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Title:Production of charmonium states in 225 GeV/c pi-minus beryllium interactions
Author(s):Hahn, Stephen Robert
Doctoral Committee Chair(s):Sard, R.D.
Department / Program:Physics
Subject(s):charmonium states
pi-minus beryllium interactions
FNAL experiment
Abstract:This thesis reports on the analysis of data obtained during FNAL experiment EG10. The Chicago cyclotron Magnet Spectrometer was used to perform a study of the hadronic production of charmonium. A 225 GeV/c negative pion beam was incident on a beryllium target. The trigger required a dimuon signature which favored opposite sign muon pairs with a large combined PT. A search was then made for psi mesons of the charmonium spectrum by combining J,Af mesons found in the dimuon spectrum with photons detected in a large lead glass shower detector. These events were used to determine the fraction of Jl1Ys produced fran 'Xs. A i(3685) signal seen in the dimuon spectrum was used to determine the fraction of J/psi s resulting from i(3685). Assuming that these are the only particles decaying to J/psi, we obtain the fraction of J/psi produced directly in hadronic collisions-0.58±O.09 -which is relevant to the production mechanism for charmonium in strong interactions.
Issue Date:1983
Genre:Dissertation / Thesis
Rights Information:1983 Stephen Robert Hahn
Date Available in IDEALS:2011-06-07
Identifier in Online Catalog:744971

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