Pion Electroproduction Coincidence Measurements Near the First Pion-Nucleon Resonance PDF Download
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Author: Charles Anthony Mistretta
Publisher:
ISBN:
Category : Pion production
Languages : en
Pages : 0
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Author: Charles Anthony Mistretta
Publisher:
ISBN:
Category : Pion production
Languages : en
Pages : 0
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Author: William Wesley Ash
Publisher:
ISBN:
Category : Mesons
Languages : en
Pages : 308
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Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 1288
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Author: R. Siddle
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Robert J. Cence
Publisher: Princeton University Press
ISBN: 1400874882
Category : Science
Languages : en
Pages : 149
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One of the most fundamental problems in elementary particle physics is the study of the interaction of the pion meson with nucleons. It is believed that the pion meson plays a fundamental role in the description of nuclear forces and it is important, therefore, to understand the interaction of these particles. The primary method of gaining information on this interaction is through scattering experiments, and this book is concerned primarily with studies of pion-nucleon scattering at high energies. Originally published in 1969. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Author: Edward T. Dressler
Publisher:
ISBN:
Category : Coupling constants
Languages : en
Pages : 44
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Author: Richard S. Lawson
Publisher:
ISBN:
Category :
Languages : en
Pages : 145
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![Coincidence Measurements of the ([positive Pion, Neutral Pion, Proton]) Reaction in the [delta]-resonance Region PDF](https://books.google.com/books/content/images/frontcover/4iLhHAAACAAJ?fife=w80-h100)
Author: Steinar Høibråten
Publisher:
ISBN:
Category : Coincidence circuits
Languages : en
Pages : 306
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![Quasielastic Pion Scattering Near the (3,3) Resonance. [255 MeV, Differential Cross Section Ratio]. PDF](https://books.google.com/books/content/images/frontcover/cGaSAQAACAAJ?fife=w80-h100)
Author:
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ISBN:
Category :
Languages : en
Pages :
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The quasielastic pion scattering process (.pi., .pi.p), in which an energetic pion scatters off a target nucleus, knocking-out a bound proton, was studied to determine the role of recoil nucleon charge exchange in the mechanism of the process near the (3,3) free particle pion-nucleon resonance. Calculations, which incorporate the hypothesis of final state charge exchange of the outgoing nucleon, were performed to predict expectations for observing the process. Experimental measurements were made on 27Al and 2°8Pb, using 255-MeV .pi. and .pi.− beams. The outgoing protons were observed in a counter telescope in singles and coincidence modes. Singles spectra were measured at proton angles theta/sub rho/ = 45, 55, 64, and 90° and cross sections were calculated as a function of the energy of the detected proton, for each of the targets. Values of the ratio of .pi. to .pi.− cross sections were calculated for each of the angles of observation. The results obtained indicate that the singles spectra contain events from processes other than quasielastic scattering and that the quasielastic events cannot be easily disentangled from the large background due to such events. The study has thus established the inadequacy of observing quasielastic pion scattering in a single arm measurement. Coincidence measurements were made by observing the recoil protons in coincidence with the scattered pions, which were detected in a scintillator counter telescope. The ratio of .pi.+ to .pi.− cross sections were obtained for each target for the angular settings (theta/sub rho/, theta/sub .pi./) = (55, 50°) and (64, 37.5°). The measured values of 7.0 +- 0.7 for 27Al and 4.5 +- 0.5 for 2°8Pb are substantially below the impulse approximation no-charge-exchange limit of 9. The observed A dependence of this cross section ratio is in agreement with the predictions of the semiclassical charge exchange model, showing the influence of charge exchange. 66 references.
Author: Francis A. Cucinotta
Publisher:
ISBN:
Category : Extraterrestrial radiation
Languages : en
Pages : 30
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