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Psup 0 Meson Photoproduction Using Linearly Polarized Photons With The Clas Detector
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Book Synopsis P[sup 0] Meson Photoproduction Using Linearly Polarized Photons with the CLAS Detector by :
Download or read book P[sup 0] Meson Photoproduction Using Linearly Polarized Photons with the CLAS Detector written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The work presented in this thesis describes the first experimental measurement of the photon asymmetry of the exclusive [rvec [gamma]] [yields] [rho][sup 0]p [yields] [pi][sup +][pi][sup -]p reaction. The data were gathered during the summer of 2001 as a proof of principle study using a polarized beam of photons with the CLAS detector in Hall B of Jefferson Lab for the first time. The aim of the g8a set of experiments is to improve the understanding of the underlying symmetry of the quark degrees of freedom in the nucleon, the nature of the parity exchange between the incident photon and the target nucleon, the mechanism of associated strangeness production in electromagnetic reactions, and to search for evidence for the existence of the so called missing resonances. A beam of tagged and collimated linearly polarized photons (energy range 1.8-2.2 GeV) in conjunction with the large solid angle coverage of CLAS make possible the extraction of polarization observables for the photoproduction of vector mesons. For example, the azimuthal distribution of the [rho][sup 0] as a function of its polar angle in the ([rvec [gamma]], p) c.m. system enables the measurement of the photon asymmetry parameter, [Sigma]. This has been measured for [theta][sub c.m.] [le] 65[sup o], the results of which are compared with the prediction of the quark model of Zhao for the [omega] vector meson. It has been found that the tensor coupling for the [rho][sup 0] is quite different than that of the [omega]. The experimental technique of using a beam of linear polarized photons with the CLAS detector has been shown to be viable. By the end of the second phase of these experiments they expect to have a high quality data set which will allow the measurement of the spin density matrix elements for the [rho][sup 0] and provide evidence relating to the existence of the missing resonances.
Book Synopsis ?0 Meson Photoproduction Using Linearly Polarized Photons with the CLAS Detector by :
Download or read book ?0 Meson Photoproduction Using Linearly Polarized Photons with the CLAS Detector written by and published by . This book was released on 2004 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work presented in this thesis describes the first experimental measurement of the photon asymmetry of the exclusive $ ec{γ}$ → ?0p → ?+?-p reaction. The data were gathered during the summer of 2001 as a proof of principle study using a polarized beam of photons with the CLAS detector in Hall B of Jefferson Lab for the first time. The aim of the g8a set of experiments is to improve the understanding of the underlying symmetry of the quark degrees of freedom in the nucleon, the nature of the parity exchange between the incident photon and the target nucleon, the mechanism of associated strangeness production in electromagnetic reactions, and to search for evidence for the existence of the so called missing resonances. A beam of tagged and collimated linearly polarized photons (energy range 1.8-2.2 GeV) in conjunction with the large solid angle coverage of CLAS make possible the extraction of polarization observables for the photoproduction of vector mesons. For example, the azimuthal distribution of the ?0 as a function of its polar angle in the ($ ec{γ}$p) c.m. system enables the measurement of the photon asymmetry parameter, ?. This has been measured for ?c.m. ≤ 65°, the results of which are compared with the prediction of the quark model of Zhao for the ? vector meson. It has been found that the tensor coupling for the ?0 is quite different than that of the ?. The experimental technique of using a beam of linear polarized photons with the CLAS detector has been shown to be viable. By the end of the second phase of these experiments they expect to have a high quality data set which will allow the measurement of the spin density matrix elements for the ?0 and provide evidence relating to the existence of the missing resonances.
Book Synopsis P0 Photoproduction Using Linearly Polarised Photons with the CLAS Detector by : Christopher Ian Osyp Gordon
Download or read book P0 Photoproduction Using Linearly Polarised Photons with the CLAS Detector written by Christopher Ian Osyp Gordon and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoproduction of [rho]0 Mesons with Linearly Polarized Photons by : Robert Lee Loveless
Download or read book Photoproduction of [rho]0 Mesons with Linearly Polarized Photons written by Robert Lee Loveless and published by . This book was released on 1968 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Status of Meson Photoproduction Experiments with CLAS. by :
Download or read book Status of Meson Photoproduction Experiments with CLAS. written by and published by . This book was released on 2014 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: A large part of the experimental program in Hall B of the Jefferson Lab is dedicated to baryon spectroscopy. Meson photoproduction experiments are essential part of this program. CEBAF Large Acceptance Spectrometer (CLAS) and availability of circularly and linearly polarized tagged photon beams in combination with longitudinally and transversely polarized frozen spin targets provide unique conditions for this type of experiments. For the first time, a complete or nearly complete measurement became possible and will allow model independent extraction of the reaction amplitude. The measurements were complete with both proton and deuteron targets. An overview of the collected experimental data will be presented.
Book Synopsis Phi-Meson Photoproduction with Linearly Polarized Photons at Threshold Energies by :
Download or read book Phi-Meson Photoproduction with Linearly Polarized Photons at Threshold Energies written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The observables provided by linearly-polarized photons are of interest in delineating the contributions of the various hadronic processes giving rise to vector meson photoproduction. In particular, we describe how phi-meson production affords an incisive tool for exploring the nature of the parity exchange at threshold energies, the strangeness content of proton, as well as extracting signatures for the violation of Okubo-Zweig-Iizuka observation (OZI rule). Our goal is to study the gamma-vector p-->phip reaction, with phi-->K+K-, in the photon energy range of 1.7 to 2.1 GeV by using the Coherent Linear Bremsstrahlung Facility in Hall B of Jefferson Laboratory, Newport News, VA. The data were collected during the g8b run in the summer of 2005.
Book Synopsis Photoproduction of Phi Mesons with Linearly Polarized Photons by : Bernard Sandler
Download or read book Photoproduction of Phi Mesons with Linearly Polarized Photons written by Bernard Sandler and published by . This book was released on 1971 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Coherent Photoproduction of ¿-Mesons Off Protons at Threshold Energies by : Julian Salamanca
Download or read book Coherent Photoproduction of ¿-Mesons Off Protons at Threshold Energies written by Julian Salamanca and published by LAP Lambert Academic Publishing. This book was released on 2010-09 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Hadron Spectroscopy of Pseudoscalar and Vector Meson Photoproduction Using Linearly Polarised Photons at CLAS. by : Louise Clark
Download or read book Hadron Spectroscopy of Pseudoscalar and Vector Meson Photoproduction Using Linearly Polarised Photons at CLAS. written by Louise Clark and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoproduction of Neutral Rho Mesons with Linearly Polarized Photons by : Gene Elvin McClellan
Download or read book Photoproduction of Neutral Rho Mesons with Linearly Polarized Photons written by Gene Elvin McClellan and published by . This book was released on 1971 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoproduction of Mesons with Linearly Polarized Photons by : Frederick Cooper
Download or read book Photoproduction of Mesons with Linearly Polarized Photons written by Frederick Cooper and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoproduction of Phi Mesons with Linearly Polarized Photons by :
Download or read book Photoproduction of Phi Mesons with Linearly Polarized Photons written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We propose to measure the reaction gamma(vec) + p --> p + phi with phi --> K^+K^- in the photon energy range of 1.9
Book Synopsis Photoproduction of Pi-zero Mesons with Polarized Bremsstrahlung by : Darrell James Drickey
Download or read book Photoproduction of Pi-zero Mesons with Polarized Bremsstrahlung written by Darrell James Drickey and published by . This book was released on 1962 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book GlueX written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of the GlueX experiment \cite{gluex} is to provide crucial data to help understand the soft gluonic fields responsible for binding quarks in hadrons. Hybrid mesons, and in particular exotic hybrid mesons, provide the ideal laboratory for testing QCD in the confinement regime since these mesons explicitly manifest the gluonic degrees of freedom. Photoproduction is expected to be effective in producing exotic hybrids but there is little data on the photoproduction of light mesons. GlueX will use the new 12-GeV electron beam at Jefferson Lab to produce a 9-GeV beam of linearly polarized photons using the technique of coherent bremsstrahlung. A solenoid-based hermetic detector is under construction, which will be used to collect data on meson production and decays. These data will also be used to study the spectrum of conventional mesons, including the poorly understood excited vector mesons. This talk will give an update on the experiment as well as describe theoretical developments \cite{Dudek:2011bn} to help understand how these data can provide insights into the fundamental theory of strong interactions.
Download or read book CLAS+FROST written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A large part of the experimental program in Hall B of the Jefferson Lab is dedicated to baryon spectroscopy. Photoproduction experiments are essential part of this program. CEBAF Large Acceptance Spectrometer (CLAS) and availability of circularly and linearly polarized tagged photon beams provide unique conditions for this type of experiments. Recent addition of the Frozen Spin Target (FROST) gives a remarkable opportunity to measure double and triple polarization observables for different pseudo-scalar meson photoproduction processes. For the first time, a complete or nearly complete experiment becomes possible and will allow model independent extraction of the reaction amplitude. An overview of the experiment and its current status is presented.
Book Synopsis PHOTOPRODUCTION OF? MESONS IN A HYDROGEN BUBBLE CHAMBER BY 3 AND 5 GeV LINEARLY POLARIZED PHOTONS by :
Download or read book PHOTOPRODUCTION OF? MESONS IN A HYDROGEN BUBBLE CHAMBER BY 3 AND 5 GeV LINEARLY POLARIZED PHOTONS written by and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoproduction of [pi] -mesons in Hydrogen Fom Quasi-monochromatic and Linearly Polarized Photons at the First Resonance by :
Download or read book Photoproduction of [pi] -mesons in Hydrogen Fom Quasi-monochromatic and Linearly Polarized Photons at the First Resonance written by and published by . This book was released on 1963 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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