Positive-pion Photoproduction at 180 Degrees Near the Second Nucleon-pion Resonance PDF Download
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Author: C. Schaerf
Publisher:
ISBN:
Category :
Languages : en
Pages : 16
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Book Description
In a previous experiment the cross section for the photoproduction of pions in hydrogen near the second pion nucleon resonance was measured at 135 degrees and 180 degrees in the CMS. At 180 degrees the measurements did show a very sharp peak at a gamma ray energy of 700 MeV. The experiment has now been repeated only at 180 degrees, with improved energy resolution. The new results, in agreement with the old ones, show the same sharp energy dependence at about the same value of the primary energy. (Author).
Author: C. Schaerf
Publisher:
ISBN:
Category :
Languages : en
Pages : 16
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Book Description
In a previous experiment the cross section for the photoproduction of pions in hydrogen near the second pion nucleon resonance was measured at 135 degrees and 180 degrees in the CMS. At 180 degrees the measurements did show a very sharp peak at a gamma ray energy of 700 MeV. The experiment has now been repeated only at 180 degrees, with improved energy resolution. The new results, in agreement with the old ones, show the same sharp energy dependence at about the same value of the primary energy. (Author).
Author: H De Staebler (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 51
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Pion photoproduction from nucleons has proved a useful tool in the study of the pion-nucleon interaction because of the dominance of the strong final-state interaction between emitted pion and recoil nucleon. There has remained, however, a noticeable lack of data at high momentum transfer in the region of the second pion-nucleon resonance. In particular, the zero angle measurement provides an important test of the hypothesis that the direct photo-electric term is responsible for the difference in position of this resonance in pi o and pi = photoproduction. The present experiment was designed to study this region using the Stanford Mark III linear accelerator. The results of the experiment establish that the discrepancy in resonance positions is not due to the photo-electric term, and also establish the possibility of a high momentum transfer enhancement of pi o photoproduction caused by crossed nucleon and nucleon isobar exchanges. The paper is divided into into five parts. In Section II, the experimental equipment and techniques are described. Section III contains an account of the data reduction, and the results are then interpreted in Section IV. Finally, in Section V, general conclusions are drawn. (Author).
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Category : Aeronautics
Languages : en
Pages : 282
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Author:
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ISBN:
Category : Science
Languages : en
Pages : 760
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Author: Michael George Hauser
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Category : Electronic dissertations
Languages : en
Pages : 414
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Author: P. Spillantini
Publisher:
ISBN:
Category : Cross sections (Nuclear physics)
Languages : en
Pages : 168
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 778
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![Photoproduction of [pi]0 from Hydrogen Near the Second and Third Pion-nucleon Resonances PDF](https://books.google.com/books/content/images/frontcover/TCtyGwAACAAJ?fife=w80-h100)
Author: Calvin Bruce Ward
Publisher:
ISBN:
Category : Mesons
Languages : en
Pages : 208
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Author: A. A. Komar
Publisher: Nova Publishers
ISBN: 9780941743778
Category : Science
Languages : en
Pages : 372
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Studies the theoretical and experimental aspects of photoproduction of pions on nucleons and nuclei in the range of photon energies up to 1 GeV. Theoretical predictions are presented based on dispersion relationships of multiple pion photoproduction amplitudes. The problem of a complete experiment i
Author: G. von Holtey
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Category :
Languages : en
Pages :
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