Two body rapidity correlations in pi-p interactions at 147 GeV/c
Tortora, John Oliver
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https://hdl.handle.net/2142/25655
Description
Title
Two body rapidity correlations in pi-p interactions at 147 GeV/c
Author(s)
Tortora, John Oliver
Issue Date
1976
Doctoral Committee Chair(s)
Sard, R.D.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
two body rapidity correlations
Bose-Einstein effect
pion emission
Language
en
Abstract
"Results are presented for inclusive and semi-inclusive two body rapidity correlations for 11 p interactions at 147 GeV/c. Strong short range correlations are seen for particles of opposite sign, while a ""Bose-Einstein"" effect is seen for
like sign particles. It is found that the opposite sign correlations are consistent with a cluster model in which 2/3 of the events are generated by a model of
independent w-like emission (w -> pi+pi-pi°) with an w-mass of 1.0 GeV, while the
remainder of the events are generated according to a model of independent pion emission. It is also found that the data cannot be fit by a model of independent p-like production ( p -> 2pi) regardless of what p-mass is assumed.
The real pO cross section determined from this experiment and the real U) cross section determined from information presented elsewhere are sufficient to account for only a small fraction of the observed ( + -) correlations. Conversely, the correlations do not admit large p and U) inclusive cross sections.
The like sign correlations contain a broad positive peak at large azimuthal
separation. This effect is enhanced at large transverse momentum. Such results
may be taken as evidence of fairly massive charged bodies decaying into three
charged pions, or doubly charged clusters decaying into two charged pions."
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