Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 10
Book Description
Photoproduction of Pi+ Mesons on Polarized Protons at Photon Energies Between 0.5 and 2.2 GeV
Author: Photoproduktion of Π+ messons on polarized protons at photon energies between 0,5 and 2,2 GeV
Author: Wilfried HoffmannCoherent Photoproduction of ¿-Mesons Off Protons at Threshold Energies
Author: Julian SalamancaPublisher: LAP Lambert Academic Publishing
ISBN: 9783843351393
Category :
Languages : en
Pages : 144
Book Description
Observables from vector meson photoproduction by linearly-polarized photons can be expressed in term of bilinear combinations of helicity amplitudes parameterized by the Spin Density Matrix Elements (SDMEs). These SDMEs give straightforward relations for understanding the nature of the parity exchange at threshold energies, as well as for extracting signatures of the Okubo-Zweig-Iizuka violation. Measurement of SDMEs for p p in the photon energy range of 1.7 to 1.9 GeV(momentum transfer squared t range of 1.2 to 0.25 GeV2 ) and 1.9 to 2.1 GeV (t range of 1.4 to 0.25 GeV2 ) from the g8b experimental data collected in the summer of 2005 in the Hall B of Jefferson Lab are reported herein.
Photoproduction of [pi Symbol] Mesons from a Polarized Proton Target at 5 and 16 GeV.
![Photoproduction of [pi Symbol] Mesons from a Polarized Proton Target at 5 and 16 GeV. PDF](https://books.google.com/books/content/images/frontcover/5VJuJQAACAAJ?fife=w80-h100)
Author: Charles Conover MorehousePublisher:
ISBN:
Category :
Languages : en
Pages : 107
Book Description
Nuclear Science Abstracts
Author: Study of Photoproduction of Vector Mesons on Deuterium by 5. 5 GeV Linearly Polarized Photons
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The experimental results of a deuterium bubble chamber photoproduction study of half a million pictures at 5.5 GeV are presented. This experiment has been performed using a monoenergetic and linearly polarized photon beam facility at SLAC. At 5.5 GeV the beam polarization is greater than 90%, and the average FWHM of the beam energy spectrum is 0.6 GeV. The reaction ..gamma..d ..-->.. ..pi ... pi..−d has been studied in detail. A clear sample of ..gamma..d ..-->.. rho°d channel was obtained and from the rho° decay distribution in terms of an extended density matrix which includes correlation with the beam polarization, nine independent density matrix parameters were determined. The study of rho° production and decay in the reaction channel ..gamma..d ..-->.. rho°d was found to proceed almost completely through natural parity exchanges; the contribution from unnatural parity exchanges being only (5.3 +- 4.5)% for momentum transfer absolute value t less than or equal to 0.25 GeV2. For the rho° mass and width, the values (766 +- 5) and (139 +- 11) MeV, respectively were obtained. The rho° production cross section in this channel has been determined to be (9.1 +- 0.8) ..mu..b.
Scientific and Technical Aerospace Reports
Author: Photoproduktion of P+ messons on polarized protons at photon energies between 0,5 and 2,2 GeV
Author: Wilfried HoffmannEnergy Research Abstracts
Author: ERDA Energy Research Abstracts
Author: United States. Energy Research and Development AdministrationPublisher:
ISBN:
Category : Medicine
Languages : en
Pages : 988
Book Description