Strange particle production in pi-p and pi+n interactions at 2.5 GeV/c
Hanft, Raymond William
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https://hdl.handle.net/2142/25699
Description
Title
Strange particle production in pi-p and pi+n interactions at 2.5 GeV/c
Author(s)
Hanft, Raymond William
Issue Date
1967
Doctoral Committee Chair(s)
Sard, R.D.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
strange particle production
bubble chamber experiment
Language
en
Abstract
A bubble chamber experiment based upon 2.71 x 10^5 m pi- track
length in hydrogen and 6.88 x 105 m~+ track length in deuterium has
been performed to study strange particle production.
Cross sections for pi-p reactions exhibit no marked departure
from trends established by other experiments at nearby energies.
In extracting information about pi+n interactions from the pi+D
exposure it was found that 15 to 30% of events, depending on the
final state particles, had protons with momentum greater than
250 MeV/c. These protons were not isotropic in the laboratory and
therefore not spectators in the sense of the impulse approximation.
Protons whose momentum lay in the interval 0 to 250 MeV/c were
generally isotropic, and their momentum distribution agreed
moderately well with a Hulthen distribution normalized over this
interval. With the inclusion of the high proton momentum events
the cross sections for processes apparently arising from pi+n
interactions were found to be in satisfactory agreement with
cross sections for the charge symmetric pi-p reactions.
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