95% confidence limit that
there is no anomalous penetration of lead by K mesons. This
limit is compared with an estimate of the number of. heavy
leptons expected as a function of their mass and lifetime
and under reasonable assumptions about their production.
Total cross sections for 3.05 BeV/c rr- and K- and
4.60 BeV/c p interacting with lead are given. A summary
of present limits on the existence of heavy leptons is
presented.
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