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Sard, R.D. Hahn, Stephen Robert 2011-06-07T18:34:27Z 2011-06-07T18:34:27Z 10000-01-01 1983 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. Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-07T18:34:27Z No. of bitstreams: 1 1983_hahn.pdf: 6475157 bytes, checksum: f6a23a4015fbb71e0c951d7cd0230599 (MD5) Made available in DSpace on 2011-06-07T18:34:27Z (GMT). No. of bitstreams: 1 1983_hahn.pdf: 6475157 bytes, checksum: f6a23a4015fbb71e0c951d7cd0230599 (MD5) Previous issue date: 1983 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-06-07T18:34:27Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:14:07-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis Thesis U of I Only 744971 http://hdl.handle.net/2142/25347 en 1983 Stephen Robert Hahn charmonium states pi-minus beryllium interactions FNAL experiment dimuon Production of charmonium states in 225 GeV/c pi-minus beryllium interactions Dissertation / Thesis text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.