Download or read book Positive pion Photoproduction at 180 Degrees Near the Second Nucleon pion Resonance written by C. Schaerf and published by . This book was released on 1966 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1971 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoproduction of Pi O from Hydrogen Near the Second Pion Nucleon Resonance written by H De Staebler (Jr) and published by . This book was released on 1965 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoproduction of Charged Pion Pairs and Doubly Positive Nucleon Resonance 1238 in Hydrogen from 0 9 to 1 3 GeV written by Michael George Hauser and published by . This book was released on 1967 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Collection of Pion Photoproduction Data written by P. Spillantini and published by . This book was released on 1970 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1966-05 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoproduction of pi 0 from Hydrogen Near the Second and Third Pion nucleon Resonances written by Calvin Bruce Ward and published by . This book was released on 1966 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoproduction of Pions on Nucleons and Nuclei written by A. A. Komar and published by Nova Publishers. This book was released on 1989 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Pion Photoproduction on Nucleons in the First Resonance Region experimental Situation written by G. von Holtey and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Pion Photoproduction in the Second Resonance Region written by Y. C. Chau and published by . This book was released on 1967 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Neutral Pion Photoproduction in the Backward Direction written by John Penn Rutherfoord and published by . This book was released on 1968 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Pion Photoproduction written by Anton Nagl and published by Springer. This book was released on 2006-04-11 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Analyses of Pion Photoproduction in the Second and Third Resonance Regions written by William Arnott Rankin and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pion Photoproduction on Nucleons in a Covariant Hadron exchange Model written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a relativistic dynamical model of pion photoproduction on the nucleon in the resonance region. It offers several advances over the existing approaches. The model is obtained by extending our [pi] N-scattering description to the electromagnetic channels. The resulting photopion amplitude is thus unitary in the [pi]N, [gamma]N channel space, Watson's theorem is exactly satisfied. At this stage we have included the pion, nucleon, [Delta](1232)-resonance degrees of freedom. The [rho] and [omega] meson exchanges are also included, but play a minor role in the considered energy domain (up to √s = 1.5 GeV). In this energy range the model provides a good description of all the important multipoles. We have allowed for only two free parameters--the photocouplings of the [Delta]-resonance. These couplings are adjusted to reproduce the strength of corresponding resonant-multipoles M{sub 1+} and E{sub 1+} at the resonance position. We then obtain R{sub EM} = 3.8 ± 1.6% for the E2/M1 ratio, in a qualitative agreement with other dynamical models.

Download or read book An Analysis of Single Pion Photoproduction in the Second Resonance Region written by Robert G. Moorhouse and published by . This book was released on 1970 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Neutral Pion Photoproduction on the Nucleon Near Threshold written by B. Blankleider and published by . This book was released on 1989 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: