Backward Production In. Pi. Minus Plus Proton Goes to Neutron. Pi. Plus PI Minus at 8 GeV/c. [Differential Cross Sections]. PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Events of the form .pi./sup -/p .-->. n.pi./sup +/.pi./sup -/ where the neutron is produced fast and forward in the laboratory are reported. The data were obtained in an initial exposure of 160,000 pictures in the University of Illinois--Argonne National Laboratory streamer chamber using an 8 GeV/c pion beam. The chamber was triggered by the detection of a fast forward neutral hadron interacting in an array of thick plate optical spark chambers. The dominant feature of the data is quasi-two body-production of nrho/sup 0/ and nf/sup 0/ intermediate states. The differential cross section for rho/sup 0/ production shows evidence for backward peaking near u' = 0. The f/sup 0/ decay angular distributions appear to be consistent with the hypothesis of u channel proton exchange as the dominant production mechanism. For both nrho/sup 0/ and nf/sup 0/ production the observed cross sections are on the order of one microbarn. (auth).
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Events of the form .pi./sup -/p .-->. n.pi./sup +/.pi./sup -/ where the neutron is produced fast and forward in the laboratory are reported. The data were obtained in an initial exposure of 160,000 pictures in the University of Illinois--Argonne National Laboratory streamer chamber using an 8 GeV/c pion beam. The chamber was triggered by the detection of a fast forward neutral hadron interacting in an array of thick plate optical spark chambers. The dominant feature of the data is quasi-two body-production of nrho/sup 0/ and nf/sup 0/ intermediate states. The differential cross section for rho/sup 0/ production shows evidence for backward peaking near u' = 0. The f/sup 0/ decay angular distributions appear to be consistent with the hypothesis of u channel proton exchange as the dominant production mechanism. For both nrho/sup 0/ and nf/sup 0/ production the observed cross sections are on the order of one microbarn. (auth).
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
A study of the interaction .pi./sup -/p .-->. n.pi./sup +/.pi./sup -/ is reported where the neutron was produced fast and forward in the laboratory. The data were obtained using an 8 GeV/c .pi./sup -/ beam that was focused on a liquid hydrogen target located inside the University of Illinois--Argonne National laboratory streamer chamber. The chamber was triggered on the interaction of a fast, forward neutral hadron in thick plate optical spark chambers. A total of 866 events had an acceptable 3-constraint fit to .pi./sup -/p .-->. n.pi./sup +/.pi./sup -/ and satisfied other selection criteria. The data were characterized by backward production of the final states n rho/sup 0/, nf/sup 0/, and .delta./sup -/(1232).pi./sup +/. Differential cross sections and decay angular distributions for these resonant states are presented and the implications for the production mechanisms discussed. 20 references.
Author: United States. Energy Research and Development Administration. Technical Information Center Publisher: ISBN: Category : Force and energy Languages : en Pages : 588
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Author: William Lee Mollet
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Author: United States. Energy Research and Development Administration
Author: United States. Energy Research and Development Administration. Technical Information Center
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Author: United States. Energy Research and Development Administration
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Author: