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A Study Of Pion Photoproduction On Helium 4 In The Delta Resonance Region Using Polarised And Unpolarised Photons
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Book Synopsis A Study of Pion Photoproduction on Helium-4 in the Delta Resonance Region Using Polarised and Unpolarised Photons by : Jason F. Arneil
Download or read book A Study of Pion Photoproduction on Helium-4 in the Delta Resonance Region Using Polarised and Unpolarised Photons written by Jason F. Arneil and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the reaction on a 4 He target have been carried out using both unpolarised and polarised photons. This work is the latest in a series of experiments conducted by the Edinburgh University Nuclear Physics group in collaboration with the Universities of Glasgow and Tubingen. The experiment was carried out using the 855 MeV MAMIB electron accelerator at the Institut fur Kernphysik, Mainz, between March and August of 1996. The 855 MeV electrons from the accelerator were directed either, on to a 4 micron Nickel foil to produce unpolarised photons or on to a 0.1 mm Diamond to produce polarised photons. These photons were then tagged with a resolution of 2 MeV using a spectrometer. The photons then impinged on a 4 He cryotarget. Two sets of detectors were used to detect the reaction products. PiP, a plastic scintillator hodoscope, was used to detect the positive pions; and TOF a time of flight array, was used to detect the neutrons. Data was analysed for unpolarised photon energy regions centred at E =260,300,340 and 380 MeV and two polarised regions centred at E =258 and 338 MeV. The unpolarised data is presented as double and triple differential cross sec tions while the polarised data is presented as photon asymmetries of the corres ponding double differential cross section. A comparison is made with Plane Wave Impulse Approximation (PWIA) calculations by Louis Wright, both with and without final state interaction corrections. It is concluded that for the unpolar ised data a more sophisticated treatment of the final state interactions is required while for the polarised data reasonable agreement is found between experiment and theory.
Book Synopsis Chiral Effective-field Theory in the Delta(1232) Region by :
Download or read book Chiral Effective-field Theory in the Delta(1232) Region written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a theoretical study of the radiative pion photoproduction on the nucleon ($\gamma N \rightarrow \pi N \gamma'$) in the $\De$-resonance region, with the aim to determine the magnetic dipole moment (MDM) of the $\Delta^+(1232)$. The study is done within the framework of chiral effective-field theory where the expansion is performed (to next-to-leading order) in the $\delta$ power-counting scheme which is an extension of chiral perturbation theory to the $\Delta$-resonance energy region. We present in detail the results for the absorptive part of the $\Delta$ MDM, as well as a sensitivity study for the radiative pion photoproduction observables on the real part of the $\Delta$ MDM. We find that an asymmetry for circular polarization of the photon beam may provide a model-independent way to measure the $\Delta$ MDM.
Book Synopsis A Study of Pion Photoproduction on Carbon-12 in the Delta Resonance Region by : John Alan MacKenzie
Download or read book A Study of Pion Photoproduction on Carbon-12 in the Delta Resonance Region written by John Alan MacKenzie and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards by :
Download or read book Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 2001 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theses on any subject submitted by the academic libraries in the UK and Ireland.
Book Synopsis Multi-nucleon Pion Absorption on Helium in the Delta Resonance Region by : Arthur O. Mateos
Download or read book Multi-nucleon Pion Absorption on Helium in the Delta Resonance Region written by Arthur O. Mateos and published by . This book was released on 1995 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Energy Physics Index written by and published by . This book was released on 1990 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Simultaneous Measurements of Positive Pion Photoproduction Cross Sections and Beam Asymmetries with Linearly Polarized Photons in the Delta-region by : Lino Miceli
Download or read book Simultaneous Measurements of Positive Pion Photoproduction Cross Sections and Beam Asymmetries with Linearly Polarized Photons in the Delta-region written by Lino Miceli and published by . This book was released on 2000 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1987 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Incoherent Pion Photoproduction on the Deuteron by : Eed M. Darwish
Download or read book Incoherent Pion Photoproduction on the Deuteron written by Eed M. Darwish and published by LAP Lambert Academic Publishing. This book was released on 2015-03-26 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Incoherent pion photoproduction on the deuteron is investigated with inclusion of all leading NN effects. Formal expressions for polarization observables are derived and described by various beam, target and beam-target asymmetries for polarized photons and/or oriented deuterons. Results are given for unpolarized cross sections and all possible polarization observables with polarized photons and/or oriented deuterons. The contributions to the spin asymmetry and the Gerasimov-Drell-Hearn (GDH) integral from separate channels are evaluated by explicit integration up to a photon lab-energy of 350 MeV. Effects of final-state interaction are investigated and their role in these observables are found to be significant, specially for neutral-pion production. The extracted results are compared with available experimental data and predictions of other works, and a satisfactory agreement is obtained. We expect that the results presented in this book may be useful to interpret the recent measurements from the high-intensity and high duty-factor electron accelerators MAMI, ELSA, Jefferson Lab, LEGS, MAX-Lab, SPring-8, LNS, and GRAAL."
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975-11 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoproduction of Pions on Polarized Protons and Neutrons in the Second Resonance Region by : Physikalisches Institut
Download or read book Photoproduction of Pions on Polarized Protons and Neutrons in the Second Resonance Region written by Physikalisches Institut and published by . This book was released on 1977 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Positive Pion Photoproduction on (10 Sup)B, (14 Sup)n and (16 Sup)o in the Delta Resonance Region by : Ping-Kun Teng
Download or read book Positive Pion Photoproduction on (10 Sup)B, (14 Sup)n and (16 Sup)o in the Delta Resonance Region written by Ping-Kun Teng and published by . This book was released on 1985 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pion Absorption by Helium Nucleus at Delta-resonance by : Sanjoy Mukhopadhyay
Download or read book Pion Absorption by Helium Nucleus at Delta-resonance written by Sanjoy Mukhopadhyay and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Asymmetries for Elastic Scattering of Charged Pions from Polarized Helium-3 at Delta Resonance Energies by : Michelle Anna Espy
Download or read book Asymmetries for Elastic Scattering of Charged Pions from Polarized Helium-3 at Delta Resonance Energies written by Michelle Anna Espy and published by . This book was released on 1996 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pion Photoproduction on Nucleons in a Covariant Hadron-exchange Model by :
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.
Book Synopsis Experimental study of compton scattering on protons and pion photoproduction by polarized photons by : Armen Vartapetian
Download or read book Experimental study of compton scattering on protons and pion photoproduction by polarized photons written by Armen Vartapetian and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photon-induced Emission of Pions and Protons from Various Nuclei in the -[delta]-resonance Region by : J. Arends
Download or read book Photon-induced Emission of Pions and Protons from Various Nuclei in the -[delta]-resonance Region written by J. Arends and published by . This book was released on 1990 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Photon-induced Emission of Pions and Protons from Various Nuclei in the -[delta]-resonance Region PDF Online Free](https://books.google.com/books/content/images/frontcover/Kb6utgAACAAJ?fife=w200-h370)
