[PDF] Pion Nucleus Scattering In The Isobar Formalism Isobar Hole Model eBook

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Page : pages
File Size : 13,25 MB
Release : 1978
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Lectures on the isobar-hole model for pion reactions include the isobar as an explicit degree of freedom and the connection with a purely pion and nucleon system, the formalism and its relation to the pion optical potential, the extended schematic model for pion scattering, a simple spinless s-wave model, application to pion-oxygen 16 scattering and comparison with elastic scattering data. In this way the extent is shown to which microscopic treatment of the many-body dynamics explains the data and the extent to which additional physical input is required. Another test is the various inelastic processes. Inclusive reactions are briefly discussed. 37 references (JFP).

Author : K. W. McVoy
Publisher : Springer Science & Business Media
Page : 756 pages
File Size : 24,12 MB
Release : 2013-11-11
Category : Science
ISBN : 1461328772

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A NATO Advanced Studies Institute was held June 12-23, 1978, at the University of Wisconsin in Madison, Wisconsin. It was a topical Institute in theoretical nuclear physics and had the some what novel feature of focussing not on a single topic but on two closely allied ones: pion-nucleus and heavy-ion physics. These two fields. both dedicated to the investigation of short-wave length properties of nuclei, have many techniques and concepts in cornmon, and essentially become one in the topic of relativistic heavy-ion physics. The purpose of including both in a single Institute was to encourage the practitioners in each of these fields to learn from those in the other; to judge from the liveli ness of the questioning which ensued, the purpose was well-served indeed. Because the Institute was viewed as one which served both educational and research ends, the lecturers took particular pains to develop their subjects in a careful, coherent sequence. The result is a compendium of advanced techniques and current results in these two rapidly-expanding fields of nuclear theory which should serve interested physicists as an ideal introduction to the fields. In addition to the support provided by the Scientific Affairs Division of NATO, substantial financial assistance was provided by the U. S. National Science Foundation and the Graduate School of the University of Wisconsin.

Author : Anton Nagl
Publisher : Springer
Page : 182 pages
File Size : 47,67 MB
Release : 2006-04-11
Category : Science
ISBN : 3540460667

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Photoproduction of pions from complex nuclei has become an investigative tool for (1) the detailed form of the elementary photopion amplitude, (2) the pion-nucleus optical potential, (3) nuclear structure, and (4) off-shell and medium effects on the elementary amplitude in nuclear processes. In this book, all these aspects are considered in detail. With improved experimental accuracy and beam tech- nology the study of nuclear pion photoproduction will break new ground and become an even more powerful investigative tool. This monograph is intended as an introductory guide as well as a reference manual for grad- uate students and researchers working in this important area of physics.

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Page : pages
File Size : 28,96 MB
Release : 1980
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The requirement of using self-consistent amplitudes to evaluate microscopically the scattering of strongly interacting particles from nuclei is developed. Application of the idea to a simple model of pion-nucleus scattering is made. Numerical results indicate that the expansion of the optical potential converges when evaluated in terms of fully self-consistent quantities. A comparison of the results to a recent determination of the spreading interaction in the phenomenological isobar-hole model shows that the theory accounts for the sign and magnitude of the real and imaginary part of the spreading interaction with no adjusted parameters. The self-consistnt theory has a strong density dependence, and the consequences of this for pion-nucleus scattering are discussed. 18 figures, 1 table.

Author : P. Catillon
Publisher : Elsevier
Page : 714 pages
File Size : 44,73 MB
Release : 2013-09-03
Category : Science
ISBN : 1483265293

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High Energy Physics and Nuclear Structure covers the proceedings of the Ninth International Conference on High Energy Physics and Nuclear Structure, held in Versailles on July 6-10, 1981. The book focuses on the processes, reactions, and methodologies involved in high energy physics and nuclear structure. The selection first offers information on experiments on antinucleon-nucleon, baryonium, nucleon-nucleon, and dibaryons and the quark model pion and the goldstone pion. Discussions focus on antinucleon-nucleon and baryonium, nucleon-nucleon and dibaryon, and spontaneous breaking of chiral symmetry. The text also ponders on quarks and nuclei, multiquark resonant states, and electron scattering from complex nuclei. The publication elaborates on electromagnetic interactions on light nuclei, electromagnetic interactions with nuclei at high momentum transfer, and inelastic electron scattering at low energy. The book also touches on the dynamics of hadron nucleus interactions, hypernuclei and interactions of kaons with nuclei, and pion-nucleus scattering theory. The selection is a dependable reference for readers interested in high energy structure and nuclear physics.

Author : P. Stoler
Publisher : Springer Science & Business Media
Page : 421 pages
File Size : 12,54 MB
Release : 2012-12-06
Category : Science
ISBN : 1468434713

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This volume consists of twelve review articles and a variety of short contributions which are based on lectures presented at the International Symposium on Photopion Nuclear Physics. The review articles were submitted after the sym posium, and there was considerable editing and cross referen cing with the aim of achieving a greater overall unity than ordinarily found in conference proceedings. Photopion Nuclear Physics, as the name suggests, combines two of the most active areas of current intermediate energy nuclear physics research - electromagnetic phenomena as studied by means of electron scattering and photonuclear pro cesses, and mesonic effects in nuclei. The potential value of photopion studies as a complement to electron scattering for the study of spin-isospin aspects of nuclear transitions has been widely recognized for about a decade, thanks to the the oretical work at such institutions as Stanford and Catholic Universities. In fact, some of this theoretical work was done in anticipation of the advent of the new high duty cycle and good energy resolution electron linacs. The potential for using this reaction to study mesonic effects was not as broad ly addressed at that time. However, as seen in the following pages of these proceedings, that situation has dramatically changed.